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引用本文:梁婕,彭也茹,郭生练,李晓东,黄璐,李忠武,曾光明,肖义,石林.基于水文变异的东洞庭湖湿地生态水位研究.湖泊科学,2013,25(3):330-334. DOI:10.18307/2013.0303
LIANG Jie,PENG Yeru,GUO Shenglian,LI Xiaodong,HUANG Lu,LI Zhongwu,ZENG Guangming,XIAO Yi,SHI Lin.Determination of ecological water-level in the eastern Lake Dongting with hydrological alterations. J. Lake Sci.2013,25(3):330-334. DOI:10.18307/2013.0303
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基于水文变异的东洞庭湖湿地生态水位研究
梁婕1,2, 彭也茹1,2, 郭生练3, 李晓东1,2, 黄璐1,2, 李忠武1,2, 曾光明1,2, 肖义4, 石林5
1.湖南大学环境科学与工程学院, 长沙 410082;2.环境生物与控制教育部重点实验室 湖南大学, 长沙 410082;3.武汉大学水资源与水电工程科学国家重点实验室, 武汉430072;4.湖南省洞庭湖水利工程管理局, 长沙 410007;5.湖南省水利水电科学研究所, 长沙 410007
摘要:
东洞庭湖湿地具有重要生态意义.基于东洞庭湖湿地退化的现实,认为气候变化、人类活动等因素造成水文序列发生突变,湿地生态系统适应突变前的水文环境.以城陵矶水文站1952-2006年月平均水位序列为分析对象,通过滑动T检验法找到序列的最可能突变点,以该点对序列进行分割,以变异前的月平均水位序列为对象,拟合月平均水位的最适合概率分布函数,认为概率最高处的月平均水位是区域生态水位.研究结果表明,城陵矶水文站的水位时间序列发生显著变化;与其他方法相比,本文确定的东洞庭湖湿地生态水位具有一定的合理性,对东洞庭湖湿地生态系统修复具有一定的指导意义.
关键词:  湿地  水位调控  生态工程  洞庭湖  三峡工程
DOI:10.18307/2013.0303
分类号:
基金项目:国务院三峡委员会项目(SX2010-026);国家自然科学基金项目(51039001,51009063,51109016);湖南大学青年教师成长计划项目;广州白云湖水质改善项目(BYHGLC-2010-02);新世纪优秀人才支持计划项目(NCET-08-0181)联合资助
Determination of ecological water-level in the eastern Lake Dongting with hydrological alterations
LIANG Jie1,2, PENG Yeru1,2, GUO Shenglian3, LI Xiaodong1,2, HUANG Lu1,2, LI Zhongwu1,2, ZENG Guangming1,2, XIAO Yi4, SHI Lin5
1.College of Environment Science and Engineering, Hunan University, Changsha 410082, P.R.China;2.Key Laboratory of Environmental Biology and Pollution ControlHunan University, Ministry of Education, Changsha 410082, P.R.China;3.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, P.R.China;4.Lake Dongting Water Resources Administration Bureau of Hunan Province, Changsha 410007, P.R.China;5.Hunan Water Resources and Hydropower Research Institute, Changsha 410007, P.R.China
Abstract:
The eastern Lake Dongting wetland is of great importance worldwide.It has been suffered from progressive degradation lately.Wetland ecosystem is considered to be adapted to hydrological sequence before alteration caused by climate changes and human related activities.Average monthly water-level of three hydrological stations in the Lake Dongting region were analyzed in this study to obtain ecological water-level.The point of the highest T statistic value calculated by moving T-test method was considered to be the alteration point.The sequence was then divided into two parts.The subsequence before alteration point was used to find the most fitted probability distribution function.The ecological water-level was considered to be the average monthly water-level of the highest probability of the probability distribution function.The results indicate that average monthly water-level has been alternated, and the ecological water-level determined in this paper is reasonable and can provide some guides to the restoration of the Lake Dongting wetland.
Key words:  Wetland  water-level regulation  ecological engineering  Lake Dongting  Three Gorges Project
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