Construction method of river sandbar wetland in cold region

A construction method and river technology, applied in the fields of botany equipment and methods, horticulture, agriculture, etc., can solve the problem of unfavorable organisms foraging, nesting, spawning, refuge, the decline of the habitat quality of rivers and rivers in cold regions, and the reduction of habitat suitability. and stability and other issues, to achieve the effect of improving the diversity of river habitats, lowering soil fertility requirements, and avoiding seed loss.

Inactive Publication Date: 2021-01-29
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the natural environment, due to the large water flow during the wet season of the river, many unstable natural sandbar wetlands are severely damaged by the erosion of the river, and it is difficult to recover in a short period of time, which is not conducive to the foraging and nesting of organisms , spawning, and refuge, reducing the suitability and stability of the habitat, which eventually led to a decline in the habitat quality of rivers in cold regions and a significant reduction in biodiversity

Method used

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  • Construction method of river sandbar wetland in cold region
  • Construction method of river sandbar wetland in cold region
  • Construction method of river sandbar wetland in cold region

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] result:

[0061] In the Baoquanling section of the middle reaches of the Wutong River, a tributary of the Songhua River, the sandbar wetland was constructed according to the above method. The offshore distance of the sandbar is 3-4m, and the length of the sandbar is 85m. The survey in September 2016 showed that the coverage rate of herbaceous vegetation on the sandbar wetland in the middle reaches of Baoquanling River, a tributary of the Songhua River, was 10%. After fixed-point sampling of the river water around the sandbar, two species of benthic animals were found, namely The larvae of Heilongjiang short ditch curl and arrowfly, with a biomass of 0.44g / m 2 , with an abundance of 0.66ind. / m 2 , Shannon's diversity index was 1; 5 species of fish were found in total, namely crocodile, Heilongjiang loach, snake squid, Heilongjiang squid, and Laspei, with a total of 26 species.

[0062] According to the method of Example 1 of the present invention, after the sandbar wet...

Embodiment 2

[0064] result:

[0065] In the Xiaoshan section of the middle reaches of the Wutong River, a tributary of the Songhua River, the sandbar wetland was constructed according to the above method. The offshore distance of the sandbar is 2-4m, and the length of the sandbar is 55m. According to the survey in September 2016, the vegetation coverage rate on the sandbar wetland was 8%. After fixed-point sampling in the river water around the sandbar, a total of 1 species of benthos was found, which was the larvae of the family Stonefly, with a biomass of 0.0006g / m 2 , with an abundance of 0.33ind. / m 2 , Shannon's diversity index was 0; a total of 3 species of fish were found, namely Heilongjiang loach, Heilongjiang squid, and Lasse's squid, with a total of 18 species.

[0066] According to the method of Example 1 of the present invention, after the sandbar wetland habitat was constructed in 2017, the survey in September 2018 showed that the survival rate of Curly willow on the sandbar ...

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Abstract

The invention discloses a method for constructing a river sandbar wetland in a cold area. The flow direction is the same, wherein, the river sandbar in the cold area is surrounded by water on all sides, the length is not less than 50m, and the distance between the edge of the river sandbar in the cold area and the bank of the adjacent river in the cold area is less than 20m; At least two kinds of Artemisia chinensis, Orientia chinensis, Echinopsis microphyllum and Barnyardgrass barnyardii are used to form herbaceous plant populations. The method of the invention builds various habitat systems by shaping the terrain space of the sandbar and disposing the plants, so as to achieve the purpose of improving the diversity of river habitats.

Description

technical field [0001] The invention relates to the technical field of river ecological restoration, in particular to a method for constructing river sandbar wetlands in cold regions. Background technique [0002] Sandbar wetlands are accumulation landforms formed by the accumulation of water flow and waves. For natural rivers, sandbar wetlands, as a special habitat patch in the river matrix, have special ecological significance in biology. On the one hand, the stable sandbar wetland is conducive to the bifurcation of the river and reduces the flow velocity, thus forming a slow water area, which becomes the habitat of benthic animals and some fish; on the other hand, the lush sandbar wetland provides abundant wildlife. With a small ecological space, it becomes a habitat for benthic animals, fish, amphibians, birds and other creatures, and it becomes the zone with the richest biodiversity in the river. In the natural environment, due to the large flow of water during the wet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00A01G22/00A01G9/029
Inventor 李黎王瑜刘录三刘云龙林岿璇朱延忠王蕊
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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