Survey of water quality and benthos in the Yellow River Basin
FU Xiao-cheng1,2, YE Lin1, XU Yao-yang1,2, CAI Qing-hua1
1. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, Hubei, P. R. China; 2. Graduate University of Chinese Academy of Sciences, Beijing, 100039, P. R. China
In May 2005, we surveyed water quality and benthos of the Yellow River basin in 42 sites. The results show that water quality of most part of the Yellow River basin is seriously contaminated, especially the index of total nitrogen. The main stem up Lanzhou is lightly polluted compare to stem down Lanzhou and tributaries. In these sites, we collected 90 taxa totally, which belong to 60 genera in 23 families in five phyla. Among them, there are 67 aquatic insects (74.4%), 15 oligochaetes (16.7%), five mollusks (5.6%), one crustacean (2.2%) and one nematode (2.2%).The main components of benthos are Chironomus and Oligochaeta groups. Average density and biomass in the Yellow River basin are 411.1 ind·m-2 and 1520.1 mg·m-2. The density and biomass in the main stem are obviously lower than the tributaries. Compare to the data from 1958 and 1982, the taxa number is almost similar, but the composition varies greatly and the density and biomass are comparatively lower in this survey.
傅小城1,2, 叶麟1, 徐耀阳1,2, 蔡庆华1*. 黄河主要水系水环境与底栖动物调查研究[J]. , 2010, 29(1): 1-7.
FU Xiao-cheng1,2, YE Lin1, XU Yao-yang1,2, CAI Qing-hua1. Survey of water quality and benthos in the Yellow River Basin. , 2010, 29(1): 1-7.
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