Effects of hydrologic modifications to riparian plant communities in a large river system in northern China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Effects of hydrologic modifications to riparian plant communities in a large river system in northern China
	Xiu, Chen; Gerisch, Michael; Ilg, Christiane; Henle, Klaus; Ouyang, Zhiyun
刊名	ECOLOGICAL RESEARCH
	2015-05
卷号	30 期号:3 页码:461-469
关键词	Riparian vegetation Flow disconnection Floodplains Haihe River basin Grassland
英文摘要	Hydrologic modifications to rivers caused by anthropogenic activity have major impacts on riparian ecosystems. Alterations to the hydrologic regime and their interactions with natural environmental parameters exert selective pressures on riparian vegetation, resulting in adaptations to specific flow attributes. However, few studies have attempted to detect these effects under multiple hydrologic conditions, especially for rivers in semi-dry and semi-humid regions. Using the "space-for-time substitution" method, we investigated the effects of hydrologic modifications to the riparian plant community along the Yongding River of northern China, by comparing community structure metrics (diversity, plant moisture affinity group, and lifespan) and a function metric (biomass) under three streamflows (perennial, seasonal and dried-up). Among these streamflows, seasonal flow reaches had the greatest plant diversity. Responses of plant moisture group and lifespan were inconsistent in different hydrologic stages, although they varied significantly (P < 0.01). Annuals and biennials greatly increased from perennial to seasonal streamflow (similar to 59 %), while perennials decreased (similar to 41 %). However, from seasonal to dried-up flow, the percentage of mesics and xerics increased by 12.8 and 11.8 %, respectively, while hydrics decreased dramatically (by 24.6 %). Perennial flow had significantly greater aboveground biomass (P < 0.05) than the other two flows. Hydrologic conditions and their related soil nutrients were the main driving factors of community structure and function, which explained 21.0 and 18.0 % of variation, respectively. These findings reveal the response process of the riparian plant community during hydrologic modification from perennial to dried-up streamflow.
研究领域[WOS]	Ecology
WOS记录号	WOS:000354817700006
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32297]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Xiu, Chen,Gerisch, Michael,Ilg, Christiane,et al. Effects of hydrologic modifications to riparian plant communities in a large river system in northern China[J]. ECOLOGICAL RESEARCH,2015,30(3):461-469.
APA	Xiu, Chen,Gerisch, Michael,Ilg, Christiane,Henle, Klaus,&Ouyang, Zhiyun.(2015).Effects of hydrologic modifications to riparian plant communities in a large river system in northern China.ECOLOGICAL RESEARCH,30(3),461-469.
MLA	Xiu, Chen,et al."Effects of hydrologic modifications to riparian plant communities in a large river system in northern China".ECOLOGICAL RESEARCH 30.3(2015):461-469.