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Degraded wetland vegetation in-situ recovery method

A technology of wetland vegetation and wetland plants, applied in the field of in-situ restoration of degraded wetland vegetation, can solve the problems of no technology and achievement reports for in-situ restoration of degraded wetland vegetation, low cost of seeding method, high risk of failure, etc., to achieve High biodiversity and landscape naturalness, fast vegetation recovery, and reduced input costs

Inactive Publication Date: 2013-11-06
BEIJING BSTC WETLAND ECOLOGY & ENVIRONMENTAL PROTECTION TECH
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For plants capable of vegetative reproduction, vegetative transplantation is a good method with a high success rate, but this method is only suitable for the restoration of small areas or local vegetation, which is less natural, has higher maintenance costs and is labor-intensive and time-consuming. Single; the turf transplantation method has a high success rate and good landscape effects, and is especially suitable for the restoration of natural wetlands; however, it also has the disadvantages of high cost and large environmental damage; as for the sowing method, it is low in cost and easy to operate in large areas, but currently There are few species of wetland restoration plants that can be used for sowing, and the risk of failure is high
[0005] So far, there have been no reports on the technology and results of in-situ restoration of degraded wetland vegetation using its own surviving soil seed bank

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0114] A degraded wetland is selected, and the remaining seed bank resources in the soil are used to restore the vegetation in situ of the degraded wetland. The calculation of the important value is as follows:

[0115](1) Through sampling, seed germination test, plant species identification and quantitative statistics on the same type of healthy wetlands, a total of 47 species of wetland plants and non-wetland plants were obtained, including 38 species of wetland plants.

[0116] Take one of the trefoil ghost needles as an example to calculate the important value:

[0117] Important value = (relative density + relative frequency + relative coverage) / 3

[0118] The important value of the three-leaf ghost needle = (407 / 2122×100%+0.5 / 8.5×100%+164 / 615×100%) / 3

[0119] =(26.30%+5.88%+26.67%) / 3

[0120] =19.62%

[0121] Among them, the relative density is: 407 / 2122×100%

[0122] The relative frequency is: 0.5 / 8.5×100%

[0123] The relative coverage is: 164 / 615×100%

[0124] C...

example 2

[0147] Take the results of plant surveys and seed bank surveys on healthy wetlands and restored wetlands as examples:

[0148] (1) Through sampling, seed germination test, plant species identification and quantity statistics on the same type of healthy wetlands, the total plant species in native wetlands are: 45 species, including 34 species of wetland plants; let the total number of seeds be X and wetland plants The number of seeds is X wet.

[0149] The survey results are based on the formula Y=X grains×2×1m 2 / [π×(0.04m / 2) 2 ×5]

[0150] Y=148 / 0.02512

[0151] Y=5879 grains / m 2

[0152] Among them, wetland plant seeds have Y wet = X wet × 2 × 1m 2 / [π×(0.04m / 2) 2 ×5]

[0153] Y wet=113 / 0.02512

[0154] Y wet=4498 grains / m 2

[0155] (2) Through sampling, seed germination test, plant species identification and quantity statistics on the restored wetland, the total plant species in the restored wetland are: 36 species, including 24 species of hygrophytes; the total...

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Abstract

The invention relates to a degraded wetland vegetation in-situ recovery method, which is characterized in that according to the method, a seed bank resource remained in selected degraded wetland soil is utilized for carrying out vegetation in-situ recovery. The method comprises the following steps that 1) a soil seed bank is surveyed, and whether the degraded wetland has the vegetation in-situ recovery conditions or not and the plant types with the advantages in the soil seed bank are determined; 2) the water supplementation is carried out on regions meeting the vegetation in-situ recovery conditions in the first step, and in addition, the ground surface water level and the soil moisture content are controlled; 3) the ground surface vegetation after the degraded wetland vegetation in-situ recovery in the second step is surveyed; and 4) the successfully recovered soil seed bank is surveyed to confirm the recovery completion. The method has the advantages that the self remained soil seed bank resource is sufficiently utilized, the operation is easy, the maintenance cost is low, the vegetation recovery is fast, the species diversity is high, and the popularization and the application are easy.

Description

technical field [0001] The invention relates to a method for restoring degraded wetland vegetation; specifically, it relates to a method for restoring degraded wetland vegetation in situ. Background technique [0002] Wetlands, together with land and ocean, are called the three major ecosystems in the world, and their ecological service value and service functions are second to none among the three major ecosystems. Due to the overuse of human beings and the impact of climate change, wetlands in my country are still showing an overall degradation trend, seriously affecting national ecological security and sustainable economic and social development. Restoring damaged wetlands has become the focus of national ecological construction. [0003] Wetland restoration refers to the restoration or reconstruction of degraded or lost wetlands through ecological technology or ecological engineering, to reproduce its structure and function before disturbance, as well as related physical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01G7/00
Inventor 洪剑明刘树
Owner BEIJING BSTC WETLAND ECOLOGY & ENVIRONMENTAL PROTECTION TECH
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