| 摘要: |
| 根据1993，1994年蚌湖与吴城修水站水位同步观测数据及1951－1987年该站的水位资料，通过地形调查、对比研究及数学分析，得出结论：典型湿地与鄱阳湖的水位存在高水位一致性、中水位相关性、低水位不相关性，此规律是由湿地地形与鄱阳湖水情所决定；三峡工程运行后湿地不会干涸；湿地水位相对鄱阳湖滞后效应不明显；利用湿地与鄱阳湖的水位关系及其历史水位资料等，可以对湿地的淹露状况进行定量分析。 |
| 关键词: 鄱阳湖 湿地 水位 滩地淹露 |
| DOI： |
| 分类号: |
| 基金项目:国家“八五”攻关课题!85-16-06-03 |
附件 |
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| ANALYSIS ON WATER-LEVEL RELATIONSHIPS BETWEEN BANGHU DEPRESSION AND POYANG LAKE AND ITS SUBMERSION AND EMERSION OF BOTTOMLAND |
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Hu Chunhua, Jiang Jiahu, Zhu hahong
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Nanjing Institute of Geography and Limnology Chinese Academy of Sciences, Nanjing 210008
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| Abstract: |
| The Poyang Lake typical wetland, an international important wetland, is the largest overwintering area and their main habitats for rare birds in China. The hydrologic regime, especially water-level relationships between the wetland and Poyang Lake, the issue that the depressions will become dry or not after the operation of Three Gorge Project, its submersion and emersion of the bottomland, should be mastered so that the knowledge can be applied for exploitation and protection of the lake and the wetland. Based on contrast water-level courses of Banghu with those of Xiushui from 1993 to 1994, and referred to the wetland topography, by mathematical analysis methods, conclusions have been made as follows: (1) the wetland water level (WWL) is the same as Poyang Lake water level (PWL) during high water-level period, WWL is positive related with PWL during middle water-level period, WWL is irrelated with PWL during low water-level period; (2) the rules mentioned above are controlled by the topography and water-level fluctuations of Poyang Lake; (3) depressions below 13.8m in the wetland will not become dry after the operation of Three Gorge Project; (4) it is not striking that water-level residence-time effect of the wetland compares with Poyang Lake; (5) based on rules mentioned above and
historical hydrologic data, submersion-emersion days and areas of depressions in the wetland can be calculated at different elevations or water level attitudes. |
| Key words: Poyang Lake, Wetland, Water-level, Bottomland submersion-emersion |
