Method for dynamically determining content of reed-litter organic matter transferred to soil

A technology of dynamic measurement and litter, applied in the direction of soil material testing, material inspection products, etc., to achieve the effect of accurate data

Inactive Publication Date: 2016-07-20
JIANGSU UNIV
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Problems solved by technology

[0006] In order to solve the existing shortage of monitoring the amount of organic matter transfer in litter and determine the content of organic matter transferred to soil per unit area of ​​reed litter during the entire growth period, the present invention simulates the litter dynamics and hydrological environment of reed litter and regularly presse

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  • Method for dynamically determining content of reed-litter organic matter transferred to soil

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Example Embodiment

[0016] A specific example is given below to illustrate the present invention in detail.

[0017] The experiment was carried out on July 20, 2014 in the open space outside the greenhouse of Jiangsu University. Common loam was excavated in the outskirts of Jiangsu University, sand and gravel and plant roots were removed by sieving, spread and dried in the sun, thoroughly mixed and then packed into buckets. The barrel is 35cm high and 35cm in diameter. Each barrel contains 30kg soil, 5 barrels in total.

[0018] 1. Simulate the soil moisture status of the riverside wetland

[0019] The water storage in the bucket is adjusted by the weighing method to simulate the wet period, normal period and dry period of the riverside wetland respectively. From July to September, the water storage capacity in the bucket should not be less than 140% of the field water holding capacity, and keep it flooded; the water storage capacity in November should not be less than 100% of the field water holding...

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Abstract

The invention provides a method for dynamically determining the content of reed-litter organic matter transferred to soil, and belongs to the field of wetland ecosystems.Multiple vessels are put outdoors, the vessels are filled with soil, the moisture content in the soil is adjusted according to riverside wetland hydrological dynamics, and simulated wetland water ecosystems are constructed; the ratio of the soil surface area and unit area in each vessel is calculated according to the leaf litter situation of reed plants in unit area, and litters are periodically added to the surface layers of the vessels; stratified sampling is conducted on the vessels according to predetermined time intervals, content changes of the organic matter in the soil are monitored, and therefore dynamic changes of the content of the litter organic matter, transferred to the soil, of a target reed community is determined.According to the method for dynamically determining the content of the reed-litter organic matter transferred to the soil, the transfer amount of carbon in the litters of riverside wetland reeds of the down stream of Changjiang River can be accurately obtained, and a theoretical basis and practical value are provided for research of wetland carbon circulation.

Description

Technical field: [0001] The invention relates to a method for measuring the content of organic matter transferred to soil in reed litter, which belongs to the category of wetland ecosystem classification. Background technique: [0002] As an important part of the carbon cycle of terrestrial ecosystems, although wetlands only account for a small part of the land surface area, 2%-6%, their carbon pools account for 18%-30% of the total terrestrial carbon pools. Wetlands are important carbon "sinks" in terrestrial ecosystems due to their high productivity and low decomposition rate of organic matter. While wetlands can absorb carbon dioxide from the atmosphere and fix it, they are also a significant source of the greenhouse gas methane. The organic carbon of wetland soil is a sensitive indicator of climate change, which can be used to indicate the response of wetland to climate change. Therefore, wetlands play an important role in controlling the carbon cycle of terrestrial ec...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 付为国滕博群谷睿智王凡坤赵云王雨轩
Owner JIANGSU UNIV
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