Ecological functions of riverbed structures with different strengths in the Xiaojiang River basin
Na ZHAO1,Zhaoyin WANG1(),Baozhu PAN2,Zhiwei LI1,Xuehua DUAN3
1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
2. Changjiang River Scientific Research Institute, Wuhan 430010, China
3. Jiangyin Water Resources and Agricultural Machine Bureau, Jiangyin 214431, China
The Xiaojiang River basin is a typical dry-hot valley, characterized by high temperatures, little rain and serious soil erosion. The ecology is very fragile there. The ecology was evaluated using field measurements, sampling and indoor identification. Macroinvertebrates were used as indicators to assess the ecology of rivers with different riverbed-structure strengths in this basin using the Shengou River, Diaoga River and Jiangjia River with field investigations conducted from 2005 to 2011. The main purpose was to study the ecology functions of the riverbed structures with different strengths. Shengou River had 56 macroinvertebrate taxa, followed by Diaoga River with 36 taxa and Jiangjia River with 18 taxa. The results show that there is no clear relation between the macroinvertebrate density and riverbed-structure strengths but the biodiversity and the aquatic ecology improve with increasing riverbed-structure strengths, the predator density and biomass also increased to some extent.
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Na ZHAO, Zhaoyin WANG, Baozhu PAN, Zhiwei LI, Xuehua DUAN. Ecological functions of riverbed structures with different strengths in the Xiaojiang River basin. Journal of Tsinghua University(Science and Technology), 2014, 54(5): 584-589.
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2014, Vol. 54 
),潘保柱2,李志威1,段学花3
