干旱区生态环境知识资源中心(Arid): An exploratory analysis of benthic macroinvertebrates as indicators of the ecological status of the Upper Yellow and Yangtze Rivers

Arid

	An exploratory analysis of benthic macroinvertebrates as indicators of the ecological status of the Upper Yellow and Yangtze Rivers
	Pan Baozhu; Wang Zhaoyin; Li Zhiwei; Yu Guoan; Xu Mengzhen; Zhao Na; Brierley Gary
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2013
卷号	23 期号:5 页码:871-882
英文摘要	This study presents findings of the first systematic analysis of aquatic biotic assemblages in the source region of the Yellow and Yangtze Rivers. It provides an initial basis with which to select representative organisms as indicators to assess the aquatic ecological status of rivers in this region. Macroinvertebrates are considered to be good indicators of long-term environmental changes due to their restricted range and persistence over time. Field investigations of macroinvertebrates were conducted in August 2009 in the source region of the Yellow River, and in July 2010 in the source region of the Yangtze River. Altogether 68 taxa of macroinvertebrates belonging to 29 families and 59 genera were identified. Among them were 8 annelids, 5 mollusks, 54 arthropods and 1 other animal. In the source region of the Yellow River, taxa number, density and biomass of macroinvertebrates were 50, 329 individuals m~(-2) and 0.3966 g dry weight m~(-2), respectively. Equivalent figures for the source region of the Yangtze River were 29, 59 individuals m~(-2) and 0.0307 g dry weight m~(-2). The lower benthic animal resources in the source region of the Yangtze River are ascribed to higher altitude, higher sediment concentration and wetland degradation. Preliminary findings of this exploratory study indicate that hydroelectric power stations had a weak impact on benthic dwellers but wetland degradation caused by a series of human activities had a catastrophic impact on survival of macroinvertebrates. Ecological protection measures such as conservative grazing and vegetation management are required to minimize grassland degradation and desertification, and reduce soil erosion rate and river sediment discharge.
英文关键词	macroinvertebrate biodiversity standing crops functional feeding group Yellow River source zone Yangtze River source zone
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Zoology
CSCD记录号	CSCD:5021276
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335299
作者单位	Pan Baozhu, Changjiang River Scientific Research Institute, Wuhan, Hubei 430010, China.; Wang Zhaoyin, Tsinghua University, State Key Laboratory of Hydroscience and Engineering, Beijing 100084, China.; Li Zhiwei, Tsinghua University, State Key Laboratory of Hydroscience and Engineering, Beijing 100084, China.; Xu Mengzhen, Tsinghua University, State Key Laboratory of Hydroscience and Engineering, Beijing 100084, China.; Zhao Na, Tsinghua University, State Key Laboratory of Hydroscience and Engineering, Beijing 100084, China.; Yu Guoan, Institute of Geographic Sciences and Natural Resources Research, CAS, Key Laboratory of Water Cycle and Related Land Surface Processes, CAS, Beijing 100101, China.; Brierley Gary, School of Environment, University of Auckland, Auckland, 92019, New Zealand.
推荐引用方式 GB/T 7714	Pan Baozhu,Wang Zhaoyin,Li Zhiwei,et al. An exploratory analysis of benthic macroinvertebrates as indicators of the ecological status of the Upper Yellow and Yangtze Rivers[J],2013,23(5):871-882.
APA	Pan Baozhu.,Wang Zhaoyin.,Li Zhiwei.,Yu Guoan.,Xu Mengzhen.,...&Brierley Gary.(2013).An exploratory analysis of benthic macroinvertebrates as indicators of the ecological status of the Upper Yellow and Yangtze Rivers.Journal of Geographical Sciences,23(5),871-882.
MLA	Pan Baozhu,et al."An exploratory analysis of benthic macroinvertebrates as indicators of the ecological status of the Upper Yellow and Yangtze Rivers".Journal of Geographical Sciences 23.5(2013):871-882.