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Fast metering method for any depth organic carbon reserve of forest soil

A technology of arbitrary depth and measurement method, applied in soil material testing, material inspection products, etc., can solve problems such as inability to measure organic carbon storage, time-consuming and labor-intensive

Inactive Publication Date: 2015-12-09
HENAN UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

The above methods are time-consuming and labor-intensive, and can only estimate the overall data of regional organic carbon, but cannot measure the storage of soil organic carbon at any depth in the regional forest

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 3

[0023] Example 1 Measurement of Forest Soil Organic Carbon in Heigou Watershed, Zigui County, Three Gorges Reservoir Area

[0024] Using the above-mentioned forest soil organic carbon depth distribution model and measurement model, using the soil bulk density and soil organic carbon content data measured in the previous period, the determined depth distribution model is as follows:

[0025] S h =2.465+49.87×exp(-5.970× h )

[0026] Q h = h ×2.465+49.87×(e -5.970 ×h -1) / 5.970

[0027] It is estimated that the soil organic carbon storage in the 0-30cm soil layer in the Heigou small watershed of the Three Gorges Reservoir area is about 5290.32±74.85t, the soil organic carbon storage in the 0-100cm soil layer is about 8280.87±120.98t, and the soil organic carbon storage in the 0-30cm layer It accounts for about 63.89% of the entire section.

Embodiment 2

[0028] Example 2 Measurement of soil organic carbon in 4 forests including temperate coniferous forest, temperate deciduous forest, subtropical mixed coniferous and broad-leaved forest and tropical evergreen broad-leaved forest

[0029] We also selected forest stands under four types of forest biomes, including cold-temperate coniferous forests, temperate deciduous forests, subtropical mixed coniferous and broad-leaved forests, tropical evergreen broad-leaved forests, etc., to establish a soil organic carbon depth distribution database and construct soil organic carbon quality Density depth distribution model; using Nash-Sutcliffe efficiency coefficient (E), error percentage (PE), determination coefficient (R 2 ) And other statistical parameters to evaluate the simulation effect of the model; use the constructed depth distribution model to extrapolate the deeper soil organic carbon density. The depth distribution model of the 4 types of forest stands is as follows:

[0030] S h ...

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Abstract

A fast metering method for any depth organic carbon reserve of forest soil comprises the steps: determining model parameters by regional soil mechanical sampling and calculating regional any depth organic carbon reserve by using the model. The method has the beneficial effects that by a distribution and metering model of regional forest soil organic carbon, a depth distribution model of the organic carbon of the forest soil in a specific region is established, the organic carbon reserve of soil of different depths is convenient and simple to meter, the workload is small and time and labor are saved.

Description

technical field [0001] The invention relates to the technical field of soil organic carbon measurement in forest ecology, in particular to a rapid measurement method for organic carbon storage at any depth in forest soil. Background technique [0002] Soil carbon is usually measured by carbon density and carbon storage. Carbon density refers to the carbon storage per unit area, usually referring to soil organic carbon storage, which is an indicator to measure the abundance of organic carbon in a certain area. Forest soil organic carbon has great heterogeneity in space. Due to the influence of environmental factors, the measurement process of forest soil carbon is very complicated, and the measurement results have great uncertainty. The correct measurement of soil organic carbon storage is the premise and basis of measures to increase soil carbon sinks. At present, the measurement of soil organic carbon mostly adopts the sample point method, which has a large workload and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
Inventor 田耀武贺春玲王宁
Owner HENAN UNIV OF SCI & TECH
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