Water quality assessment of benthic diatom communities for water quality in the subalpine karstic lakes of Jiuzhaigou, a world heritage site in China

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2016 > Vol13 No.9

	Water quality assessment of benthic diatom communities for water quality in the subalpine karstic lakes of Jiuzhaigou, a world heritage site in China
	OUYANG Li-li; PAN Yang-dong; HUANG Cheng-min; TANG Ya; DU Jie; XIAO Wei-yang
刊名	Journal of Mountain Science
	2016-09
卷号	13 期号:9 页码:1632-1644
关键词	Subalpine karstic lakes Water quality Benthic diatoms Community composition Canonical correspondence analysis
ISSN号	1672-6316
通讯作者	HUANG Cheng-min ; TANG Ya
英文摘要	Jiuzhaigou, characterized by its magnificent waterscapes and subalpine karstic features, is both a World Heritage Site and a World Biosphere Reserve in southwestern China. In recent years, this unique ecosystem has shown signs of stress due to increasing tourism activities within the reserve. The various routine methods, whichmonitor physical and chemical properties, do not fully reflect water quality in the subalpine and alpine lakes, while the indicators using aquatic organisms to evaluate the water qualityor status of the subalpine lakes are poorly reported.Thus, in this study, benthic diatoms from multiple habitats in Jiuzhaigou were sampled and assessed for water quality monitoring.Canonical Correspondence Analysis (CCA) showed that the canonical coefficients for elevation, water temperature and total nitrogen on the first Canonical Correspondence Analysis axis were -0.84, 0.78 and -0.53, respectively, environmental variables associated with the distribution patterns of benthic diatoms. The dominance of diatom taxa indicative of nutrient enrichment indicates a clear trend toward eutrophication in the Pearl Shoal and Colorful Lake, two of the sites mostly visited by tourists. It was observed that the effect of the type of substratum on diatom community composition is not significant in subalpine lakes.The most dominant species in Jiuzhaigou lakes are the genera Achnanthes, Fragilaria, Cymbella, Cocconeis, Diatoma and Denticula. In combination with dominant and sensitive species in the benthic diatom communities,CCA and CA methods can be used to evaluate the impact of human activities on subalpine karstic lakes.The dominance of diatom taxa is indicative of nutrient enrichment and the results of CCA and CA indicate a clear trend toward eutrophication in the Pearl Shoal and Colorful Lake, two of the sites mostly visited by tourists.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17529]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.9
推荐引用方式 GB/T 7714	OUYANG Li-li,PAN Yang-dong,HUANG Cheng-min,et al. Water quality assessment of benthic diatom communities for water quality in the subalpine karstic lakes of Jiuzhaigou, a world heritage site in China[J]. Journal of Mountain Science,2016,13(9):1632-1644.
APA	OUYANG Li-li,PAN Yang-dong,HUANG Cheng-min,TANG Ya,DU Jie,&XIAO Wei-yang.(2016).Water quality assessment of benthic diatom communities for water quality in the subalpine karstic lakes of Jiuzhaigou, a world heritage site in China.Journal of Mountain Science,13(9),1632-1644.
MLA	OUYANG Li-li,et al."Water quality assessment of benthic diatom communities for water quality in the subalpine karstic lakes of Jiuzhaigou, a world heritage site in China".Journal of Mountain Science 13.9(2016):1632-1644.