Perennial herbaceous plant high-carbon sink dominant species screening method and related device

Abstract

The invention discloses a method and a related device for screening high-carbon sink dominant species of perennial herbaceous plants, and relates to the technical field of plant species screening, and the method comprises the following steps: obtaining perennial herbaceous plant data of a target region; determining a screening range of high-carbon sink dominant species according to the data of the perennial herbaceous plants; performing statistics on morphological characteristics and growth characteristics of each perennial herbaceous plant in the screening range of the high-carbon-sink dominant species, and determining screening indexes of the high-carbon-sink dominant species; according to a multiple linear regression analysis result, sorting the screening indexes from large to small according to the influence significance, and determining the screening indexes with obvious influence significance on the biomass of the perennial herbaceous plants; and screening the high-carbon sink dominant species according to the sequence of the significance of the influence of the screening indexes on the biomass from large to small, and determining the high-carbon sink dominant species of the target region. According to the method, the accuracy of screening the high-carbon sink dominant species of the perennial herbaceous plants can be effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of plant species screening, and in particular to a method and related device for screening perennial herbaceous plants with high carbon sink advantage. Background Art

[0002] In recent years, in terms of reducing carbon emissions and ecological carbon sequestration, many studies have been conducted on the effective biomass carbon accumulation of large trees and shrubs based on the carbon cycle principle of terrestrial ecosystems. The research results are mainly reflected in the comparison of carbon sequestration differences among different plant communities from a macro perspective, and most of the effective specific implementation methods also reflect carbon reduction from a macro perspective such as reducing hard pavement and low-carbon maintenance.

[0003] In practical applications, it is necessary to rationally plan and utilize urban green space, effectively screen high carbon sink plant species, and increase the ecological carbon sequestration function of urban green space ecosystems. In particular, herbaceous plants are the species with the largest contact area with the soil in urban green space ecosystems. Therefore, screening high carbon sink dominant species of perennial herbaceous plants commonly used in urban green space is of great significance for improving the ecological carbon sink of urban green space. However, the existing methods for screening high carbon sink dominant species of perennial herbaceous plants generally have low accuracy, and the screening results are inaccurate and unreliable.

[0004] Based on this, how to provide a more accurate method for screening perennial herbaceous plants with high carbon sinks and improve the accuracy of screening perennial herbaceous plants with high carbon sinks has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The purpose of this application is to provide a method and related device for screening perennial herbaceous plants with high carbon sinks, which can effectively improve the accuracy of screening perennial herbaceous plants with high carbon sinks.

[0006] To achieve the above objectives, this application provides the following solutions:

[0007] In a first aspect, the present application provides a method for screening perennial herbaceous plants with high carbon sinks, the method comprising:

[0008] Acquire perennial herbaceous plant data in the target area; the perennial herbaceous plant data include the names of all perennial herbaceous plants planted in local urban green spaces in the target area and the planting area data of urban green spaces;

[0009] According to the perennial herbaceous plant data, determine the screening range of high carbon sink dominant species; wherein, the high carbon sink dominant species refers to perennial herbaceous plants with a biomass per unit area greater than a certain biomass threshold, and the screening range of the high carbon sink dominant species includes all perennial herbaceous plants commonly used in local urban green spaces in the target area, and the commonly used means that the planting area of ​​the perennial herbaceous plants in the local urban green spaces is greater than the planting area threshold;

[0010] The morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species are counted to determine the screening indicators of high carbon sink dominant species; the morphological characteristics include plant height, deep root system, shallow root system, taproot system, fibrous root system, fleshy root, runner and rhizome; the growth characteristics include upright growth, clumping growth and creeping growth; the screening indicators include plant height, root system depth, rhizome morphology, growth mode and root system morphology;

[0011] Perform a multiple linear regression analysis on the biomass, morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high carbon sink dominant species, and rank the screening indicators of the high carbon sink dominant species from large to small according to the significance of the impact based on the multiple linear regression analysis results, and determine the screening indicators with significant impact on the biomass of perennial herbaceous plants;

[0012] The high carbon sink dominant species are screened in descending order according to the significance of the screening indicators on biomass, and the high carbon sink dominant species in the target area are determined.

[0013] Optionally, based on the screening range of the high-carbon sink dominant species, the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high-carbon sink dominant species are statistically analyzed to determine the screening indicators for the high-carbon sink dominant species. The morphological characteristic screening indicators include plant height, deep root system, shallow root system, runners, rhizomes, taproot system, fibrous root system and fleshy roots; the growth characteristic screening indicators include upright growth, clumping growth and creeping growth.

[0014] Optionally, the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species are counted to determine the screening indicators of high carbon sink dominant species, specifically including:

[0015] According to the average plant height of each perennial herb and the average plant height of all perennial herb within the screening range, perennial herb plants having an average plant height greater than the statistical average plant height of all perennial herb plants within the screening range are screened out;

[0016] According to the relationship between the influence of the root system depth on the biomass of the perennial herbaceous plants: deep root system> shallow root system, perennial herbaceous plants with deep root systems are selected;

[0017] According to the relationship of the influence of rhizome morphology on the biomass of the perennial herbaceous plants: rhizome>stolon, perennial herbaceous plants with rhizome are selected;

[0018] According to the relationship of the influence of the growth mode on the biomass of the perennial herbaceous plants: creeping growth>clumping growth>upright growth, the creeping growth and clumping growth perennial herbaceous plants are selected;

[0019] According to the relationship of the influence of root morphology on the biomass of the perennial herbaceous plants: fibrous root system> taproot system> fleshy root, perennial herbaceous plants with fibrous root system and taproot system are screened out.

[0020] Optionally, a multiple linear regression analysis is performed on the biomass, morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high carbon sink dominant species, and according to the multiple linear regression analysis results, the screening indicators of the high carbon sink dominant species are ranked from large to small according to the significance of the impact, and the screening indicators with significant impact on the biomass of perennial herbaceous plants are determined, specifically including:

[0021] Conducting a multiple linear regression analysis on the biomass, morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high carbon sink dominant species, and determining the screening indexes that have a significant impact on the biomass of the perennial herbaceous plants;

[0022] Based on the screening indicators with significant impact on the biomass of perennial herbaceous plants, the screening indicators were ranked in order from large to small according to the impact significance.

[0023] Optionally, the screening indicators that have a significant impact on the biomass of the perennial herb are plant height, root depth and rhizome morphology, and the screening indicators are ranked from large to small according to the significance of the impact as plant height > root depth > rhizome morphology > growth mode > root morphology.

[0024] Optionally, the high carbon sink dominant species are screened in descending order of the significance of the screening index on the biomass, and the high carbon sink dominant species in the target area are determined, specifically including:

[0025] Obtaining the maximum plant height, average plant height and minimum plant height data of all perennial herbaceous plants within the screening range of the high carbon sink dominant species, and calculating the average plant height of all perennial herbaceous plants within the screening range;

[0026] Screening high carbon sink dominant species according to the average plant height of each perennial herb and the average plant height of all perennial herb within the screening range to determine the high carbon sink dominant species in the target area;

[0027] Obtain root depth data of all perennial herbaceous plants within the range of the high carbon sink dominant species: deep root system, shallow root system;

[0028] Screen the dominant species of high carbon sinks according to the significant impact of deep root system > shallow root system, and determine the dominant species of high carbon sinks in the target area;

[0029] Obtain rhizome morphological data of all perennial herbaceous plants within the range of the high carbon sink species: runners, rhizomes;

[0030] Screening of high carbon sink dominant species based on the significant impact of rhizomes > stolons to determine the high carbon sink dominant species in the target area;

[0031] Obtain the growth pattern data of all perennial herbaceous plants within the range of the high carbon sink species: upright growth, clumping growth, creeping growth;

[0032] Screening of high carbon sink dominant species based on the significance of creeping growth > clumping growth > upright growth to determine the high carbon sink dominant species in the target area;

[0033] Obtain the root morphology data of all perennial herbaceous plants within the range of the high carbon sink dominant species: taproot system, fibrous root system, and fleshy root system;

[0034] The high carbon sink dominant species were screened according to the significant impact of fibrous root system > taproot system > fleshy root, and the high carbon sink dominant species in the target area were determined.

[0035] Optionally, according to the order of the significance of the screening indicators on biomass from large to small, plant height > root depth > rhizome morphology > growth mode > root morphology, the order of screening high carbon sink dominant species is screening plant height, screening root depth, screening rhizome morphology, screening growth mode and screening root morphology, thereby obtaining all high carbon sink dominant species in the target area.

[0036] In a second aspect, the present application provides a computer device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement any of the above-described methods for screening perennial herbaceous plants with high carbon sinks.

[0037] In a third aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described methods for screening perennial herbaceous plants as high carbon sink dominant species.

[0038] In a fourth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements any of the above-mentioned methods for screening perennial herbaceous plants with high carbon sink dominant species.

[0039] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0040] The present application provides a method and related devices for screening perennial herbaceous plants with high carbon sinks. Starting from screening indicators such as plant height, root depth, rhizome morphology, growth mode and root morphology, according to the differences in morphological characteristics and growth characteristics of perennial herbaceous plants, the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species are statistically analyzed to determine screening indicators such as plant height, root depth, rhizome morphology, growth mode and root morphology for screening high carbon sink dominant species. The screening indicators are sorted from large to small according to the significance of the impact through multiple linear regression analysis results to determine the screening indicators with significant impact on the biomass of perennial herbaceous plants. The high carbon sink dominant species are screened in the order of the significance of the screening indicators on the biomass from large to small, guiding the screening of high carbon sink dominant species from plant phenotypic trait indicators, and determining the high carbon sink dominant species in the target area, so that the high carbon sink dominant species can be accurately screened and determined from all perennial herbaceous plant species, which is more scientific, reasonable and accurate, and can effectively improve the accuracy of screening perennial herbaceous plants with high carbon sink dominant species, which is conducive to achieving carbon emission reduction and ecological carbon fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 This is a diagram of the application environment of a method for screening perennial herbaceous plants with high carbon sinks as an embodiment of the present application.

[0043] Figure 2 A schematic flow chart of a method for screening perennial herbaceous plants with high carbon sinks provided in one embodiment of the present application.

[0044] Figure 3 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] The method for screening perennial herbaceous plants with high carbon sinks provided in the embodiments of the present application can be applied to Figure 1 In the application environment shown. Among them, the terminal 102 communicates with the server 104 through the network. The data storage system can store the data that the server 104 needs to process. The data storage system can be set up separately, integrated on the server 104, or placed on the cloud or other servers. The terminal 102 can send the perennial herb data to the server 104. After the server 104 receives the perennial herb data, for the perennial herb data, the server 104 determines the screening range of high carbon sink dominant species according to the perennial herb data; the morphological characteristics and growth characteristics of each perennial herb within the screening range of high carbon sink dominant species are counted to determine the screening index of high carbon sink dominant species; according to the results of multiple linear regression analysis, the screening indexes are sorted from large to small according to the significance of the impact, and the screening index with obvious significant impact on the biomass of perennial herbaceous plants is determined; the high carbon sink dominant species are screened according to the order of the significance of the screening index on the biomass from large to small, and the high carbon sink dominant species in the target area are determined. The server 104 can feedback the obtained high carbon sink dominant species to the terminal 102. In addition, in some embodiments, the method for screening perennial herbaceous plant high carbon sink dominant species can also be implemented independently by the server 104 or the terminal 102. For example, the terminal 102 can directly screen the perennial herbaceous plant data for high carbon sink dominant species, or the server 104 can obtain the perennial herbaceous plant data from the data storage system and screen the perennial herbaceous plant data for high carbon sink dominant species.

[0048] The terminal 102 may be, but is not limited to, various desktop computers, laptop computers, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server 104 may be implemented as an independent server or a server cluster consisting of multiple servers, or may be a cloud server.

[0049] In an exemplary embodiment, Figure 2 As shown, a method for screening perennial herbaceous plants with high carbon sinks is provided. The method guides the screening of high carbon sinks from plant phenotypic traits through regression analysis results, which can effectively improve the accuracy of screening perennial herbaceous plants with high carbon sinks. The method is executed by a computer device, which can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server 104 in the example is used for explanation, and specifically includes the following steps.

[0050] Step S1, obtaining perennial herbaceous plant data in a target area.

[0051] In the present embodiment, perennial herbaceous plants generally refer to herbaceous plants that have lived for more than two years. The underground parts of some plants are perennial, such as perennial roots or organs such as rhizomes, bulbs, and tuberous roots, while the above-ground parts die every year, and new branches grow from the underground parts in the spring of the second year, bloom and bear fruit, such as echinacea, coreopsis, large-flowered okra, Viola yedoensis, and cycads; in addition, the above-ground and underground parts of some plants are perennial, and after flowering and bearing fruit, the above-ground parts are still not dead, and can bear fruit many times, such as ophiopogon japonicus, blue fescue, etc. Perennial herbaceous plants are herbaceous plants that can continue to grow without the need for renewal and reproduction all year round. They are generally perennial root and bulbous plants, such as cosmos, sage, iris, pennisetum, daylily, etc.

[0052] In this embodiment, the perennial herb data may include the names of all perennial herb plants planted in the local urban green space of the target area within a period of time and the planting area of ​​the urban green space, wherein the planting area of ​​the urban green space is used to determine whether the perennial herb plant is a perennial herb plant commonly used in the local urban green space of the target area. Commonly used here means that the planting area of ​​the perennial herb plant is greater than a preset planting area threshold. In this embodiment, the planting area threshold is set to 30hm. 2 , all perennial herbaceous plants commonly used in local urban green spaces in the target area are included in the screening objects of high-carbon sink dominant species, so that the screening scope of high-carbon sink dominant species can be determined.

[0053] In this embodiment, the perennial herbaceous plant data may also include basic information of perennial herbaceous plants, such as plant height information such as maximum plant height, general plant height, minimum plant height and average plant height, growth mode information such as upright growth, clump growth and creeping growth, root system morphology information such as deep root system, shallow root system, taproot system, fibrous root system, fleshy root system, rhizome morphology information such as runner, rhizome, etc. The above basic information is for the convenience of calculation in subsequent steps and screening of high carbon sink dominant species.

[0054] In this embodiment, urban green space includes green space and square land within urban construction land and regional green space outside urban construction land (reference standard CJJ / T 85-2017 Urban Green Space Classification Standard).

[0055] In this embodiment, the perennial herbaceous plants commonly used in urban green spaces refer to herbaceous plants that can grow for many years among urban ground cover plants.

[0056] 1) Ground cover plants: plants with dense clusters, low plant shape, can cover the ground, and have certain ornamental value. (Reference standard DB13 / T 1616-2012 Technical Specifications for the Establishment and Maintenance of Urban Ground Cover Plants).

[0057] 2) Herbaceous plants: A general term for five types of plants that are widely used in landscapes and have ornamental value, including annual and biennial herbaceous flowers, perennial herbaceous flowers, ornamental grasses, lawns and bamboo plants. (Reference standard DB6101 / T 3137-2022 Technical Specifications for Planting Herbaceous Plants in Urban Landscape Green Spaces).

[0058] Step S2: Determine the screening range of high carbon sink dominant species based on perennial herbaceous plant data.

[0059] In this embodiment, high carbon sink dominant species refer to perennial herbaceous plants with a biomass per unit area greater than a certain biomass threshold. The biomass threshold reflects the average level of biomass per unit area of ​​local perennial herbaceous plants. Perennial herbaceous plants with a biomass per unit area higher than the average level can be regarded as high carbon sink dominant species. The screening range of high carbon sink dominant species includes all perennial herbaceous plants commonly used in local urban green spaces in the target area. The purpose of this embodiment is to screen out high carbon sink dominant species that can efficiently absorb and store carbon dioxide from all perennial herbaceous plants commonly used in local urban green spaces in the target area.

[0060] Step S3: Count the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species to determine the screening index of high carbon sink dominant species.

[0061] In this embodiment, the morphological characteristic screening indicators include plant height, deep root system, shallow root system, runners, rhizomes, taproot system, fibrous root system and fleshy roots; the growth characteristic screening indicators include upright growth, clumping growth and creeping growth, and the screening indicators include plant height, root depth, rhizome morphology, growth mode and root morphology.

[0062] In this embodiment, step S3 counts the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species to determine the screening index of high carbon sink dominant species, which specifically includes the following steps:

[0063] Step S31: based on the screening range of high carbon sink dominant species, statistics are made on the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species.

[0064] Step S32: classify the screening indicators according to the morphological characteristics and the growth characteristics, and determine the screening indicators corresponding to the morphological characteristics and the screening indicators corresponding to the growth characteristics.

[0065] In this embodiment, step S32 classifies the screening indicators according to the morphological characteristics and the growth characteristics, and determines the screening indicators corresponding to the morphological characteristics and the screening indicators corresponding to the growth characteristics. The specific steps and screening indicator classification rules include:

[0066] Step S321, based on the average plant height of each perennial herb and the average plant height of all perennial herb in the screening range, screen out perennial herb whose average plant height is greater than the statistical average plant height of all perennial herb in the screening range.

[0067] Step S322 , based on the relationship between the influence of the root depth on the biomass of the perennial herbaceous plants: deep root system>shallow root system, perennial herbaceous plants with deep root systems are selected.

[0068] In this embodiment, biomass refers to the total amount of organic matter (dry weight) present in living trees at a certain moment, which is divided into aboveground biomass and underground biomass. Among them, aboveground biomass includes four components: wood, bark, branches (including fruits), and leaves (including flowers); underground biomass includes rhizomes, thick roots (diameter ≥ 10mm) and fine roots (2mm≤diameter<10mm). Fibrous roots with a diameter of less than 2mm are not included in the root biomass but are included in the soil organic matter content. (Reference standard LY / T2259-2014 Technical Regulations for Sample Collection of Standing Tree Biomass Modeling).

[0069] Step S323, according to the relationship between the influence of rhizome morphology on the biomass of the perennial herbaceous plants: rhizome>stolon, the perennial herbaceous plants with rhizomes are selected.

[0070] Step S324, according to the relationship of the influence of the growth mode on the biomass of the perennial herbaceous plants: creeping growth>clumping growth>upright growth, the creeping growth and clumping growth perennial herbaceous plants are screened out.

[0071] Step S325 , according to the relationship of the influence of root morphology on the biomass of the perennial herbaceous plants: fibrous root system> taproot system> fleshy root system, perennial herbaceous plants with fibrous root system and taproot system are selected.

[0072] Step S4: using a multiple linear regression analysis method, according to the multiple linear regression analysis results, the screening indicators are sorted from large to small according to the significance of the impact, and the screening indicators with obvious significance in affecting the biomass of perennial herbaceous plants are determined.

[0073] In this embodiment, step S4 adopts a multivariate linear regression analysis method. According to the results of the multivariate linear regression analysis, the screening indicators are sorted from large to small according to the significance of the impact, and the screening indicators with significant impact on the biomass of perennial herbaceous plants are determined, specifically including:

[0074] Step S41, performing a multiple linear regression analysis on the biomass, morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high carbon sink dominant species, and determining the screening index with significant influence on the biomass of the perennial herbaceous plants.

[0075] Step S42: Sort the screening indicators from large to small according to the significance of impact.

[0076] For example, the screening indicators that have a significant impact on the biomass of the perennial herb are plant height, root morphology and rhizome morphology; the order of the impact of the screening indicators on the biomass of the perennial herb is plant height > root depth > rhizome morphology > growth mode > root morphology.

[0077] Step S5: screening high carbon sink dominant species according to the order of the influence of the screening index on biomass from large to small, and determining the high carbon sink dominant species in the target area.

[0078] In this embodiment, taking plant height as an example, when the screening index with the most obvious impact significance is plant height, step S5 screens all perennial herbaceous plants within the screening range of high carbon sink dominant species according to the order of plant height, root depth and rhizome morphology in terms of the impact significance. The first step is to screen plants with plant height that meets the target requirements, and then the second step is to screen deep root systems and shallow root systems. The third step is to screen rhizome morphology such as runners and rhizomes. The fourth step is to screen growth modes: upright growth, clump growth, and creeping growth. The fifth step is to screen taproot systems, fibrous root systems, and fleshy roots. Finally, the high carbon sink dominant species in the target area are determined, which specifically includes the following steps:

[0079] Step S51, obtaining the maximum plant height, average plant height and minimum plant height data of all perennial herbaceous plants within the screening range of high carbon sink dominant species, and calculating the average plant height of all perennial herbaceous plants within the screening range.

[0080] Step S511, screening high carbon sink dominant species according to the average plant height of each perennial herb and the average plant height of all perennial herb in the screening range, to determine the high carbon sink dominant species in the target area.

[0081] Step S512: screening high carbon sink dominant species based on the average plant height of each perennial herb and the average plant height of all perennial herb in the screening range; for example, perennial herb whose average plant height is greater than the average plant height of all perennial herb in the screening range is regarded as high carbon sink dominant species, and perennial herb whose average plant height is less than the average plant height of all perennial herb in the screening range is regarded as non-high carbon sink dominant species, thereby determining high carbon sink dominant species in the target area.

[0082] Step S52, after completing the screening results of step S51, based on the relationship between the influence of the root depth on the biomass of the perennial herbaceous plants: deep root system> shallow root system, screen out the perennial herbaceous plants with deep root systems.

[0083] Step S53, after completing the screening results of step S52, according to the relationship of the influence of rhizome morphology on the biomass of the perennial herbaceous plants: rhizome>stolon, the perennial herbaceous plants with rhizomes are screened out.

[0084] Step S54, after completing the screening results of step S53, the perennial herbaceous plants with creeping growth and clumping growth are screened out according to the relationship of the influence of the growth mode on the biomass of the perennial herbaceous plants: creeping growth> clumping growth> upright growth.

[0085] Step S55, after completing the screening results of step S54, according to the relationship of the influence of root morphology on the biomass of the perennial herbaceous plants: fibrous root system > taproot system > fleshy root, screen out perennial herbaceous plants with fibrous root system and taproot system, and finally determine the high carbon sink dominant species in the target area.

[0086] In other embodiments, when the indexes with obvious influence on biomass are root depth, rhizome morphology, growth mode and root morphology, screening can be performed according to the screening index classification rules in step S32. For example, when the screening index with the greatest influence is root depth, perennial herbaceous plants with deep roots can be screened out as high-carbon sink dominant species. When the screening index with the greatest influence is rhizome morphology, perennial herbaceous plants with rhizomes can be screened out as high-carbon sink dominant species. When the screening index with the greatest influence is growth mode, perennial herbaceous plants with creeping growth and clumping growth can be screened out as high-carbon sink dominant species. When the screening index with the greatest influence is root morphology, perennial herbaceous plants with fibrous root system and taproot system can be screened out as high-carbon sink dominant species.

[0087] This embodiment starts from the screening indicators such as plant height, root depth, rhizome morphology, growth mode and root morphology, and aims at the differences in morphological characteristics and growth characteristics of perennial herbaceous plants. By statistically analyzing the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species, the screening indicators such as plant height, root depth, rhizome morphology, growth mode and root morphology are determined for screening high carbon sink dominant species. According to the results of multiple linear regression analysis, the screening indicators are sorted from large to small according to the trend of significant impact, and the screening indicators that affect the biomass of perennial herbaceous plants are determined. Then, the high carbon sink dominant species are screened according to the order of the significant impact of the screening indicators on the biomass from large to small, and the high carbon sink dominant species are screened from the plant phenotypic trait indicators to guide the screening of high carbon sink dominant species and determine the high carbon sink dominant species in the target area. Therefore, high carbon sink dominant species can be accurately screened and determined from all perennial herbaceous plant species, which is more scientific, reasonable and accurate, and can effectively improve the accuracy of screening high carbon sink dominant species of perennial herbaceous plants, which is conducive to achieving carbon emission reduction and ecological carbon fixation.

[0088] In order to make the technical solution of this embodiment clearer, the specific implementation process of the technical solution of this embodiment is described in detail below in the form of examples, which mainly include the following implementation steps.

[0089] (1) Obtain data on perennial herbaceous plants in the target area and select perennial herbaceous plants commonly used in local urban green spaces in the target area as the screening range for high carbon sink dominant species.

[0090] The target area of ​​this embodiment is the Hutuo River Ecological Zone in Shijiazhuang City, Hebei Province, where commonly used perennial herbaceous plants include coreopsis, echinacea, galea, sunflower, daylily, iris, iris, Viola yedoensis, Duchesnea indica, Trifolium repens, Lotus japonicum, Gramineus spathulata, Stipa grass, Pseudo-dragon head, Cynodon dactylon, Poa annua, Sage and Lythrum salicaria, etc. The planting area of ​​each perennial herbaceous plant in the urban green space of Shijiazhuang City is greater than 30 hm2. 2 .

[0091] (2) Statistically analyze the morphological and growth characteristics of perennial herbaceous plants commonly used in local urban green spaces, and determine the screening indicators for high carbon sink dominant species, thereby obtaining the screening indicators for high carbon sink dominant species.

[0092] According to Table 1, the morphological characteristics and growth characteristics of perennial herbaceous plants commonly used in local urban green spaces are counted. As shown in Table 1, the morphological characteristics mainly include plant height, deep root system, shallow root system, runners, rhizomes, taproot system, and fibrous root system; the growth characteristics mainly include growth mode (upright growth, clumping growth, creeping growth).

[0093] Table 1 Statistical table of characteristics of perennial herbaceous plants commonly used in local urban green spaces

[0094]

[0095]

[0096]

[0097] In this embodiment, the screening index classification includes the following contents:

[0098] (2-1) According to the plant height screening index, perennial herbaceous plants whose average plant height is greater than the statistical average plant height of all perennial herbaceous plants within the screening range are screened out, that is, perennial herbaceous plants whose average plant height is greater than the statistical average plant height of all perennial herbaceous plants within the screening range are selected as high carbon sink dominant species.

[0099] Determine the average plant height of perennial herbaceous plants commonly used in local urban green spaces that need to be counted.

[0100] For the perennial herbaceous plants that need to be counted, the maximum plant height, general plant height and minimum plant height of each perennial herbaceous plant variety in the planting plot are first measured, and then the average plant height of each perennial herbaceous plant variety is calculated based on these three values, as shown in Table 2.

[0101] Table 2 Statistics of plant height of perennial herbaceous plants in local urban green spaces

[0102]

[0103] After step (2-1) is completed, the high carbon sink dominant species obtained by screening are shown in Table 3.

[0104] Table 3 Plant height index screening

[0105]

[0106] (2-2) After completing the screening in (2-1), the perennial herbaceous plants with deep root systems are screened out based on the relationship of the significance of the effect of root morphology on the biomass of the perennial herbaceous plants: deep root system > shallow root system.

[0107] If there are no deep-rooted plant varieties during the process of completing step (2-2), proceed directly to the next screening step (2-3).

[0108] After step (2-2) is completed, the high carbon sink dominant species obtained by screening are shown in Table 4.

[0109] Table 4 Root depth index screening

[0110]

[0111] (2-3) After completing the screening in (2-2), the perennial herbaceous plants with rhizomes are screened out according to the relationship of the significance of the effect of rhizome morphology on the biomass of the perennial herbaceous plants: rhizome>stolon.

[0112] If there are no rhizome plant varieties during the process of completing step (2-3), then directly proceed to the next step of screening (2-4).

[0113] After completing steps (2-3), the high carbon sink dominant species obtained by screening are shown in Table 5.

[0114] Table 5 Screening of rhizome morphological indicators

[0115]

[0116] (2-4) After completing the screening in (2-3), the perennial herbaceous plants with creeping growth and clumping growth are screened out according to the relationship of the significance of the growth mode on the biomass of the perennial herbaceous plants: creeping growth > clumping growth > upright growth, and finally the high carbon sink dominant species in the target area are determined.

[0117] If there are no creeping or clumping plant varieties during the process of completing step (2-4), then directly proceed to the next step of screening (2-5).

[0118] After completing steps (2-4), the high carbon sink dominant species screened are shown in Table 6.

[0119] Table 6 Screening of dominant species with high carbon sinks

[0120]

[0121] (2-5) After completing the screening in (2-4), the perennial herbaceous plants with fibrous root systems are screened out according to the relationship of the influence of the root morphology on the biomass of the perennial herbaceous plants: fibrous root system > taproot system > fleshy root system.

[0122] If further screening is not possible during step (2-5), the screening result after step (2-4) will be the final screening result.

[0123] (3) Identify the dominant species with high carbon sinks.

[0124] Finally, Glehnia littoralis was screened out as the perennial high carbon sink dominant species.

[0125] The determination of the sequence of steps for the above-mentioned screening indicators is based on the scientific research project "Research and Application of Carbon Sink Optimization Technology of Urban Ground Cover Plant Combinations". A multivariate linear regression analysis was conducted on the biomass, morphological characteristics and growth characteristics of 20 perennial herbaceous plants in the Hutuo River Ecological Zone of Shijiazhuang City. The trend of the results showed that the trend of the influence of each screening indicator on biomass was as follows: plant height > root depth > rhizome morphology > growth mode > root morphology.

[0126] After completing steps (1-4), the dominant species of local urban perennial herbaceous plants with high carbon sinks are obtained.

[0127] In this embodiment, perennial herbs commonly used in local urban green spaces are first selected as the screening range of high carbon sink dominant species; then the morphological characteristics and growth characteristics of perennial herbs commonly used in local urban green spaces are counted to determine the screening indicators of high carbon sink dominant species; the screening indicators such as plant height, root depth, rhizome morphology, growth mode and root morphology are determined for screening high carbon sink dominant species, and according to the results of multiple linear regression analysis, the screening indicators are sorted from large to small according to the trend of significant impact, and the screening indicators that affect the biomass of perennial herbs are determined, and then the high carbon sink dominant species are screened according to the order of the significance of the screening indicators on the biomass from large to small, and the high carbon sink dominant species are screened from the plant phenotypic trait indicators to guide the screening of high carbon sink dominant species, and the high carbon sink dominant species in the target area are determined. Thus, high carbon sink dominant species can be accurately screened and determined from all perennial herbaceous plant species, which is more scientific, reasonable and accurate. By artificially selecting and matching the perennial herbaceous plant varieties commonly used in local urban green spaces in the target area and planting them in combination, the ecological carbon fixation function of urban green spaces can be effectively improved. Furthermore, the screening index parameters used in this embodiment are simple and easy to obtain, which facilitates the screening of high carbon sink dominant species.

[0128] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 3As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store perennial herbaceous plant data. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for screening perennial herbaceous plants with high carbon sinks is implemented.

[0129] Those skilled in the art will understand that Figure 3 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0130] In an exemplary embodiment, a computer device is also provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the above-mentioned method for screening perennial herbaceous plants with high carbon sinks is implemented.

[0131] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, which, when executed by a processor, implements the above-mentioned method for screening perennial herbaceous plants with high carbon sinks.

[0132] In an exemplary embodiment, a computer program product is provided, including a computer program, which, when executed by a processor, implements the above-mentioned method for screening perennial herbaceous plants with high carbon sinks.

[0133] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0134] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for screening perennial herbaceous plants with high carbon sinks, characterized in that: The method for screening perennial herbaceous plants with high carbon sink dominant species comprises: Acquire perennial herbaceous plant data in the target area; the perennial herbaceous plant data include the names of all perennial herbaceous plants planted in local urban green spaces in the target area and the planting area data of urban green spaces; According to the perennial herbaceous plant data, determine the screening range of high carbon sink dominant species; wherein, the high carbon sink dominant species refers to perennial herbaceous plants with a biomass per unit area greater than a certain biomass threshold, and the screening range of the high carbon sink dominant species includes all perennial herbaceous plants commonly used in local urban green spaces in the target area, and the commonly used means that the planting area of ​​the perennial herbaceous plants in the local urban green spaces is greater than the planting area threshold; The morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species are counted to determine the screening indicators of high carbon sink dominant species; the morphological characteristics include plant height, deep root system, shallow root system, taproot system, fibrous root system, fleshy root, runner and rhizome; the growth characteristics include upright growth, clumping growth and creeping growth; the screening indicators include plant height, root system depth, rhizome morphology, growth mode and root system morphology; Perform a multiple linear regression analysis on the biomass, morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high carbon sink dominant species, and rank the screening indicators of the high carbon sink dominant species from large to small according to the significance of the impact based on the multiple linear regression analysis results, and determine the screening indicators with significant impact on the biomass of perennial herbaceous plants; The high carbon sink dominant species are screened in descending order according to the significance of the screening indicators on biomass, and the high carbon sink dominant species in the target area are determined.

2. The method for screening perennial herbaceous plants with high carbon sinks according to claim 1, characterized in that: Based on the screening scope of the high-carbon sink dominant species, the morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening scope of the high-carbon sink dominant species are counted to determine the screening indicators of the high-carbon sink dominant species. The morphological characteristic screening indicators include plant height, deep root system, shallow root system, runners, rhizomes, taproot system, fibrous root system and fleshy roots; the growth characteristic screening indicators include upright growth, clumping growth and creeping growth.

3. The method for screening perennial herbaceous plants with high carbon sinks according to claim 2, characterized in that: The morphological and growth characteristics of each perennial herbaceous plant within the screening range of high carbon sink dominant species are counted to determine the screening indicators of high carbon sink dominant species, including: According to the average plant height of each perennial herb and the average plant height of all perennial herb within the screening range, perennial herb plants having an average plant height greater than the statistical average plant height of all perennial herb plants within the screening range are screened out; According to the relationship between the influence of the root system depth on the biomass of the perennial herbaceous plants: deep root system> shallow root system, perennial herbaceous plants with deep root systems are selected; According to the relationship of the influence of rhizome morphology on the biomass of the perennial herbaceous plants: rhizome>stolon, perennial herbaceous plants with rhizome are selected; According to the relationship of the influence of the growth mode on the biomass of the perennial herbaceous plants: creeping growth>clumping growth>upright growth, the creeping growth and clumping growth perennial herbaceous plants are selected; According to the relationship of the influence of root morphology on the biomass of the perennial herbaceous plants: fibrous root system> taproot system> fleshy root, perennial herbaceous plants with fibrous root system and taproot system are screened out.

4. The method for screening perennial herbaceous plants with high carbon sinks according to claim 3, characterized in that: A multiple linear regression analysis was performed on the biomass, morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high carbon sink dominant species. According to the results of the multiple linear regression analysis, the screening indicators of the high carbon sink dominant species were ranked from large to small according to the significance of the impact, and the screening indicators with significant impact on the biomass of perennial herbaceous plants were determined, including: Conducting a multiple linear regression analysis on the biomass, morphological characteristics and growth characteristics of each perennial herbaceous plant within the screening range of the high carbon sink dominant species, and determining the screening indexes that have a significant impact on the biomass of the perennial herbaceous plants; Based on the screening indicators with significant impact on the biomass of perennial herbaceous plants, the screening indicators were ranked in order from large to small according to the impact significance.

5. The method for screening perennial herbaceous plants with high carbon sinks according to claim 4, characterized in that: The screening indicators that have a significant impact on the biomass of the perennial herb are plant height, root depth and rhizome morphology. The screening indicators are ranked from large to small based on the significance of the impact as plant height > root depth > rhizome morphology > growth mode > root morphology.

6. The method for screening perennial herbaceous plants with high carbon sinks according to claim 5, characterized in that: The high carbon sink dominant species are screened in descending order according to the significance of the screening indicators on biomass, and the high carbon sink dominant species in the target area are determined, including: Obtaining the maximum plant height, average plant height and minimum plant height data of all perennial herbaceous plants within the screening range of the high carbon sink dominant species, and calculating the average plant height of all perennial herbaceous plants within the screening range; Screening high carbon sink dominant species according to the average plant height of each perennial herb and the average plant height of all perennial herb within the screening range to determine the high carbon sink dominant species in the target area; Obtain root depth data of all perennial herbaceous plants within the range of the high carbon sink dominant species: deep root system, shallow root system; Screen the dominant species of high carbon sinks according to the significant impact of deep root system > shallow root system, and determine the dominant species of high carbon sinks in the target area; Obtain rhizome morphological data of all perennial herbaceous plants within the range of the high carbon sink species: runners, rhizomes; Screening of high carbon sink dominant species based on the significant impact of rhizomes > stolons to determine the high carbon sink dominant species in the target area; Obtain the growth pattern data of all perennial herbaceous plants within the range of the high carbon sink species: upright growth, clumping growth, creeping growth; Screening of high carbon sink dominant species based on the significance of creeping growth > clumping growth > upright growth to determine the high carbon sink dominant species in the target area; Obtain the root morphology data of all perennial herbaceous plants within the range of the high carbon sink dominant species: taproot system, fibrous root system, and fleshy root system; The high carbon sink dominant species were screened according to the significant impact of fibrous root system > taproot system > fleshy root, and the high carbon sink dominant species in the target area were determined.

7. The method for screening perennial herbaceous plants with high carbon sinks according to claim 6, characterized in that: According to the order of the significance of the screening indicators on biomass from large to small, plant height > root depth > rhizome morphology > growth mode > root morphology, the order of screening high carbon sink dominant species is screening plant height, screening root depth, screening rhizome morphology, screening growth mode and screening root morphology, thereby obtaining all high carbon sink dominant species in the target area.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for screening perennial herbaceous plants with high carbon sink advantages as described in any one of claims 1 to 7.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for screening perennial herbaceous plant high carbon sink dominant species described in any one of claims 1 to 7 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for screening perennial herbaceous plant high carbon sink dominant species described in any one of claims 1 to 7 is implemented.

Images