鄱阳湖湿地植物繁殖库对水位变化的响应

作者： 李美娟  来源：南昌大学 年份：2015 文献类型 ：学位论文 关键词： 鄱阳湖湿地  水位变化  土壤种子库  芽库  湿地植物繁殖库 

描述：初步的研究,针对湿地植物繁殖库对水位变化的响应规律,分别对康山、蚌湖和南矶山3条样带进行土壤种子库和芽库的研究,结果如下:1)通过幼苗萌发实验,土壤种子库共鉴定出20科36属49种植物,其中优势科有菊科

全文：初步的研究,针对湿地植物繁殖库对水位变化的响应规律,分别对康山、蚌湖和南矶山3条样带进行土壤种子库和芽库的研究,结果如下:1)通过幼苗萌发实验,土壤种子库共鉴定出20科36属49种植物,其中优势科有菊科

鄱阳湖非平稳水位波动及其与长江的交互作用关系

作者： 戴雪 万荣荣 杨桂山  来源：地理学报(英文版) 年份：2015 文献类型 ：期刊 关键词： Yangtze  earlier  seasonal  intensified  downstream  lacustrine  river  representative  flood  dominate 

描述：Seasonal water-level fluctuations(WLF) play a dominate role in lacustrine ecosystems. River-lake interaction is a direct factor in changes of seasonal lake WLF, especially for those lakes naturally connected to upstream and downstream rivers. During the past decade, the modification of WLF in the Poyang Lake(the largest freshwater lake in China) has caused intensified flood and irrigation crises, reduced water availability, compromised water quality and extensive degradation of the lake ecosystem. There has been a conjecture as to whether the modification was caused by its interactions with Yangtze River. In this study, we investigated the variations of seasonal WLF in China’s Poyang Lake by comparing the water levels during the four distinct seasons(the dry season, the rising season, the flood season, and the retreating season) before and after 2003 when the Three Gorge Dam operated. The Water Surface Slope(WSS) was used as a representative parameter to measure the changes in river-lake interaction and its impacts on seasonal WLF. The results showed that the magnitude of seasonal WLF has changed considerably since 2003; the seasonal WLF of the Poyang Lake have been significantly altered by the fact that the water levels both rise and retreat earlier in the season and lowered water levels in general. The fluctuations of river-lake interactions, in particular the changes during the retreating season, are mainly responsible for these variations in magnitude of seasonal WLF. This study demonstrates that WSS is a representative parameter to denote river-lake interactions, and the results indicate that more emphasis should be placed on the decrease of the Poyang Lake caused by the lowered water levels of the Yangtze River, especially in the retreating season.

全文：Seasonal water-level fluctuations(WLF) play a dominate role in lacustrine ecosystems. River-lake interaction is a direct factor in changes of seasonal lake WLF, especially for those lakes naturally connected to upstream and downstream rivers. During the past decade, the modification of WLF in the Poyang Lake(the largest freshwater lake in China) has caused intensified flood and irrigation crises, reduced water availability, compromised water quality and extensive degradation of the lake ecosystem. There has been a conjecture as to whether the modification was caused by its interactions with Yangtze River. In this study, we investigated the variations of seasonal WLF in China’s Poyang Lake by comparing the water levels during the four distinct seasons(the dry season, the rising season, the flood season, and the retreating season) before and after 2003 when the Three Gorge Dam operated. The Water Surface Slope(WSS) was used as a representative parameter to measure the changes in river-lake interaction and its impacts on seasonal WLF. The results showed that the magnitude of seasonal WLF has changed considerably since 2003; the seasonal WLF of the Poyang Lake have been significantly altered by the fact that the water levels both rise and retreat earlier in the season and lowered water levels in general. The fluctuations of river-lake interactions, in particular the changes during the retreating season, are mainly responsible for these variations in magnitude of seasonal WLF. This study demonstrates that WSS is a representative parameter to denote river-lake interactions, and the results indicate that more emphasis should be placed on the decrease of the Poyang Lake caused by the lowered water levels of the Yangtze River, especially in the retreating season.

水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

作者： 冯文娟  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究

作者： 谭志强  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究

水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

作者： 冯文娟  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究

作者： 谭志强  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究

水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

作者： 冯文娟  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究

作者： 谭志强  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究

水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

作者： 冯文娟  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：水位对鄱阳湖湿地灰化薹草生理生态特征的影响研究

鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究

作者： 谭志强  来源：中国科学院大学 年份：2015 文献类型 ：学位论文

描述：鄱阳湖湿地植被时空分布特征及其对水位变化的响应研究