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[1]MA Yan,LI Zhi-ping,CAO Xi-qiang.Study of Land Desertification and Its Driving Mechanism in Ejina Oasis During Recent 200 Years[J].Research of Soil and Water Conservation,2010,17(05):158-162.

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Study of Land Desertification and Its Driving Mechanism in Ejina Oasis During Recent 200 Years

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 05 Page number: 158-162 Column: Public date: 2010-10-20

Title:: Study of Land Desertification and Its Driving Mechanism in Ejina Oasis During Recent 200 Years

Author(s):: MA Yan^1,2, LI Zhi-ping², CAO Xi-qiang³; 1. School of Water Resources and Environment of China University of Geosciences, Beijing 100083, China;
2. School of Resources and Environment, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou 450011, China;
3. He’nan Academy of Land and Resources, Zhengzhou 450053, China

Keywords:: Ejina Oasis; land desertification; driving mechanism

CLC:: X37;X171

DOI:: -

Abstract:: Since the 1950s, the environment of Ejina Region has been deteriorating continually, which has become the study focus. In this study, based on the data of environmental multi-proxy of lake sediments from Tianehu-2 core in Tianehu Lake one of the tail-lakes of Heihe River, and comparative study with the historical document records, the contained information of climate changes and human activities is distilled. According to the results of comparative study between the information recorded by lake sediment and historical document records, evolvement of Ejina Oasis during recent 200 years is divided into 7 phases. Environmental evolution in Ejina Oasis during recent 200 years mainly embodies in two aspects. Firstly, drainage change includes processes of Ejina River shrinking with tracing to the sources and tail lakes drying out and shrinkage. Secondly, oasis desertification constantly increases. The drainage change caused by the interaction of climate changing and human activities has been considered as the driving mechanism of land desertification.

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