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Forest system carbon flux estimation method

A carbon flux and forest technology, which is applied in the field of forest system carbon flux estimation, can solve the problems of low accuracy of estimation results and large amount of calculation, and achieve the effects of ensuring estimation accuracy, improving efficiency, and reducing estimation time

Active Publication Date: 2020-04-28
HEILONGJIANG INST OF TECH
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Problems solved by technology

[0009] The purpose of the present invention is to solve the problems of large amount of calculation and low accuracy of estimation results existing in the estimation method of carbon flux in the forest system

Method used

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  • Forest system carbon flux estimation method

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specific Embodiment approach 1

[0041] Specific implementation mode one: refer to figure 1 To describe this embodiment in detail,

[0042] This embodiment is a method for estimating carbon flux in a forest system, including the following steps:

[0043] Step 1. Training process:

[0044] S1. Obtain meteorological data, basic geographic data, vegetation physiological and ecological parameter data (actually vegetation physiological and ecological data, including a variety of vegetation physiological and ecological parameters, so it is called vegetation physiological and ecological parameter data), soil data within the estimated area and carbon flux observation data;

[0045] In the process of obtaining data, some meteorological data, soil data, etc. can be directly obtained according to the corresponding data acquisition device actually deployed, or can be obtained according to existing data, such as directly using the observation data of the observation station (the observation data of the observation stati...

Embodiment

[0083] The simulation is carried out according to the specific implementation mode. There is no limited scheme in the specific implementation mode, and it is carried out according to the method in "Biome-BGC Model Parameter Optimization and Northeast Forest Carbon Flux Estimation Research" (hereinafter referred to as the paper). In order to compare and illustrate the effect of the present invention, the experiment is also estimated for the northeast forest carbon flux. Carbon flux is closely related to ecosystem productivity, and the two have the same physical meaning under certain assumptions. In large-scale research, because it is impossible to directly and comprehensively measure the carbon flux of the ecosystem, and usually do not consider various disturbances such as logging, fire, and pests and diseases, here, for the purpose of verifying the estimation results of the regional-scale model, heterooxygen respiration is ignored , the deep forest ecosystem carbon flux is app...

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Abstract

The invention discloses a forest system carbon flux estimation method, and relates to the technical field of carbon flux estimation. The method aims to solve the problems that an existing forest system carbon flux estimation method is large in calculated amount and low in estimation result accuracy. According to the method, sensitivity analysis is carried out on vegetation physiological and ecological parameters and carbon flux based on a point-scale Biome-BGC model, sensitive vegetation physiological and ecological parameters are determined, then correlation analysis is carried out, and datatypes related to data types in the sensitive vegetation physiological and ecological parameters are removed; and Biome-BGC model parameters of a point scale are determined in combination with meteorological data, the Biome-BGC model parameters are taken as model parameters of a regional scale Biome-BGC model, errors are determined in combination with an error neural network model, and finally an estimation result of the forest system carbon flux is determined. The method is mainly used for estimating forest system carbon flux.

Description

technical field [0001] The present invention relates to methods for estimating carbon fluxes. The invention belongs to the technical field of forest system carbon flux estimation. Background technique [0002] With the development of human activities and industry, especially the use of fossil fuels in industry, a series of problems have emerged in the human ecological environment, among which the problem of "greenhouse effect" is more prominent. Relevant data show that: the concentration of atmospheric CO2 in the early stage of the industrial revolution was 280ppm, and by 2017, the concentration of CO2 had increased rapidly to 406.42ppm. Greenhouse gas is only one of the reasons for the rise of global temperature, and it has also caused other environmental problems. [0003] The forest ecosystem is the largest carbon pool in the terrestrial ecosystem. The carbon exchange between the forest and the atmosphere accounts for more than 90% of the total exchange between the terre...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26G06N3/08
CPCG06N3/08G06Q10/0639G06Q50/26
Inventor 梅晓丹曲建光刘丹丹田静田泽宇
Owner HEILONGJIANG INST OF TECH
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