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Method for identifying effect of water logging events on carbon flux of crop soil units

A technology of crops and carbon flux, applied in soil material testing, material inspection products, instruments, etc., can solve the problems of restricting carbon storage in carbon pools and less research on the mechanism analysis of experimental fields

Inactive Publication Date: 2019-06-07
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Waterlogging and waterlogging events affect soil carbon source / sink conversion process by affecting soil respiration, and then restrict the carbon storage of farmland ecosystem carbon pool
Previous studies focused on large-scale model simulation or remote sensing inversion, and there were few studies on mechanism analysis at the test field scale

Method used

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  • Method for identifying effect of water logging events on carbon flux of crop soil units
  • Method for identifying effect of water logging events on carbon flux of crop soil units
  • Method for identifying effect of water logging events on carbon flux of crop soil units

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Embodiment Construction

[0030] In the following detailed description, certain exemplary embodiments of the present invention are simply shown and described by way of illustration. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

[0031] The following describes the technical solutions in the embodiments of the present invention clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiment is only one embodiment of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0032] Such as fi...

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Abstract

The invention discloses a method for identifying the effect of water logging events on the carbon flux of crop soil units, which includes the following steps: setting water logging scenarios for soilunits at different growth stages of crops; measuring the CO2 concentration of the soil units at different time periods under different water logging scenarios in different growth stages of crops; calculating the CO2 flux of the crop soil units according to the measured CO2 concentration, and drawing a change trend curve of CO2 flux under different water logging scenarios in different growth stagesof crops and a change trend curve of CO2 flux under natural conditions; and comparatively analyzing the two curves to quantitatively identify the effect of water logging events on the carbon flux ofthe crop soil units. The method focuses on CO2 flux, including the emission and absorption process of the soil units. The carbon source / sink problem of the crop soil units can be judged, and thus, a scientific support is provided for the study of the carbon source / sink problem of the farmland ecosystem.

Description

Technical field [0001] The invention relates to the field of identifying the influence of a waterlogging event on the carbon flux of a farmland ecosystem, in particular to a method for identifying the influence of a waterlogging event on the carbon flux of a crop soil unit. Background technique [0002] Farmland is an important part of the carbon cycle of terrestrial ecosystems. Farmland Ecosystem CO 2 Flux research is an important part of exploring the transformation of “carbon sources” and “carbon sinks” in terrestrial ecosystems. Farmland ecosystems CO 2 Flux mainly includes CO 2 The former mainly involves the photosynthesis process; the latter includes crop and soil respiration processes. [0003] Waterlogging and waterlogging events affect the process of soil carbon source / sink conversion by affecting soil respiration, which in turn restricts the carbon storage of the farmland ecosystem carbon pool. Previous studies focused on large-scale model simulation or remote sensing in...

Claims

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Application Information

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IPC IPC(8): G01N33/24G06F17/50G06Q50/02
CPCY02P90/84
Inventor 王利娜秦天玲严登华王煜史婉丽王金杰刘文静
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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