Optimal environment variable screening method for time-space dynamic prediction of soil organic carbon pool

An environmental variable, spatiotemporal dynamic technology, applied in the field of quantitative soil science, can solve problems such as difficult to define, affect the spatiotemporal dynamic estimation of soil carbon pool, mutual influence, etc., and achieve the effect of easy promotion.

Active Publication Date: 2018-11-06
INST OF SOIL SCI CHINESE ACAD OF SCI
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Problems solved by technology

[0007] (2) Existing spatial prediction technology pays more attention to model construction and uncertainty assessment, and relatively ignores the selection of model input parameters
These environmental variables have a certain degree of uncertainty and interact with each other, and it is difficult to accurately define them with the traditional variable screening mechanism.
[0009] T...

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  • Optimal environment variable screening method for time-space dynamic prediction of soil organic carbon pool
  • Optimal environment variable screening method for time-space dynamic prediction of soil organic carbon pool
  • Optimal environment variable screening method for time-space dynamic prediction of soil organic carbon pool

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Embodiment Construction

[0036] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] The basic idea of ​​the optimal environmental variable screening method for the temporal and spatial dynamic prediction of soil organic carbon pools designed in the present invention is to collect and sort out soil databases, dynamic and static environmental variable sets in different periods, and specify soil carbon pool simulations according to the timeliness of soil data. Valid time period - "time slice". According to the soil organic carbon density information in different landscape areas, various attribute information of various dynamic and static environmental variables are analyzed, and then the AHP and expert knowledge are used to construct an effective optimal set of environmental variables within a specific time slice.

[0038] Such as figure 1 As shown, the present invention designs a method for screen...

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Abstract

The invention relates to an optimal environment variable screening method for time-space dynamic prediction of a soil organic carbon pool. Soil databases in different periods, and dynamic and static environment variable sets are collected and sorted; and according to the timeliness of soil data, an effective time period, namely, "a time slice" for simulating the soil carbon pool is stipulated. Various attribute information of various dynamic and static environment variables is analyzed according to soil organic carbon density information in different landscape areas, so that an analytic hierarchy process and expert knowledge are used for constructing an effective optimal environment variable set in the specific time slice.

Description

technical field [0001] The invention relates to a soil organic carbon pool spatiotemporal dynamic prediction optimal environmental variable screening method, which belongs to the technical field of soil measurement. Background technique [0002] Soil organic carbon is a collective term for the humus produced by animal and plant residues, microorganisms, and soil microorganisms. Compared with soil inorganic carbon pools, soil organic carbon content is more sensitive to soil tillage and land use changes. The problem of global warming since the industrial revolution has forced governments to pay more and more attention to the reduction of greenhouse gas emissions. According to relevant statistics, the organic carbon storage within one meter of soil is the most important component of the soil carbon pool. As the largest carbon pool in the global terrestrial ecosystem, the soil carbon pool is about the sum of the atmospheric carbon pool and the terrestrial ecosystem carbon pool...

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/26G06F17/18
CPCG06F17/18G06Q10/04G06Q50/26
Inventor 宋效东朱俊吴华勇刘峰元野张甘霖
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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