Increasing shrinkage risk of endorheic lakes in the middle of farming-pastoral ecotone of Northern China

Yanfang Wang; Yanjun Shen; Ying Guo; Bohao Li; Xiaolu Chen; Xiaonan Guo; Haiming Yan

Ecological Indicators (Feb 2022)

Increasing shrinkage risk of endorheic lakes in the middle of farming-pastoral ecotone of Northern China

Yanfang Wang,
Yanjun Shen,
Ying Guo,
Bohao Li,
Xiaolu Chen,
Xiaonan Guo,
Haiming Yan

Affiliations

Yanfang Wang: International Science and Technology Cooperation Base of Hebei Province: Hebei International Joint Research Center for Remote Sensing of Agricultural Drought Monitoring, Hebei Province Key Laboratory of Sustained Utilizationand Development of Water Resources, Hebei GEO University, Shijiazhuang 050031, China
Yanjun Shen: Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Agricultural Water-Saving, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China; College of Advanced Agriculture, University of Chinese Academy of Sciences, Beijing 100049, China; Corresponding author at: Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China.
Ying Guo: Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Agricultural Water-Saving, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
Bohao Li: Academy of Disaster Reduction and Emergency Management, Beijing Normal University, Beijing 100875, China
Xiaolu Chen: Key Laboratory of Agricultural Water Resources, Hebei Key Laboratory of Agricultural Water-Saving, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China
Xiaonan Guo: International Science and Technology Cooperation Base of Hebei Province: Hebei International Joint Research Center for Remote Sensing of Agricultural Drought Monitoring, Hebei Province Key Laboratory of Sustained Utilizationand Development of Water Resources, Hebei GEO University, Shijiazhuang 050031, China
Haiming Yan: International Science and Technology Cooperation Base of Hebei Province: Hebei International Joint Research Center for Remote Sensing of Agricultural Drought Monitoring, Hebei Province Key Laboratory of Sustained Utilizationand Development of Water Resources, Hebei GEO University, Shijiazhuang 050031, China

Journal volume & issue: Vol. 135
p. 108523

Abstract

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Lakes are an important water resource and provide a variety of important ecosystem services for humans. Effective monitoring of lake surface area (LSA) dynamics is critical for sustainable management of water resources, particularly in arid and semi-arid areas. The interannual and intraannual variations of lakes and their impact factors in the middle of the farming-pastoral ecotone of Northern China (M−FPENC) were analyzed. The results showed that a total of 1192 lakes have appeared during the last 20 years, with a total area of approximately 1145.6 km2, with most of them having seasonal and ephemeral water. The LSA in the M−FPENC decreased rapidly during 2000–2019. The annual maximum LSA and number of lakes greater than 1 km2 decreased by 30.04% and 33.00%, respectively. At the intraannual scale, the LSA continued to shrink from April to July, with the lowest value observed in the middle of July, and then gradually recovered. It was found that interannual variations in the lake area mainly depended on the interannual fluctuation in precipitation. The shrinkage of lakes was mainly attributed to the significant increase of land surface evapotranspiration.

Published in Ecological Indicators

ISSN: 1470-160X (Print); 1872-7034 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Science: Biology (General): Ecology
Website: https://www.sciencedirect.com/journal/ecological-indicators

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