A method to rapidly improve soil carbon sequestration capacity in abandoned industrial and mining land

A technology for abandoned land, industrial and mining, applied in land preparation methods, agriculture, applications, etc., can solve the problem of single, no industrial and mining waste land soil use to rapidly improve the soil carbon sequestration capacity in mining areas, patent reports, and large room for technical improvement.

Active Publication Date: 2020-07-07
INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above-mentioned methods for improving soil carbon sequestration capacity are all based on non-industrial and mining areas, and there is no technology or patent report that can be used on the soil of industrial and mining wasteland to rapidly improve the carbon sequestration capacity of mining area soil
In addition, the existing methods and technologies for improving soil carbon sequestration capacity generally adopt a single measure, which cannot take advantage of the superimposed effect of various carbon-increasing measures, and there is still a lot of room for technological improvement.

Method used

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  • A method to rapidly improve soil carbon sequestration capacity in abandoned industrial and mining land
  • A method to rapidly improve soil carbon sequestration capacity in abandoned industrial and mining land

Examples

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Effect test

Embodiment 1

[0036] In view of the low organic carbon content of the soil in the mining area, poor nutrient content, poor biological activity, and low crop yield, this example uses topsoil stripping, subsoil filling of straw, mixed layered application of farm manure and nitrohumic acid, and spraying of microbial agents , Crop rotation and other measures to effectively improve the soil carbon sequestration capacity.

[0037] The test site was selected at the test base of Keye Village, Xiabao Town, Xiaoyi City, Shanxi Province. This area is a hilly area of ​​the Loess Plateau, with an average annual rainfall of about 400mm, deep soil, serious soil erosion, and low fertility. The local area is rich in coal and bauxite, and the mining method is mainly open pit mining.

[0038] The site is an industrial site abandoned by aluminum mines for many years, covering an area of ​​122 acres, in a parallelogram shape, and will be reclaimed in the spring of 2007. The basic data of the surface soil (0-20cm) ...

Embodiment 2

[0057] The test site was selected at the base of Xishandi Village, Wangqiao Town, Xiangyuan County, Shanxi Province. The base is a thick loess covered area, and the mining method is underground mining. After mining, it gradually begins to sink and sinks in the shape of a pot bottom, which directly affects land cultivation.

[0058] Reclamation began in 2008, and topographic surveys were first carried out during reclamation. On this basis, bulldozers were used for leveling, pushing up and padding down, and finally using a laser leveler for secondary leveling.

[0059] The collapsed land area totals 32 mu, which is irregular. The local annual average rainfall is 510mm, the soil is deep and the fertility is medium.

[0060] The basic data of the surface soil (0-20cm) of the test site are as follows: the average content of soil organic carbon is 2.35g / Kg, pH value is 8.23, total nitrogen is 0.039%, available phosphorus is 5.25mg / Kg, available potassium is 75.6mg / Kg, soil bulk density is...

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Abstract

The invention discloses a method for quickly improving the carbon sequestration capacity of soil in an industrial and mining wasteland. The method comprises stripping surface soil of an industrial and mining wasteland which is to be reclaimed; laying straw which is mixed with urea and a straw decomposition agent on base soil; laying surface soil which is mixed with decomposed farmyard manure and nitro humic acid and performing compaction; spraying a microbial agent, and planting green fertilizer crops; harvesting the crops, performing overturning and pressing for returning the crops to the field; and then performing rotation of corn and sorghum crops and returning the straw to the field, so as to improve the organic carbon content of the soil in a short time, improve the physical and chemical properties of the soil and increase the soil fertility. The method provided by the invention can quickly improve the carbon content of the soil, improve the physical and chemical properties of the soil, increase the soil fertility, and has important significance for promoting the land reclamation and ecological restoration of industrial and mining areas.

Description

Technical field [0001] The invention belongs to the technical field of land reclamation and soil improvement, and relates to a method for improving soil carbon sequestration capacity, and in particular to a method suitable for rapid improvement of the soil carbon sequestration capacity of industrial and mining wasteland in the Loess Plateau. Background technique [0002] Soil is an important part of terrestrial ecosystem. As one of the most active carbon pools in the surface ecosystem, the soil carbon pool is twice that of the atmosphere, and it is an important source of greenhouse gas release and an important sink. Improving the carbon sequestration capacity of soil is of great significance for reducing atmospheric carbon dioxide concentration and controlling the greenhouse effect. [0003] The area of ​​damaged land in my country's mining areas has reached 2 million hectares, and it is still increasing at a rate of 40,000 hectares per year. The land subsidence, occupation or ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 张强靳东升郜春花李建华张变华卢晋晶武文丽吕薇
Owner INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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