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Grass and tree mixed phytoremediation method for coastal saline-alkali soil

A phytoremediation and saline-alkali soil technology, applied in the field of ecological restoration engineering, to achieve the effects of improving soil fertility, maintaining soil and water, and improving stability

Inactive Publication Date: 2021-11-19
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The repair method described in the present invention belongs to the forward-looking technology for the construction of seawater pumped storage power stations, and is mainly used in areas where the power grid is difficult to reach, such as offshore islands, during the construction of hydropower stations due to seawater spraying and transportation leakage. question

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  • Grass and tree mixed phytoremediation method for coastal saline-alkali soil
  • Grass and tree mixed phytoremediation method for coastal saline-alkali soil
  • Grass and tree mixed phytoremediation method for coastal saline-alkali soil

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Embodiment 1

[0047] This embodiment provides a method for phytoremediation of coastal saline-alkali soil mixed vegetation, and the method for phytoremediation of coastal saline-alkali soil comprises the following steps:

[0048](1) Preliminary screening: From August 2017 to July 2020, the vegetation of 49 islands and sandy shore shelterbelt plots along the coast of South China was investigated, based on the comprehensive analysis of plant community species composition, soil site conditions and literature review. There are 66 species of coastal salt-tolerant and drought-tolerant native plant resources in South China, including 25 species of arbor plants, 17 species of shrub plants, and 24 species of herbaceous plants, which have been included in the "Recommended Species Information Resources for Ecological Restoration of Terrestrial Ecosystems in Seawater Pumped Storage Power Stations" Library";

[0049] The 25 species of arbor plants are: Litsea glutinosa (Lour.) C.B.Rob.), Machilus veluti...

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Abstract

The invention provides a grass and tree mixed phytoremediation method for coastal saline-alkali soil, which is characterized by comprising the following steps: (1) preliminary screening: investigating vegetation of a coastal island and / or a sand bank protection forest sample plot, and then performing preliminary screening according to an investigation result, wherein the preliminarily screened salt-tolerant plants comprise arbor plants, shrub plants and herbaceous plants; and (2) planting: carrying out mixed and graded planting on the screened arbor plants, shrub plants and herbaceous plants to realize the restoration of the coastal saline-alkali soil. The phytoremediation method belongs to a prospective technology of seawater pumped storage power station construction, and is mainly used for solving the problem of nearby soil salinization caused by seawater spilling and transportation leakage in the hydropower station construction process in areas, such as offshore islands, where power grids are difficult to reach.

Description

technical field [0001] The invention relates to the technical field of ecological restoration engineering, in particular to a method for restoring coastal saline-alkali soil with mixed vegetation and plants. Background technique [0002] Soil is a complex system composed of solid, liquid and gas, which contains various salts. Appropriate concentration of salt can maintain soil function and plant growth needs, but when the salt concentration exceeds its required value, because the dissolved salts accumulate on the soil surface, it will become saline-alkali soil, which can be divided according to the salt content and emergence rate For mild, moderate and severe saline-alkali soil. Excessive soil salinity will not only deteriorate the soil structure, water permeability, air permeability, increase pH, reduce organic matter content, reduce production capacity and fertility, etc.; on the other hand, it will also affect the protein structure of the plants growing in it. Affected,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G20/00A01G22/00A01G22/60
CPCA01G17/005A01G20/00A01G22/00A01G22/60Y02P60/12
Inventor 彭逸生王梓豪赵丽丽罗惠敏卢耀斌刘广立
Owner SUN YAT SEN UNIV
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