Ecological restoration method for resident-free island damaged bare land
A technology of ecological restoration and bare land, applied in the field of environmental management, can solve the problems of poor long-term effect and slow recovery speed, and achieve the effect of improving speed, improving permeability and reducing water loss.
Pending Publication Date: 2021-06-08
中交广州水运工程设计研究院有限公司 +1
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Problems solved by technology
[0004] The purpose of the present invention is to provide a method for ecological restoration of damaged bare land on uninhabited islands, to solve the problems of slow restoration speed and poor long-term effect of existing island ecological restoration methods
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[0027] An embodiment, an ecological restoration method for damaged bare land on uninhabited islands, mainly repairing uninhabited islands in subtropical regions. The area of the restored island is 2150m 2 . Such as figure 1 , including the following steps:
[0028] 1) Pretreatment of the damaged bare land, cleaning up the garbage and stones on the hillside, flat land, grass and other areas on the island, and then removing the 15-25cm thick surface soil to ensure that the average unevenness of the slope is within 20mm. For smooth rock surfaces, it is necessary to excavate transverse trenches on the surface, locally encrypt anchor rods or hang multi-layer nets for roughening and anchoring treatment to prevent the planting soil from slipping. The layout and spacing of the anchors shall be determined according to the rock formation structure and geological conditions on site.
[0029] 2) Soil improvement, using improved foreign soil to backfill on the damaged bare ground whe...
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Abstract
The invention relates to an ecological restoration method for a resident-free island damaged bare land. The ecological restoration method comprises the steps of damaged bare land pretreatment, soil improvement, herbaceous plants spraying and sowing, trees and shrubs planting, water collection, fertilization and irrigation. According to the ecological restoration method, the island damaged bare land is pretreated, the terrain is prepared, and phytoremediation and catchment irrigation are facilitated; a planting soil foundation of the damaged bare land is improved through the soil improvement, and the soil improvement comprises planting soil replacement and matrix soil covering; a water collecting system is used for collecting rainwater and conveying the rainwater to an irrigation system, the problems of small island area and lack of fresh water resources are solved, and a water source is provided for the later growth period of plants; according to a slow-release fertilizer, a slow-release fertilizer pesticide bag is placed in a pesticide dispensing barrel, fertility is slowly released, the pesticide effect time is long, the water is supplied for fertilization through the irrigation system, a long-acting guarantee is provided for ecological restoration of the damaged bare land, the fertility and water storage capacity of soil of the damaged bare land are gradually restored, the biological diversity of an island is increased, and the stability and the stress resistance of a resident-free island ecological system are improved.
Description
technical field [0001] The invention relates to an ecological restoration method for damaged bare land on an uninhabited island, and belongs to the technical field of environmental management. Background technique [0002] Uninhabited islands refer to islands that do not belong to the address registration place of resident household registration management. There are many islands in my country, about 94% of which are uninhabited islands. As an independent geographical unit, uninhabited islands often have a simple geographical structure, small area, barren land, lack of fresh water resources, few types of vegetation in terrestrial ecosystems, and simple ecosystem structures, resulting in extremely fragile and sensitive island ecosystems. weak. Once the vegetation on uninhabited islands is destroyed, it is easy to cause water and soil erosion, the soil nutrients are low, the bedrock is exposed, and it is difficult for crops to grow, making it difficult to restore the island ...
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IPC IPC(8): A01G17/00A01G20/00A01G22/00A01B79/02A01B79/00B01D35/16B01D36/04C09K17/40C09K101/00
CPCA01G17/005A01G20/00A01G22/00A01B79/02A01B79/00C09K17/40B01D36/04B01D35/16C09K2101/00
Inventor 伍晓洪张向营李承柱王帅李博文
Owner 中交广州水运工程设计研究院有限公司
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