Effects of removal of the breeding seine on aquatic plant diversity in Yuanxinhu area of Chang lake

doi:10.14088/j.cnki.issn0439-8114.2019.21.019

Abstract

Abstract: Based on the large-scale breeding seine caused of the significantly aquatic plant diversity reduction in Chang lake were all removed at 2016, the aquatic plants in Yuanxinhu area of Chang lake were investigated in early August, 2018. The results showed that 27 species of aquatic plants were identified including nine emerged plants, eight floating plants, seven submerged plants and three floating-leaf plants. Biomass of species is ranged from 53.52 g/m²（Eichhornia crassipes Ass.） to 2407.71 g/m²（Myriophyllum spicatum Ass.） in nine existing associations. The Zizania latifolia+Trapa natans Ass. and the Myriophyllum spicatum+Trapa natans Ass. possessed the higher Shannon-Wiener species diversity indices（H′） and Simpson species diversity indices（D）,their H′ and D was 1.870, 0.680 and 1.844, 0.815 respectively. Compared with the previous results and data of Chang lake from 1985 to 2015, the demolition of large-scale enclosure culture has a good promoting effect on the improvement of the diversity and community structure of the living aquatic plants of Chang lake, and the ecology of Chang lake is gradually recovering.

Key words: enclosure culture, aquatic plant, diversity, Chang lake

CLC Number:

S917

TAN Feng-xia, LUO Jing-bo, GONG Sen-sen, ZHOU Wen-bo, XIANG Miao-miao, MENG Jian-xue, CHAI Yi. Effects of removal of the breeding seine on aquatic plant diversity in Yuanxinhu area of Chang lake[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(21): 92-96.

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