Arid
DOI10.1007/s10113-015-0822-1
Climatic and human drivers of recent lake-level change in East Juyan Lake, China
Xiao, Shengchun1; Peng, Xiaomei1,2; Tian, Quanyan1,2
通讯作者Xiao, Shengchun
来源期刊REGIONAL ENVIRONMENTAL CHANGE
ISSN1436-3798
EISSN1436-378X
出版年2016
卷号16期号:4页码:1063-1073
英文摘要

Drying of an inland river’s terminal lake in arid regions is an important signal of environmental degradation in downstream regions. A long-term, high-resolution understanding of the lake’s retreat and expansion and the driving mechanisms will inform future adaptive water management strategies, ecosystem restoration, and government decision-making in the context of a growing water scarcity in the inland river basin. The shrubs that grow along the shore of a lake often provide evidence of lake retreat or expansion. The chronological results showed that the earliest germination dates of the lakeshore shrubs, tamarisk, were in 1901, 1943, 1966, 2009, and 1990 from the higher terrace to the lower terrace of East Juyan Lake, a terminal lake of China’s Heihe River. Coupled with river and lake hydrological data, six obvious lake’s fluctuations were identified: shrinkage from 1900 to 1940s and during the early 1990s, expansion and retreat in the late 1950s and early 1970s, continued expansion from 2002 to 2008, and stabilization at a water area of around 40 km(2) from 2009 to the present. The water elevation in the 1900s was below 905 m a.s.l., resulting in a water area < 80 km(2), but decreased to 40 km(2) after 1960 and dried up completely by the 1990s. By analysing climatic and hydrological records since 1950, tree-ring climate proxy data, river runoff outside the observation period, and water resource consumption in the middle and lower reaches of the Heihe River, we found that the periodic expansion and retreat of East Juyan Lake was influenced by both climate change and human activities, but especially by human activities. The lake’s recent recovery and stability was achieved by government policy designed to provide environmental flows to the lake.


英文关键词Dendrochronology Lake drying Juyan Lake Heihe River Basin Tamarix ramosissima
类型Article
语种英语
国家Peoples R China
收录类别SCI-E ; SSCI
WOS记录号WOS:000373310600012
WOS关键词HEIHE RIVER-BASIN ; TREE-RINGS ; NORTHWESTERN CHINA ; WASHINGTON-STATE ; QILIAN MOUNTAINS ; VEGETATION ; COLONIZATION ; SHORELINE ; DESERT ; QUEBEC
WOS类目Environmental Sciences ; Environmental Studies
WOS研究方向Environmental Sciences & Ecology
来源机构中国科学院西北生态环境资源研究院
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/195915
作者单位1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Ecohydrol Inland River Basin, 320 Donggang West Rd, Lanzhou 730000, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Xiao, Shengchun,Peng, Xiaomei,Tian, Quanyan. Climatic and human drivers of recent lake-level change in East Juyan Lake, China[J]. 中国科学院西北生态环境资源研究院,2016,16(4):1063-1073.
APA Xiao, Shengchun,Peng, Xiaomei,&Tian, Quanyan.(2016).Climatic and human drivers of recent lake-level change in East Juyan Lake, China.REGIONAL ENVIRONMENTAL CHANGE,16(4),1063-1073.
MLA Xiao, Shengchun,et al."Climatic and human drivers of recent lake-level change in East Juyan Lake, China".REGIONAL ENVIRONMENTAL CHANGE 16.4(2016):1063-1073.
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