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.
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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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