Method for precisely evaluating storage amount of organic carbon in thicket-type carex swamp soil

Abstract

The invention discloses a method for precisely evaluating the storage amount of organic carbon in thicket-type carex swamp soil. The method comprises the steps that the density, the heights and the basal diameters of grass mounds are measured; the volumes of the grass mounds are calculated; the storage amount of the organic carbon in the grass mounds is calculated; the storage amount of the organic carbon in the soil under the grass mounds and the soil between the grass grounds are calculated; the storage amount of the organic carbon in the soil per unit area of a thicket-type carex swamp is calculated; and the storage amount of the organic carbon in the thicket-type carex swamp soil is evaluated. The method has the beneficial effects that (1) according to the actual shape of the grass mounds, an ellipsoidal or cylindrical grass ground volume calculating method is selected scientifically, and thus a grass mound organic carbon pool is evaluated more accurately; and (2) the differences among the soil volume weight and the organic carbon content in the grass mound carbon pool, the soil volume weight and the organic carbon content under covering of the grass mounds, and the soil volumeweight and the organic carbon content in the soil between the mounds are fully considered and calculated separately, and thus evaluation of the storage amount of the organic carbon in the thicket-type carex swamp soil is more precise and more scientific.

Description

technical field [0001] The invention belongs to the technical field of soil carbon storage, and in particular relates to an accurate evaluation method for soil organic carbon storage of a dense sedge swamp. Background technique [0002] Marsh wetland soil is an important soil organic carbon storage pool on land, containing 15% to 30% of the global soil carbon pool, and its small changes will lead to CO in the atmosphere. 2 and CH 4 Therefore, marsh wetlands provide important support for regulating the climate environment and mitigating global climate change. The statistics of soil organic carbon storage in marsh wetlands have also become an important part of the work of the signatory countries of the United Nations Framework Agreement on Climate Change (UN-FCCC) to determine the net greenhouse gas emission flux at the national scale. Estimation of soil organic carbon storage in various types of marsh wetlands has always been a hot research topic at home and abroad. [000...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that existing methods cannot accurately calculate the soil organic carbon storage of dense sedge swamp wetlands, and provide an accurate evaluation method for soil organic carbon storage of dense sedge swamps

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