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Method for ecological remediation of sea island bare land

A technology of ecological restoration and restoration methods, applied in the field of environmental governance, can solve problems such as high cost and insufficient fertility, and achieve the effects of improving soil foundation, strong water retention capacity, and improving air permeability

Active Publication Date: 2017-05-24
SECOND INST OF OCEANOGRAPHY MNR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this method needs to use a large amount of high-quality foreign soil, the cost is high, and problems such as insufficient fertility are prone to follow-up

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Block 1 island bare land ecological restoration method, the restoration method includes the following steps:

[0029] (1) Shallow excavation in the bare land of the island, with an excavation depth of 10cm;

[0030] (2) Backfilling with foreign soil, using improved mellow soil to backfill on the kelp bare land after shallow excavation, the backfill depth is 40cm, and the improved mellow soil is processed from the following raw materials in parts by weight:

[0031] 800 parts of mellow soil, 100 parts of fiber material, 40 parts of organic fertilizer, 2 parts of water-retaining agent, 5 parts of soil stabilizer (purchased from: Shenzhen Xinmiaosen Ecological Environment Construction Co., Ltd.), the fiber material is crushed sawdust, Fully mix the mellow soil, fiber material, organic fertilizer, water retaining agent and soil stabilizer;

[0032] (3) Slow-release active nutrient packs are buried. A number of slow-release active nutrient packs are distributed and buried i...

Embodiment 2

[0036] Block 2 island bare land ecological restoration method, the restoration method includes the following steps:

[0037] (1) Shallow excavation in the bare land of the island, with an excavation depth of 20cm;

[0038] (2) Backfilling with foreign soil, using improved mellow soil to backfill on the kelp bare land after shallow excavation, the backfill depth is 30cm, and the improved mellow soil is processed from the following raw materials in parts by weight:

[0039] 1000 parts of mellow soil, 150 parts of fiber material, 60 parts of organic fertilizer, 5 parts of water-retaining agent, 10 parts of soil stabilizer, the fiber material is pulverized bamboo chips, the mellow soil, fiber material, organic fertilizer, water-retaining agent and soil The stabilizer can be fully mixed evenly;

[0040] (3) Slow-release active nutrient packs are buried. A number of slow-release active nutrient packs are distributed and buried in the backfilled improved mellow soil at equal interva...

Embodiment 3

[0044] Block 3 island bare land ecological restoration method, the restoration method includes the following steps:

[0045] (1) Shallow excavation in the bare land of the island, with an excavation depth of 15cm;

[0046] (2) Backfilling with foreign soil, using improved mellow soil to backfill on the kelp bare land after shallow excavation, the backfill depth is 35cm, and the improved mellow soil is processed from the following raw materials in parts by weight:

[0047] 900 parts of mellow soil, 120 parts of fiber material, 50 parts of organic fertilizer, 3 parts of water-retaining agent, and 6 parts of soil stabilizer. The fiber material is a mixture of crushed sawdust and straw with a mass ratio of 1:2. , organic fertilizer, water retaining agent and soil stabilizer can be fully mixed evenly;

[0048] (3) Slow-release active nutrient packs are buried. A number of slow-release active nutrient packs are distributed and buried in the backfilled improved mellow soil at equal ...

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Abstract

The invention relates to a method for ecological remediation of sea island bare land. The method includes steps: (1) shallow excavating of the sea island bare land; (2) replacement soil backfilling; (3) landfill of controlled-release active nutritional packages; (4) sowing of zoysia matrella; (5) cuttage of procumbent juniper. By backfilling of improved mellow soil, a soil base of the sea island bare land can be improved, air permeability of the mellow soil is greatly improved due to addition of fiber materials, and less proneness to caking in long-time use is realized after the mellow soil is backfilled to sea island land; due to organic fertilizers, water retaining agents and soil stabilizing agents, the backfilled mellow soil is rich in nutrition, great in water retaining performance and high in soil property stability and provides sufficient nutrients and moisture for early growth of zoysia matrella and procumbent juniper. The controlled-release active nutritional packages are rich in natural organics and adsorbed and stored trace elements and buried into the improved mellow soil to continuously and slowly release and degrade under rain flushing and natural diffusion, so that nutrient loss can be greatly avoided, and continuous nutrient supply can be provided for later growth of zoysia matrella and procumbent juniper.

Description

technical field [0001] The invention relates to a method for ecological restoration of bare land on sea islands, and belongs to the technical field of environmental management. Background technique [0002] The island has a special geographical location, far away from the mainland, and lacks communication with the outside ecosystem, forming its own unique landform, geological structure and biological community characteristics. Islands are often small in size, simple in geographical structure, limited in resources, low in biodiversity, and relatively simple in their ecological structure, resulting in poor stability of the island ecosystem, limited environmental capacity and environmental carrying capacity, and a very fragile ecosystem. The bare land on the island is mostly bedrock or sandy ground, and the terrain is uneven. A small amount of barren-tolerant and low-growing herbaceous plants grow around the low-lying land during the rainy season, and die naturally when the dry...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G1/00A01G17/00C05G1/00
CPCA01B79/02A01G17/005A01G22/00C05F5/006C05F5/008C05D9/00C05D9/02
Inventor 谭勇华于淼王德刚
Owner SECOND INST OF OCEANOGRAPHY MNR
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