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Fast cheap ecological re-construction of concentrated sea saline soil

A low-cost, heavy-salt technology, applied in the restoration of polluted soil, etc., can solve the problems of ignoring ecological benefits, returning salt, and high construction costs, and achieve the effect of ecological reconstruction

Inactive Publication Date: 2006-11-01
TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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Problems solved by technology

[0003] The purpose of the present invention is to provide a low-cost rapid ecological reconstruction method for coastal heavy saline soil, which overcomes the problems of high construction costs, high maintenance costs, serious salt return, and neglect of ecological benefits in the current low-cost rapid ecological reconstruction of coastal heavy saline soil
[0004] Aiming at the current ecological construction process in coastal areas, especially heavy saline soil with a salt content higher than 1.5%. Using the principles of seepage measurement and salinity drainage and plow layer protection to build simple engineering facilities simultaneously, artificial interference, speed up the natural succession process, quickly transform high-salt, low-nutrient bases at low cost, realize ecological reconstruction, and make it easy to be widely promoted

Method used

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Embodiment Construction

[0017] Existing studies have shown that using this technology to bioremediate saline-alkali land and coastal saline soil can significantly improve the soil, such as improving soil structure, reducing soil salinity and bulk density, increasing soil porosity, and increasing soil organic matter. and total nitrogen, soil biological activities such as soil microorganisms and soil enzymes were also significantly improved. Soil is an organic complex of inorganic matter, organic matter, and organisms (mainly microorganisms). Changes in the physical and chemical properties of soil will inevitably affect the organisms in it, and biological changes will in turn affect the physical and chemical properties of the soil.

[0018] The coastal saline-alkali soil in the "863 Estuary Ecological Reconstruction Demonstration Area" of the Tianjin Estuary was biorestored by planting Suaeda salsa, with a total area of ​​20 hectares.

[0019] It should be pointed out that the cost per unit area of ​​...

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Abstract

A method for low-cost fast restoration of ecological environment on the heavily salinized earth at seaside includes such steps as digging the network of draining canals with pitch of 30-150 m, depth of 1.2m and width of 3m, leveling, deep ploughing, planting the halophyte seepweed for absorbing the salt, and removing the seepweed.

Description

technical field [0001] The invention belongs to a reconstruction method for coastal heavy saline soil, in particular to a low-cost rapid ecological reconstruction method for coastal heavy saline soil. Background technique [0002] As people pay more attention to the ecological environment, more and more attention has been paid to the ecological restoration and ecological reconstruction of the damaged ecosystem, and the related greening technology and saline-alkali land transformation technology have also been continuously developed. At present, the saline-alkali land greening technology in Tianjin Development Zone is relatively mature. This technology mainly uses dense hidden pipes and partition layers to control the groundwater level and discharge salt in the soil layer below 1 meter. Layers of plants are planted for greening. This method has the characteristics of quick effect and wide application range, and has been widely used in the greening of coastal areas. However,...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
Inventor 李小宁孙贻超邵晓龙侯晓珉李红柳孙静张征云邓小文
Owner TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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