A comprehensive evaluation method for vegetation restoration capacity of uninhabited islands

Abstract

The present invention discloses a comprehensive evaluation method for the vegetation restoration capacity of an uninhabited island, comprising the following steps: S1: obtaining vegetation growth data and environmental data on the island to obtain a vegetation growth effective value and an island environmental fluctuation value; S2: processing the plant growth effective value and the island environmental fluctuation value to obtain an island vegetation restoration energy efficiency base; S3: comparing the island vegetation restoration energy efficiency base with a preset island vegetation restoration energy efficiency base threshold to identify the island vegetation restoration capacity; the present invention combines the precipitation and light intensity of the island during the vegetation restoration period, and then forward processes the precipitation and light intensity with the island environmental fluctuation value and the vegetation growth effective value to obtain the island vegetation restoration energy efficiency base, that is, taking into account climate factors, environmental factors after vegetation restoration, and coverage factors after vegetation restoration, so as to make the evaluation of the island vegetation restoration capacity more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of ecological engineering assessment, and in particular to a comprehensive evaluation method for vegetation restoration capacity of uninhabited islands. Background Art

[0002] Strong winds can accelerate the evaporation of water from plants, causing serious impacts on plant growth, especially on the windward side of the island after strong winter winds and drought seasons. This often causes the upper part of the plant and the windward side branches and leaves to dry up, forming the common dwarf and flag-shaped trees. In severe cases, the entire plant dries up.

[0003] In order to alleviate ecological and environmental problems such as vegetation browning, soil erosion, and a sharp decline in biodiversity, island vegetation restoration is crucial. As a link between land and atmosphere, vegetation plays a key role in carbon sinks, soil and water conservation, and energy exchange. The restoration of degraded ecosystems is usually characterized by the restoration of vegetation functions and the improvement of their structures.

[0004] Considering that the self-repair capacity of vegetation is the ability of a vegetation ecosystem to return to its original stable state after being disturbed, the effect of island vegetation growth has become an important part of the evaluation of the effectiveness of island vegetation restoration capacity. Summary of the invention

[0005] The purpose of the present invention is to provide a comprehensive evaluation method for the vegetation restoration capacity of uninhabited islands. By combining the precipitation and light intensity of the island during the vegetation restoration period, and then forward processing the precipitation and light intensity with the island environmental anomaly value and the effective value of vegetation growth, the island vegetation restoration energy efficiency base is obtained, so that the island vegetation restoration energy efficiency base can identify the island vegetation restoration process from multiple dimensions, that is, taking into account climate factors, environmental factors after vegetation restoration, and coverage factors after vegetation restoration, so as to make the evaluation of the island vegetation restoration capacity more accurate.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A comprehensive evaluation method for vegetation restoration capacity of uninhabited islands comprises the following steps:

[0008] S1: Obtain vegetation growth data and environmental data on the island, and obtain the effective value of vegetation growth and the island environmental change value;

[0009] S2: Process the effective value of plant growth and the island environmental change value to obtain the energy efficiency base of island vegetation restoration;

[0010] S3: Compare the island vegetation restoration energy efficiency base with the preset island vegetation restoration energy efficiency base threshold to identify the island vegetation restoration capacity.

[0011] As a further solution of the present invention: in S1, the vegetation growth data includes vegetation coverage data, vegetation growth rate data and island soil erosion data;

[0012] Vegetation coverage data is the difference between the plant coverage area after island vegetation restoration and the plant coverage area before island vegetation restoration;

[0013] The vegetation growth rate data is the product of the vegetation area expansion rate and the vegetation growth height after island vegetation restoration;

[0014] The island soil erosion data is the difference between the soil erosion data before and after island plant restoration.

[0015] As a further solution of the present invention: the process of obtaining the effective value of vegetation growth is:

[0016] Mark the vegetation cover data as Z1;

[0017] The vegetation growth rate data is labeled as Z2;

[0018] The island soil erosion data is marked as Z3;

[0019] By formula The effective value Z of vegetation growth is obtained, where γ is a preset proportional coefficient and γ>0.

[0020] As a further solution of the present invention: the island environment data includes island temperature data, island humidity data and island soil data.

[0021] As a further solution of the present invention: the process of obtaining the island environment change value is as follows:

[0022] Label the island temperature data as W1;

[0023] Label the island humidity data as W2;

[0024] Label the island soil data as W3;

[0025] By formula The island environment change value W is calculated, where d1, d2 and d3 are preset proportional coefficients, and d1, d2 and d3 are all greater than 0.

[0026] As a further solution of the present invention: In S2, the process of obtaining the energy efficiency base of island vegetation restoration includes:

[0027] The effective value of vegetation growth is marked as Z, and the island environment change value is marked as W;

[0028] The energy efficiency base ZBX of island vegetation restoration is calculated by the formula ZBX=Fi·(Z+W), where Fi is the positive restoration factor.

[0029] As a further solution of the present invention: the positive repair factor Fi is obtained by weighting the precipitation during the vegetation restoration of the island by the light intensity during the vegetation restoration of the island.

[0030] As a further solution of the present invention: in S3, the first threshold of the preset energy efficiency base number for island vegetation restoration is ZBX1, and the second threshold of the energy efficiency base number for island vegetation restoration is ZBX2, where ZBX1 < ZBX2;

[0031] Compare the energy efficiency base number of island vegetation restoration with the first threshold and the second threshold of the energy efficiency base number of island vegetation restoration, so as to identify the island vegetation restoration ability.

[0032] As a further solution of the present invention: when ZBX < ZBX1, the comprehensive evaluation of the island vegetation restoration ability is poor;

[0033] When ZBX1 < ZBX < ZBX2, the comprehensive evaluation of the island vegetation restoration ability is good;

[0034] When ZBX > ZBX2, the comprehensive evaluation of the island vegetation restoration ability is excellent.

[0035] A comprehensive evaluation system for the vegetation restoration ability of uninhabited islands, comprising:

[0036] A data acquisition module, which is used to acquire the vegetation growth data and environmental data in the island, obtain the effective value of vegetation growth and the abnormal value of the island environment, and transmit the effective value of vegetation growth and the abnormal value of the island environment to the server;

[0037] A data analysis module, which receives the effective value of vegetation growth and the abnormal value of the island environment transmitted by the server. The data analysis module processes the effective value of plant growth and the abnormal value of the island environment to obtain the energy efficiency base number of island vegetation restoration, and transmits the energy efficiency base number of island vegetation restoration to the server;

[0038] An evaluation and identification module, which acquires the energy efficiency base number of island vegetation restoration transmitted by the server. The evaluation and identification module compares the energy efficiency base number of island vegetation restoration with the preset threshold of the energy efficiency base number of island vegetation restoration to identify the island vegetation restoration ability.

[0039] The beneficial effects of the present invention:

[0040] (1) The present invention processes island vegetation coverage data, plant growth rate data and island soil erosion data, that is, obtains the effective value of vegetation growth through the vegetation coverage area, vegetation growth rate and island soil erosion after the island is restored, that is, the larger the vegetation coverage area after restoration, the faster the vegetation growth rate and the smaller the island soil erosion, the better the island vegetation restoration effect is, and the larger the effective value of vegetation growth is. At the same time, by monitoring the island temperature data, island humidity data and island soil data, that is, monitoring the island temperature data, island humidity data and island soil data, when the island temperature data is close to 25°C, the larger the island humidity data and island soil data are, the better the island vegetation growth environment is, and the larger the island environment anomaly value is. That is, the island environment anomaly value and the effective value of vegetation growth are used to effectively characterize the environment and vegetation after the island restoration, so that the state data after the island vegetation restoration is more real and reliable;

[0041] (2) The present invention combines the precipitation and light intensity of the island during the vegetation restoration period, and then positively processes the precipitation and light intensity with the island environmental variation value and the effective value of vegetation growth to obtain the island vegetation restoration energy efficiency base, so that the island vegetation restoration energy efficiency base can identify the island vegetation restoration process from multiple dimensions, that is, taking into account climate factors, environmental factors after vegetation restoration, and coverage factors after vegetation restoration, so as to make the assessment of the island vegetation restoration capacity more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] Figure 1 is a flow chart of the present invention;

[0044] Figure 2 It is a flowchart of the present invention. DETAILED DESCRIPTION

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

[0046] Example 1

[0047] See also Figure 1 As shown, the present invention is a comprehensive evaluation method for vegetation restoration capacity of uninhabited islands, comprising the following steps:

[0048] Step 1: Obtain vegetation growth data and environmental data on the island to obtain the effective value of vegetation growth and the island environmental change value;

[0049] Step 2: Process the effective value of plant growth and the island environmental change value to obtain the energy efficiency base of island vegetation restoration;

[0050] Step 3: Compare the island vegetation restoration energy efficiency base with the preset island vegetation restoration energy efficiency base threshold to identify the island vegetation restoration capacity.

[0051] In step 1, the vegetation growth data includes vegetation coverage data, vegetation growth rate data and island soil erosion data;

[0052] Among them, the vegetation coverage data is the difference between the plant coverage area after the island vegetation restoration and the plant coverage area before the island vegetation restoration;

[0053] The plant coverage area after island vegetation restoration is marked as Zq;

[0054] The plant coverage area before island vegetation restoration is marked as Zh;

[0055] The vegetation coverage data Z1 is calculated by the formula Z1=k*(Zq-Zh), where K is the preset correction coefficient and the value of k is 1.3526;

[0056] Vegetation cover was measured using remote sensing technology;

[0057] The vegetation growth rate data is the product of the vegetation area expansion rate and the vegetation growth height after island vegetation restoration;

[0058] Among them, the vegetation area expansion rate is the ratio of vegetation coverage data to island vegetation restoration time, and the vegetation area expansion rate is marked as Zs;

[0059] The vegetation growth height is the ratio of the difference between the plant height after island vegetation restoration and the plant height before island vegetation restoration to the restoration time, and the vegetation growth height is marked as Zd;

[0060] In a specific embodiment, the process of obtaining the difference between the plant height after the island vegetation restoration and the plant height before the island vegetation restoration is to take multiple vegetation experimental coverage areas, each of which has an area of ​​1 mu, measure the plant height in the vegetation experimental coverage area once before the island vegetation restoration, and measure the plant height in the vegetation experimental coverage area twice after the island vegetation restoration, calculate the difference between the secondary measurement result and the primary measurement result to obtain the height difference of the vegetation experimental coverage area after the vegetation is restored, and take the average of the height differences of all vegetation experimental coverage areas to obtain the difference between the plant height after the island vegetation restoration and the plant height before the island vegetation restoration;

[0061] The vegetation growth rate data Z2 is calculated by the formula Z2 = Zs*Zd;

[0062] The island soil erosion data is the difference between the soil erosion data before and after island plantation restoration;

[0063] The soil erosion data is calculated by the formula Zst = KSLA*C*P, where KSLA is the soil erosion rate per square kilometer per hour, C is the soil moisture correction factor, and P is the surface coverage per square kilometer;

[0064] The soil and water loss data before island plantation restoration Zst1 and the soil and water loss data after island plantation restoration Zst2 are obtained by the above formula for calculating soil and water loss data;

[0065] The soil and water loss data Z3 is calculated by the formula Z3 = Zst1-Zst2;

[0066] By formula The effective value Z of vegetation growth is obtained, where γ is a preset proportional coefficient and γ>0.

[0067] Island environmental data include island temperature data, island humidity data and island soil data;

[0068] Among them, the island temperature data, island humidity data and island soil data are all the current time data of the island after vegetation restoration;

[0069] The island temperature data is obtained through temperature sensor monitoring, and the island temperature data is marked as W1;

[0070] The island humidity data is obtained through monitoring by humidity sensors and is marked as W2;

[0071] The island soil data was obtained by the “Gravimetric method for determination of soil dry matter and moisture” HJ613-2011, and the island soil data was marked as W3;

[0072] By formula The island environment change value W is calculated, where d1, d2 and d3 are preset proportional coefficients, and d1, d2 and d3 are all greater than 0.

[0073] In step 2, the process of obtaining the energy efficiency base of island vegetation restoration includes:

[0074] The energy efficiency base of island vegetation restoration ZBX is calculated by the formula ZBX = Fi·(Z+W), where Fi is the positive restoration factor;

[0075] Among them, the process of obtaining the positive repair factor is:

[0076] Obtain the precipitation of the island during the vegetation restoration period and mark the precipitation as F1;

[0077] Obtain the light intensity of the island during the vegetation restoration period, and mark the light intensity as F2;

[0078] Perform weighted processing on the precipitation F1 and light intensity F2 of the island during the vegetation restoration period. Divide the weight ratio of the precipitation F1 of the island during the vegetation restoration period into Divide the weight ratio of the light intensity F2 of the island during the vegetation restoration period into wherein, both n1 and n2 are greater than 0, and n2 is greater than n1;

[0079] Through the formula Obtain the positive restoration factor Fi of the island during the vegetation restoration period;

[0080] In step three, preset the first threshold of the island vegetation restoration energy efficiency base number as ZBX1, and the second threshold of the island vegetation restoration energy efficiency base number as ZBX2, wherein ZBX1 < ZBX2;

[0081] When ZBX < ZBX1, the comprehensive evaluation of the island vegetation restoration ability is poor;

[0082] When ZBX1 < ZBX < ZBX2, the comprehensive evaluation of the island vegetation restoration ability is good;

[0083] When ZBX > ZBX2, the comprehensive evaluation of the island vegetation restoration ability is excellent.

[0084] Embodiment 2

[0085] Please refer to Figure 2 As shown, the present invention is a comprehensive evaluation system for the vegetation restoration ability of uninhabited islands, including a data acquisition module, a data analysis module, an evaluation and identification module, and a server;

[0086] The data acquisition module, the data analysis module, and the evaluation and identification module are electrically connected to the server;

[0087] The data acquisition module is used to obtain the vegetation growth data and environmental data within the island, obtain the vegetation growth effective value and the island environmental anomaly value, and transmit the vegetation growth effective value and the island environmental anomaly value to the server;

[0088] The data analysis module receives the vegetation growth effective value and the island environmental anomaly value transmitted by the server. The data analysis module processes the plant growth effective value and the island environmental anomaly value to obtain the island vegetation restoration energy efficiency base number, and transmits the island vegetation restoration energy efficiency base number to the server;

[0089] The evaluation and identification module obtains the island vegetation restoration energy efficiency base number transmitted by the server. The evaluation and identification module compares the island vegetation restoration energy efficiency base number with the preset island vegetation restoration energy efficiency base number threshold to identify the island vegetation restoration ability.

[0090] One of the core points of the present invention is to process the island vegetation coverage data, plant growth rate data and island soil erosion data, that is, to obtain the effective value of vegetation growth through the vegetation coverage area, vegetation growth rate and island soil erosion after the island is restored, that is, the larger the vegetation coverage area after restoration, the faster the vegetation growth rate and the smaller the island soil erosion, the better the island vegetation restoration effect is, and the larger the effective value of vegetation growth is. At the same time, by monitoring the island temperature data, island humidity data and island soil data, that is, monitoring the island temperature data, island humidity data and island soil data, when the island temperature data is close to 25°C, the larger the island humidity data and island soil data are, the better the island vegetation growth environment is, and the larger the island environment anomaly value is, that is, the island environment anomaly value and the effective value of vegetation growth are effectively used to characterize the environment and vegetation after the island restoration, so that the state data of the island vegetation restoration is more real and reliable;

[0091] The second core point of the present invention is to obtain the island vegetation restoration energy efficiency base by combining the precipitation and light intensity of the island during the vegetation restoration period, and then forward processing the precipitation and light intensity with the island environmental anomaly value and the effective value of vegetation growth, so as to identify the island vegetation restoration process from multiple dimensions, namely, considering the natural weather factors, the environmental factors after vegetation restoration and the coverage factors after vegetation restoration, so as to make the assessment of the island vegetation restoration capacity more accurate.

[0092] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A comprehensive evaluation method for vegetation restoration capacity of uninhabited islands, characterized in that: It includes the following steps: S1: Obtain the vegetation growth data and environmental data within the island to obtain the vegetation growth effective value and the island environmental anomaly value; S2: Process the plant growth effective value and the island environmental anomaly value to obtain the island vegetation restoration energy efficiency base number; S3: Compare the island vegetation restoration energy efficiency base number with the preset island vegetation restoration energy efficiency base number threshold to identify the island vegetation restoration ability; In S1, the vegetation growth data includes vegetation coverage data, vegetation growth speed data, and island soil erosion data; The vegetation coverage data is the difference between the plant coverage area after the island vegetation restoration and the plant coverage area before the island vegetation restoration; The vegetation growth speed data is the product of the vegetation area expansion rate and the vegetation growth height obtained after the island vegetation restoration; The island soil erosion data is the difference between the soil erosion data before the island vegetation restoration and the soil erosion data after the island vegetation restoration; The process of obtaining the vegetation growth effective value is as follows: Mark the vegetation coverage data as Z1; Mark the vegetation growth speed data as Z2; Mark the island soil erosion data as Z3; By formula Obtain the effective value Z of vegetation growth, where γ is a preset proportional coefficient and γ>0; The island environmental data includes island temperature data, island humidity data, and island soil data; The process of obtaining the island environmental anomaly value is as follows: Mark the island temperature data as W1; Mark the island humidity data as W2; Mark the island soil data as W3; By formula The island environment change value W is calculated, where d1, d2 and d3 are preset proportional coefficients, and d1, d2 and d3 are all greater than 0; In S2, the process of obtaining the island vegetation restoration energy efficiency base number includes: Mark the vegetation growth effective value as Z and the island environmental anomaly value as W; By formula ZBX=Fi· ( Z+W ) The energy efficiency base of island vegetation restoration ZBX is calculated, and Fi is the positive restoration factor; The positive restoration factor Fi is obtained by weighting the precipitation during the island vegetation restoration period and the light intensity during the island vegetation restoration period.

2. The method for comprehensive evaluation of vegetation restoration capacity of uninhabited islands according to claim 1 is characterized in that: In S3, the first threshold of the preset island vegetation restoration energy efficiency base number is ZBX1, and the second threshold of the island vegetation restoration energy efficiency base number is ZBX2, where ZBX1 < ZBX2; Compare the island vegetation restoration energy efficiency base number with the first threshold and the second threshold of the island vegetation restoration energy efficiency base number to identify the island vegetation restoration ability.

3. The comprehensive evaluation method for vegetation restoration capacity of uninhabited islands according to claim 2 is characterized in that: If ZBX < ZBX1, the comprehensive evaluation of the island vegetation restoration ability is poor; If ZBX1 < ZBX < ZBX2, the comprehensive evaluation of the island vegetation restoration ability is good; If ZBX > ZBX2, the comprehensive evaluation of the island vegetation restoration ability is excellent.

4. An evaluation system for the evaluation method according to any one of claims 1 to 3, characterized in that: It includes: A data acquisition module, which is used to obtain the vegetation growth data and environmental data within the island, obtain the vegetation growth effective value and the island environmental anomaly value, and transmit the vegetation growth effective value and the island environmental anomaly value to the server; A data analysis module, which receives the vegetation growth effective value and the island environmental anomaly value transmitted by the server. The data analysis module processes the plant growth effective value and the island environmental anomaly value to obtain the island vegetation restoration energy efficiency base number, and transmits the island vegetation restoration energy efficiency base number to the server; An evaluation and identification module, which obtains the island vegetation restoration energy efficiency base number transmitted by the server. The evaluation and identification module compares the island vegetation restoration energy efficiency base number with the preset island vegetation restoration energy efficiency base number threshold to identify the island vegetation restoration ability; In S1, vegetation growth data include vegetation coverage data, vegetation growth rate data, and island soil erosion data; Vegetation coverage data is the difference between the plant coverage area after island vegetation restoration and the plant coverage area before island vegetation restoration; The vegetation growth rate data is the product of the vegetation area expansion rate and the vegetation growth height after island vegetation restoration; The island soil erosion data is the difference between the soil erosion data before and after island plantation restoration; The process of obtaining the effective value of vegetation growth is as follows: Mark the vegetation cover data as Z1; The vegetation growth rate data is labeled as Z2; The island soil erosion data is marked as Z3; By formula Obtain the effective value Z of vegetation growth, where γ is a preset proportional coefficient and γ>0; Island environmental data include island temperature data, island humidity data and island soil data; The process of obtaining the island environment change value is as follows: Label the island temperature data as W1; Label the island humidity data as W2; Label the island soil data as W3; By formula The island environment change value W is calculated, where d1, d2 and d3 are preset proportional coefficients, and d1, d2 and d3 are all greater than 0; In S2, the process of obtaining the energy efficiency base of island vegetation restoration includes: The effective value of vegetation growth is marked as Z, and the island environment change value is marked as W; By formula ZBX=Fi· ( Z+W ) The energy efficiency base of island vegetation restoration ZBX is calculated, and Fi is the positive restoration factor; The positive restoration factor Fi is obtained by weighting the precipitation on the island during the vegetation restoration period and the light intensity on the island during the vegetation restoration period.

Images