A Calculation Method of Soil Erosion Carbon Pool Loss in Historical Period

A soil erosion and loss technology, applied in the field of environmental science, can solve problems such as inability to estimate soil erosion and carbon pool loss

Active Publication Date: 2021-06-25
INST OF EARTH ENVIRONMENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above methods are mainly used to estimate the amount of soil erosion and carbon pool loss at the watershed and regional scale, and cannot estimate the amount of soil erosion and carbon pool loss at the site scale

Method used

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  • A Calculation Method of Soil Erosion Carbon Pool Loss in Historical Period
  • A Calculation Method of Soil Erosion Carbon Pool Loss in Historical Period

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Embodiment 1

[0026] A method for calculating the amount of soil erosion carbon pool loss in historical periods, the method for calculating the amount of soil erosion carbon pool loss in historical periods includes the following steps:

[0027] S1: Establishment of the depth-age relationship function of the uneroded soil profile. A typical highland area of ​​the Loess Plateau with well-preserved soil profile and no obvious erosion was selected as a reference site for soil profile excavation and sample collection; high-resolution soil sample collection was carried out layer by layer in the excavation profile, using 14 C dating technology, measuring the age of soil corresponding to different soil layers, and then using different soil layers 14 C dating results, establish the soil profile depth-age relationship function;

[0028] S2: Stratified sampling of soil profiles in erosion areas and 14 C age determination. Select the area to be studied for soil profile excavation and sample collecti...

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Abstract

The invention discloses a method for calculating the loss of soil erosion carbon pool in the historical period, which relates to the field of environmental science and mainly includes the following steps: S1: establishment of the depth-age relationship function of the uneroded soil profile; S2: stratification of the soil profile in the eroded area Sampling and soil age determination; S3: Calculation of soil erosion in erosion areas; S4: Calculation of soil erosion carbon pool loss in erosion areas. The present invention utilizes 14 C dating technology and soil deposition theory, combining soil erosion and soil carbon pool loss estimation, provides a calculation method for soil erosion carbon pool loss under different site conditions on the Loess Plateau, making up for soil erosion carbon in historical periods The calculation method of the stock loss is missing.

Description

technical field [0001] The invention relates to the field of environmental science, in particular to a method for calculating the loss of soil erosion carbon pool in historical periods. Background technique [0002] Soil is the largest carbon pool in terrestrial ecosystems, and changes in the source-sink pattern of soil carbon pools will affect atmospheric CO 2 Concentrations have an important impact on global climate change. On the one hand, soils have a huge carbon sink potential, with a global soil carbon sequestration potential as high as 0.4–1.2 Pg C yr with appropriate ecosystem management measures -1 , which can roughly offset the global annual fossil fuel emissions of CO 2 5-15% of. On the other hand, if soil carbon pools are not managed properly, soils can become a huge source of CO 2 Emission source. The conversion of natural ecosystems to agricultural ecosystems will lead to a decline of about 60% in soil carbon stocks in temperate regions, while the loss of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 王凯博时伟宇邓蕾上官周平陈怡平
Owner INST OF EARTH ENVIRONMENT CHINESE ACAD OF SCI
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