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Estimation method for soil respiration on basis of remote sensing data

A technology of soil respiration and remote sensing data, applied in the field of soil respiration estimation, can solve the problems of large uncertainty and coarse spatial resolution, and achieve the effect of reducing uncertainty

Active Publication Date: 2017-07-21
AEROSPACE INFORMATION RES INST CAS
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Problems solved by technology

However, statistical models driven by meteorological data or soil property data are used to estimate soil respiration, with coarse spatial resolution and large spatial uncertainty

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  • Estimation method for soil respiration on basis of remote sensing data

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Embodiment Construction

[0011] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0012] figure 1 A flow chart of the soil respiration estimation method according to the present invention is shown. Such as figure 1 As shown, the soil respiration estimation method of the present invention starts at step S101, and a regional soil respiration analysis data set is constructed through data sharing, literature research, field experiments and other means. The regional soil respiration analysis data set includes: soil respiration observation data, multi-source remote sensing data and auxiliary analysis data (such as climate type data).

[0013] Next, step S102 is executed to divide biome regions. Different biomes have different climate and vegetation characteristics. Therefore, the responses of soil respiration to environmental and vegetation factors in different biomes may be very different. In order to improv...

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Abstract

The invention discloses an estimation method for soil respiration on basis of remote sensing data. According to the estimation method, spatial estimation accuracy of the soil respiration on large-area scale can be improved and the uncertainty of a soil respiration space is reduced. The estimation method comprises the following steps: constructing a regional soil respiration analysis data set; dividing biomes; constructing a soil respiration estimation model driven by multi-source remote sensing data; verifying and selecting an optimal soil respiration estimation model, so as to obtain regional-scale spatial-temporal distribution of the soil respiration by using spatial remote sensing data as driving data.

Description

technical field [0001] The invention relates to a method for estimating soil respiration, in particular to a method for estimating soil respiration based on remote sensing data. Background technique [0002] Soil respiration describes the emission of CO from soil to the atmosphere 2 It is the second largest carbon flux component after total primary productivity in the carbon cycle of terrestrial ecosystems, and plays an important role in the carbon cycle and carbon budget of terrestrial ecosystems. [0003] The traditional estimation of soil respiration adopts the method of field measurement. Although this method has high accuracy in points, it is impossible to obtain the soil respiration on a large regional scale through the method of actual measurement. At present, the estimation of soil respiration on a large regional scale usually uses statistical models, with spatially interpolated meteorological data (temperature and precipitation) or soil organic carbon data (spatial...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 黄妮王力郭义强牛铮
Owner AEROSPACE INFORMATION RES INST CAS
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