期刊
JOURNAL OF HYDROLOGY
卷 525, 期 -, 页码 450-456出版社
ELSEVIER
DOI: 10.1016/j.jhydrol.2015.04.010
关键词
Water level; Anthropogenic activity; Climatic factor; Dongting Lake; Mann-Kendall test
资金
- National Natural Science Foundation of China [51479072, 51009063]
- State Council Three Gorges Project Construction Committee Projects [SX2010-026]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT-13R17]
Understanding the variation regularity of water level and the potential drivers can provide insights into lake conservation and management. In this study, inter- and inner-annual variations of water level in Dongting Lake during the period of 1961-2010 were analyzed to determine whether anthropogenic or climatic factor should be responsible for the variations. The results showed that water level decreased significantly during the period of 1961-1980, while increased significantly during the period of 1981-2002 at the 5% significance level. However, the variation trend of water level after 2002 did not reach a significant level. The variation in the dry season was more obviously than that in the wet season. The date when water level was firstly below 24 m during the period of 2003-2010 appeared about 27 days earlier than usual, and the date was even advanced to mid-September in 2006. As for the duration, water level was below 24 m for about 185 days in the period of 2003-2010 and 20-30 days longer than the other two periods. In conclusion, water level might be influenced by a combination of anthropogenic and climatic factors, with rainfall probably as the main driver responsible for hydrological alteration during the period of 1961-1980 and 1981-2002 while dam construction as the main driver during the period of 2003-2010. Under the circumstance of uncontrollable climate change, effective measures for reservoir operation should be put forward to maintain the ecological integrity and ensure water release and storage capacity of aquatic ecosystems. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据