A directional restoration method for degraded Sedge-Ceratophylla vegetation in floodplain wetlands

A technology for directional restoration and floodplain, applied in the field of directional restoration of degraded sedge-little leaf vegetation, can solve the problems of low efficiency, long vegetation restoration time, uncertain restoration results, etc., and achieves strong operability and strong nutrient absorption capacity. , the effect of improving competitiveness

Active Publication Date: 2022-08-09
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of long restoration time, low efficiency and uncertain restoration results of the existing floodplain wetland vegetation, and provides a directional restoration method for the degraded sedge-microphylla vegetation of the floodplain wetland

Method used

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  • A directional restoration method for degraded Sedge-Ceratophylla vegetation in floodplain wetlands
  • A directional restoration method for degraded Sedge-Ceratophylla vegetation in floodplain wetlands
  • A directional restoration method for degraded Sedge-Ceratophylla vegetation in floodplain wetlands

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specific Embodiment approach 1

[0039] Embodiment 1: The directional restoration method of the degraded Sedge-Ceratophytum vegetation in the floodplain wetland of the present embodiment includes the following steps:

[0040] 1. The first vegetation survey is carried out at the end of June every year. 3-5 transects are set up in each wetland sample site, 3 quadrat are randomly set on each transect, and the plants in each quadrat are divided into four groups. Measure and record the coverage, above-ground biomass and density of each plant group in the quadrat;

[0041] Then the second vegetation survey will be carried out at the end of August. The method of the second vegetation survey is the same as that of the first vegetation survey;

[0042] After that, the results of the two vegetation surveys were comprehensively calculated to characterize the vegetation growth status of the wetland:

[0043] The plant coverage of each group is C=(C1+C2) / 2, where C1 is the coverage of the first survey, and C2 is the cove...

specific Embodiment approach 2

[0057] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the sample strips in step 1 are set at a distance of 150-160m from the edge of the wetland, and the distance between the sample zones is 300-350m. Others are the same as the first embodiment.

[0058] The purpose of setting the transect in this way in this embodiment is to eliminate the marginal effect. 150-160m away from the edge of the wetland, the survey transect is designed mainly for the disturbance of human activities around the wetland, such as the degree of influence of roads, villages, etc., and the width of the transition zone between wetland and grassland or other ecosystems, etc., effectively avoiding the above-mentioned The influence of factors on wetland properties. In addition, the purpose of setting the distance between transects at 300-350m is to solve the problem that the distance between transects is too close and cannot fully represent the wetland properties.

specific Embodiment approach 3

[0059] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in Step 1, the length of each sample tape is 60-65m, and the width is 30-35m. Others are the same as the first embodiment.

[0060] The setting of the transect size in this embodiment mainly satisfies the randomness and representativeness of the quadrat setup.

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Abstract

A method for directional restoration of degraded Sedge-Ceratophylla vegetation in river floodplain wetlands relates to the field of wetland vegetation restoration, in particular to a method for directional restoration of degraded Sedge-Ceratophylla vegetation. It is to solve the problems of long time, low efficiency and uncertain restoration results for vegetation restoration in existing floodplain wetlands. Methods: 1. Conduct the first vegetation survey at the end of June each year, and conduct the second vegetation survey at the end of August; after that, comprehensively calculate the results of the two vegetation surveys to characterize the vegetation growth status of the wetland; 2. Determine the wetland degradation level; 3. Develop restoration plans for different degrees of degradation; 4. Post-restoration management. Compared with the natural restoration method, the restoration target vegetation (i.e. Sedge and Ceratophylla populations) increased the coverage by 26%-43%, the biomass increased by 3.1-4.4 times, and the population density increased by 4.4-6.1 times, and the restoration effect was remarkable. The invention is applied to the field of wetland vegetation restoration.

Description

technical field [0001] The invention relates to the field of wetland vegetation restoration, in particular to a method for directional restoration of degraded Sedge-Ceratophylla vegetation. Background technique [0002] The sedge (Carex spp.)-Calamagrostis angustifolia wetland in the floodplain along the Nenjiang River is a typical latent swamp wetland in the semi-arid region of Northeast China. The Sedge-Xiaoye Zhang Wetland is an important habitat and breeding ground for rare water birds such as the oriental white stork (Ciconia boyciana), and an important stopover station on the north-south migration trunk line of East Asian migratory birds. . [0003] In recent years, in order to meet the needs of agricultural irrigation water, industrial water, and domestic water, a number of water conservancy projects have been built in the supply river upstream of the wetlands in the west of Songnen. Although part of the water use problem has been solved, it has caused a serious imb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/00
CPCA01G22/00Y02A40/22
Inventor 安雨宋铁军高阳佟守正刘波武海涛崔庚
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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