Degradation of Populus euphratica community in the lower reaches of the Tarim River, Xinjiang, China

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Degradation of Populus euphratica community in the lower reaches of the Tarim River, Xinjiang, China
	Liu ; Chen ; Chen ; Zhang ; Li ; JZ ; YN ; YJ ; N ; WH
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2005
卷号	17 期号:5 页码:740-747
关键词	RIPARIAN ZONES NEW-ENGLAND VEGETATION PATTERNS LANDSCAPE PLANTS USA GERMINATION FLOODPLAIN DYNAMICS
ISSN号	1001-0742
通讯作者	Chen, YN, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
中文摘要	To investigate the relationships between the degradation of plant community and groundwater level in the lower reaches of the Tarim River, nine monitored sections were set along the main stream, where there had been no runoff for nearly 30 years. The characteristics of plant communities were analyzed. It was found that the coverage of trees gradually decreased along the groundwater depth gradient, while the coverage of shrubs slightly increased rather than decreased at first and then gradually decreased, and the coverage of herbs steadily decreased at the beginning and then quickly decreased. The species diversity and species richness of both herbs and woody plants showed obvious degrading trends, while the variations in species evenness were slight. The degrading sequences of species were related to their physiological and ecological characteristics, especially their sensitivity to changes of groundwater table. The herbs with shallow roots first degenerated or disappeared when the groundwater table fell, and then did the deep-rooted herbs, and finally the trees and shrubs with strong tolerance to drought degenerated. The Populus euphratica communities showed typical degrading characteristics, namely the dominant species Populus euphratica remained its dominant status during the degradation. Overall, the existence of strongly tolerant-drought species was the obvious indication of plant species degradation; while simplification of community structure and the decrease of species richness were the obvious indication of plant community degradation.
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/10508]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Liu,Chen,Chen,et al. Degradation of Populus euphratica community in the lower reaches of the Tarim River, Xinjiang, China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2005,17(5):740-747.
APA	Liu.,Chen.,Chen.,Zhang.,Li.,...&WH.(2005).Degradation of Populus euphratica community in the lower reaches of the Tarim River, Xinjiang, China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,17(5),740-747.
MLA	Liu,et al."Degradation of Populus euphratica community in the lower reaches of the Tarim River, Xinjiang, China".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 17.5(2005):740-747.