Method for analyzing forest grass carbon sink in project development area based on CIM model

Abstract

The invention discloses a CIM model-based forest and grass carbon sink analysis method in a project development area. The method comprises the steps of 1, inputting original landform information of a city model in the project development area into a CIM platform; 2, inputting a project model to be developed into the CIM platform; 3, supplementing model information; 4, vegetation information in the original landform information is analyzed and collected; 5, calculating forest grass vegetation carbon sink efficiency in the original landform information; 6, simulating and analyzing the change condition of forest grass vegetation and the change condition of carbon sink in the project construction stage through a CIM platform; 7, simulating and analyzing the vegetation reconstruction condition after the project is built through a CIM platform; 8, calculating forest and grass vegetation reconstruction carbon sink efficiency through a CIM platform; and 9, evaluating the carbon sink influence in the project development period. The invention relates to the technical field of building engineering, and can solve the problem that the building design carbon sink analysis decision-making capability is reduced due to inconvenient acquisition of carbon sink calculation data in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering technology, and in particular to a method for analyzing forest and grass carbon sinks in a project development area based on a CIM (City Information Modeling) model. Background Art

[0002] Carbon sink refers to the process, activity or mechanism of reducing the concentration of greenhouse gases in the atmosphere by absorbing carbon dioxide in the atmosphere through measures such as afforestation and vegetation restoration. During the construction process of the construction project, the green vegetation in the city will be damaged, resulting in a reduction in the total amount of carbon sink. The green vegetation needs to be restored after the construction project is completed. The area, quantity and type of green vegetation are determined based on the changes in the total amount of carbon sink.

[0003] At present, the collection and analysis of carbon sink calculation data lacks a strong supporting basis. The traditional method of analyzing carbon sinks relies on information surveys by professional departments. The information is scattered and difficult to verify its authenticity. The carbon sink calculation data is inconvenient to obtain, which reduces the carbon sink analysis and decision-making ability of architectural design to a certain extent. Therefore, it is necessary to provide a forest and grass carbon sink analysis method in the project development area based on the CIM model, which can solve the problem of the inconvenience of obtaining carbon sink calculation data in the existing technology and reduce the carbon sink analysis and decision-making ability of architectural design. Summary of the invention

[0004] The purpose of the present invention is to provide a method for analyzing forest and grass carbon sinks in a project development area based on a CIM model, which can solve the problem in the prior art that it is inconvenient to obtain carbon sink calculation data and thus reduce the ability to make carbon sink analysis decisions in architectural design.

[0005] The present invention is achieved in that:

[0006] A method for analyzing forest and grassland carbon sequestration in a project development area based on a CIM model includes the following steps:

[0007] Step 1: Input the original landform information of the urban model in the project development area into the CIM platform;

[0008] Step 2: Enter the proposed project model into the CIM platform;

[0009] Step 3: Model information supplement, i.e. adding information for carbon sink calculation;

[0010] Step 4: Analyze and collect vegetation information in the original landform information;

[0011] Step 5: Calculate the carbon sequestration efficiency of forest and grass vegetation in the original landform information;

[0012] Step 6: Use the CIM platform to simulate and analyze the changes in forest and grass vegetation and their carbon sinks during the project construction phase;

[0013] Step 7: Use the CIM platform to simulate and analyze the vegetation restoration after the project is completed;

[0014] Step 8: Calculate the carbon sink efficiency of forest and grass vegetation restoration through the CIM platform;

[0015] Step 9: Assess the carbon sequestration impact during the project development cycle.

[0016] In the step 1, the original landform information includes the forest and grass vegetation coverage in and around the project development area.

[0017] In the step 2, the model of the proposed development project includes: a site occupancy model during the project construction phase and a model for forest and grass vegetation reconstruction after the project is completed.

[0018] In the step 3, the coverage area of ​​forest and grass vegetation in the original landform information is analyzed through the CIM platform, and the proportion and type of forest and grass vegetation in the urban model are added for carbon sink calculation information.

[0019] For the calculation of the annual carbon absorption of crops in the planting industry, the calculation formula for the annual carbon absorption of crops is as follows:

[0020] C t =i*C f *D w =i*C f *Y w *(1-w i ) / H i

[0021] Among them, C t is the annual carbon absorption of crops; i is the crop variety; C f The amount of carbon required for crops to photosynthesize dry matter, i.e. the economic coefficient; D w is the total biomass of crops; Y w is the economic output of crops; w i is the moisture content of crops; H i is the carbon absorption rate of crops.

[0022] In step 4, the vegetation information includes: vegetation coverage characteristics and current coverage areas of various types of vegetation.

[0023] The vegetation restoration situation includes the characteristics, types, areas and quantities of the reconstructed green vegetation.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention uses the CIM platform, takes advantage of the multi-source information integration of the CIM platform, and combines the dynamic simulation evolution of the greening area changes of the forest and grass vegetation around the construction project and after the project is completed. It can more conveniently obtain information data for calculating the carbon sink of forest and grass vegetation, facilitate the analysis of the damage to forest and grass vegetation caused by the construction of the development project and the area of ​​forest and grass vegetation reconstruction, thereby calculating the change curve of carbon sink efficiency and carbon sink total amount, analyzing the impact on carbon sink during the project development cycle, and helping to improve the carbon sink analysis and decision-making ability of architectural design. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a flow chart of the method for analyzing forest and grass carbon sinks in a project development area based on the CIM model of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] Please see attached Figure 1 A method for analyzing forest and grassland carbon sequestration in a project development area based on a CIM model includes the following steps:

[0029] Step 1: Enter the original landform information of the urban model within the project development area into the CIM platform.

[0030] In the step 1, the original landform information includes the forest and grass vegetation coverage in and around the project development area.

[0031] With the development of CIM city platform technology, the integration of multi-source information has become convenient. The multi-source heterogeneous technology of CIM platform can support the convenience of information analysis and collection. With the improvement of CIM city models across the country, the accuracy of forest and grass vegetation coverage information in urban models based on CIM platform is gradually improving, and the carbon sink calculation data of forest and grass vegetation can be easily obtained through CIM platform. Therefore, the present invention collects the carbon sink calculation information of forest and grass vegetation in the project development area based on the CIM platform of the project development location, making the carbon sink calculation method of forest and grass vegetation more convenient, and also conducive to improving the carbon sink analysis and decision-making ability of architectural design.

[0032] Step 2: Enter the model of the proposed project into the CIM platform.

[0033] In the step 2, the model of the proposed development project includes: a site occupancy model during the project construction phase and a model for forest and grass vegetation reconstruction after the project is completed.

[0034] Step 3: Supplement model information, that is, add information used for carbon sink calculation.

[0035] In the step 3, the coverage area of ​​forest and grass vegetation in the original landform information is analyzed through the CIM platform, and the proportion and type of forest and grass vegetation in the urban model can be added for carbon sink calculation information.

[0036] Taking the planting industry as an example, the information added may include but is not limited to the annual carbon absorption of crops, land use changes, vegetation coverage, planting coverage area, daily carbon fixation of plants, etc. The carbon sink calculation information is added and supplemented according to the type of forest and grass vegetation.

[0037] The calculation of the annual carbon absorption of crops in the planting industry is convenient for the subsequent carbon sink calculation. The calculation formula of the annual carbon absorption of crops is as follows:

[0038] C t =i*C f *D w =i*C f *Y w *(1-w i ) / H i

[0039] Among them, C t is the annual carbon absorption of crops; i is the crop variety; C f The amount of carbon required for crops to photosynthesize dry matter, i.e. the economic coefficient; D w is the total biomass of crops; Y w is the economic output of crops; w i is the moisture content of crops; H i is the carbon absorption rate of crops.

[0040] Step 4: Analyze and collect vegetation information in the original landform information.

[0041] In step 4, the vegetation information includes: vegetation coverage characteristics, current coverage areas of various types of vegetation, etc.

[0042] Based on the forest and grass vegetation information in the original landform information, combined with the site occupation and forest and grass vegetation regeneration in the project development area, the reduction or increase of forest and grass vegetation and the changes in carbon sinks during the project construction process can be analyzed.

[0043] Step 5: Calculate the carbon sequestration efficiency of forest and grass vegetation in the original landform information.

[0044] Specifically, the current carbon sink efficiency is calculated through the CIM platform based on the forest and grass vegetation information in the project development area of ​​the urban model.

[0045] The carbon sequestration efficiency of forest and grass vegetation is calculated using conventional carbon sequestration calculation methods based on parameters such as the quantity, type, and coverage area of ​​forest and grass vegetation. The calculation process will not be repeated here.

[0046] Step 6: Use the CIM platform to simulate and analyze the changes in forest and grass vegetation and their carbon sinks during the project construction phase.

[0047] Specifically, the CIM platform is used to analyze the site occupation of the development project during the construction phase, compare the destruction or increase of forest and grass vegetation in the project development area before and after, and calculate the carbon sink reduction or increase benefits and the total amount of carbon sink reduction or increase in the area during the construction phase of the development project, i.e. the construction period.

[0048] The CIM platform can provide dynamic simulation evolution of the model. According to the changes of forest and grass vegetation in the project development area during the entire construction cycle of the development project, the coverage area, types, quantity, etc. of the forest and grass vegetation can be dynamically simulated and evolved through the CIM platform. Therefore, the carbon sink calculation data of the forest and grass vegetation in the project development area can be obtained in real time through the CIM platform.

[0049] For the case where the forest and grass vegetation coverage rate in the original landform is 0, the forest and grass vegetation coverage rate of the project will increase during the construction period. For the case where the forest and grass vegetation coverage rate in the original landform is greater than 0, the project may destroy the original forest and grass vegetation during the construction period, resulting in a decrease in the forest and grass vegetation coverage rate. In the later stage, as the construction progresses, the forest and grass vegetation will be gradually restored.

[0050] Since the coverage rate and types of forest and grass vegetation will change during the construction period, their carbon sink benefits and carbon sink totals will also change accordingly.

[0051] Step 7: Use the CIM platform to simulate and analyze the vegetation restoration after the project is completed.

[0052] The vegetation restoration situation includes the green vegetation area such as garden construction that may be included in the development project. The green vegetation area is used to restore the vegetation damaged by the development project construction or to increase the vegetation area in the project development area.

[0053] The vegetation restoration situation includes the characteristics, types, areas, quantities, etc. of the reconstructed green vegetation.

[0054] Step 8: Calculate the carbon sink efficiency of forest and grass vegetation restoration through the CIM platform.

[0055] Through the CIM platform, the vegetation reconstruction after the project is completed and the forest and grass vegetation information required for carbon sink calculation are collected to calculate the carbon sink benefits of forest and grass vegetation reconstruction in the project development area after the project is completed, as well as the annual and monthly carbon sink totals of forest and grass vegetation.

[0056] Step 9: Assess the carbon sequestration impact during the project development cycle.

[0057] Specifically, as the development project is under construction, the urban model will be updated and evolved through the CIM platform, and the changes in forest and grass vegetation in the project development area, changes in carbon sink efficiency, and the growth of annual and monthly carbon sink totals in the vegetation during the project development cycle will be analyzed.

[0058] As development projects are constructed, forest and grass vegetation are gradually restored. The urban model can be updated in real time or regularly through the CIM platform, making it easier to summarize changes in the number, coverage area, type, and characteristics of green forest and grass vegetation, and then calculate changes in carbon sequestration efficiency caused by changes in forest and grass vegetation.

[0059] Preferably, as the city model is updated, a change curve can be generated based on the calculated carbon sink interest rate, annual carbon sink total, monthly carbon sink total and other data to more intuitively display the changes in carbon sink efficiency and facilitate the analysis of the growth of carbon sink efficiency, annual carbon sink total and monthly carbon sink total.

[0060] Embodiment 1:

[0061] During the construction of a certain construction project in a certain city, the CIM platform was used to obtain the original landform exposed as demolition land in the project development area of ​​the construction project, with a forest and grass vegetation coverage area of ​​0 and a carbon sink benefit of 0. The project carried out in the project development area is the reconstruction of forest and grass vegetation. With the progress of the project development, the CIM platform is used to regularly simulate the process of forest and grass vegetation reconstruction in the project development area, analyze the process of carbon sink growth during the process of forest and grass vegetation reconstruction, and analyze the growth of carbon sink efficiency in the area.

[0062] The CIM platform was used to collect information such as the greening area after the project was completed and the carbon sink data of the greening model, and it was found that the total greening area increased by 116,500m 2 , of which bamboo forest area increased by 2300m 2 、The area of ​​trees increased by 94,000m 2 , shrub area increased by 10,200m 2 、The palm area increased by 10,000m 2 The corresponding forest and grass vegetation area model inputs the daily carbon fixation of various plants, plant proportion, and carbon sink calculation data, including the plant species and their daily carbon fixation (the value in brackets is the daily carbon fixation per unit leaf area of ​​the corresponding plant, and its unit is g·m -2 ·d -1 ) may include but are not limited to:

[0063] Tree type: Xinjiang Poplar * (34.10), spruce (20.09), silver poplar * (16.47), Birch * (16.13), Elm *(16.06), Chinese fir (12.57), Platycladus orientalis (11.92), Populus * (10.35), bald cypress * (10.10), Araucaria heterophylla (9.09).

[0064] Leaf tree: Sugar maple * (16.59), Golden Leaf Sophora japonica (16.02), Purple Leaf Peach (14.08), False Areca (13.12), Bottle Coconut (13), Purple Leaf Peach * (13) Uber * (12.80), Dragon Claw * (12.68), Purple-leaved Prunus cerasifera (12.61), Torchwood * (12.39).

[0065] Flowers and trees: Prunus mume-leaved (32.71), Catalpa ovata (29.96), Xanthoceras sorbifolia * (29.83), Dragon Tooth Flower (24.42), Red Flower Peach * (20.57), Snow in June (18.68), Bauhinia * (15.17), peach * (14.93), Yellow Rose * (14.03), Paulownia * (13.37).

[0066] Shade trees: Bigleaf white dragonfly (20.03), mosquito tree * (18.14), Luan Shu * (15.84), mulberry (15.67), weeping elm * (14.21), Ligustrum lucidum (12.12), Holly * (11.83), Elaeocarpus longifolia (11.81), Sophora japonica * (11.24), compound feather leaves * (10.95).

[0067] Fruit trees: Apple (17.18), Pyracantha * (15.87), Persimmon Tree * (14.13), Phlox * (11.89), Pomegranate * (11.17), Changbai Honeysuckle (11.16), Loquat * (10.86), Baishe (8.66), Yangmei * (8.49), Chicken Tree Branch Water Lily * (7.77).

[0068] Hedge species: Buddaria (70.54), Clematis macrophylla* (36.21), Jiaodong Euonymus * (19.07), Golden Elm * (18.80), Euonymus * (17.98), Cassia corymbosa * (17.39), Euonymus japonicus (15.38), Elaeagnus chinensis * (12.31), Welcome Spring * (12.13), the ten great contributions of narrow leaves * (12.03).

[0069] Creepers: Euonymus fortunei (11.9), Euonymus fortunei (11.35), Parthenocissus quinquefolius (8.48), Euonymus fortunei * (8.25), Akebia (7.77), Ivy * (6.44), Ling Xiao * (6.02), Five-leafed ivy * (5.40), Wisteria * (5.05), firecracker flower (4.93).

[0070] Bamboo: Cow bamboo (7.73), crooked-footed dragon bamboo (7.68), vest bamboo (7.26), Xiashan mud bamboo (6.16), long-branch bamboo (6.04), flower-browed bamboo (5.72), mud bamboo (5.67), moso bamboo (5.66), wood bamboo (5.58), Xinyi carnation (5.34).

[0071] As the model grows during the project development cycle, the changes in its forest and grass vegetation coverage during the cycle can dynamically analyze the carbon sink amount in the project development area, and compare the carbon sink efficiency and carbon sink amount before and after development. The improvement in carbon sink efficiency and the increase in carbon sink amount can provide accurate design analysis decisions and traceable data for project carbon sink review for the green benefit analysis during the development cycle of the urban renewal project, and can also improve the carbon sink analysis and decision-making capabilities of architectural design.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for analyzing forest and grassland carbon sequestration in a project development area based on the CIM model, characterized by: The following steps are involved: Step 1: Input the original landform information of the urban model in the project development area into the CIM platform; Step 2: Enter the proposed project model into the CIM platform; Step 3: Model information supplement, i.e. adding information for carbon sink calculation; Step 4: Analyze and collect vegetation information in the original landform information; Step 5: Calculate the carbon sequestration efficiency of forest and grass vegetation in the original landform information; Step 6: Use the CIM platform to simulate and analyze the changes in forest and grass vegetation and their carbon sinks during the project construction phase; Step 7: Use the CIM platform to simulate and analyze the vegetation restoration after the project is completed; Step 8: Calculate the carbon sink efficiency of forest and grass vegetation restoration through the CIM platform; Step 9: Assess the carbon sequestration impact during the project development cycle.

2. The method for analyzing forest and grass carbon sinks in a project development area based on the CIM model according to claim 1 is characterized by: In the step 1, the original landform information includes the forest and grass vegetation coverage in and around the project development area.

3. The method for analyzing forest and grass carbon sinks in a project development area based on the CIM model according to claim 1 is characterized by: In the step 2, the model of the proposed development project includes: a site occupancy model during the project construction phase and a model for forest and grass vegetation reconstruction after the project is completed.

4. The method for analyzing forest and grass carbon sinks in a project development area based on the CIM model according to claim 1 is characterized by: In the step 3, the coverage area of ​​forest and grass vegetation in the original landform information is analyzed through the CIM platform, and the proportion and type of forest and grass vegetation in the urban model are added for carbon sink calculation information.

5. The method for analyzing forest and grass carbon sinks in a project development area based on the CIM model according to claim 4 is characterized by: For the calculation of the annual carbon absorption of crops in the planting industry, the calculation formula for the annual carbon absorption of crops is as follows: C t =i*C f *D w =i*C f *Y w *(1-w i ) / H i Among them, C t is the annual carbon absorption of crops; i is the crop variety; C f The amount of carbon required for crops to photosynthesize dry matter, i.e. the economic coefficient; D w is the total biomass of crops; Y w is the economic output of crops; w i is the moisture content of crops; H i is the carbon absorption rate of crops.

6. The method for analyzing forest and grass carbon sinks in a project development area based on the CIM model according to claim 1 is characterized by: In step 4, the vegetation information includes: vegetation coverage characteristics and current coverage areas of various types of vegetation.

7. The method for analyzing forest and grass carbon sinks in a project development area based on the CIM model according to claim 1 is characterized by: The vegetation restoration situation includes the characteristics, types, areas and quantities of the reconstructed green vegetation.

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