检索结果相关分组
- 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
- 鄱阳湖天然湿地开垦前后土壤C、N、P化学计量特征研究
- 作者： 付姗 来源：江西师范大学 年份：2015 文献类型 ：学位论文 关键词： 有机碳不同组分 化学计量学 鄱阳湖 围垦 湿地
- 描述：年在鄱阳湖天然湿地典型分布区—赣江三角洲前沿南矶湿地国家级自然保护区,沿水位梯度采集7种不同植物群落类型下土壤,对有机碳、全氮、全磷含量进行测定;在鄱阳湖周边的鄱阳县、余干县、星子县共进行了6个不同围垦
- 全文：年在鄱阳湖天然湿地典型分布区—赣江三角洲前沿南矶湿地国家级自然保护区,沿水位梯度采集7种不同植物群落类型下土壤,对有机碳、全氮、全磷含量进行测定;在鄱阳湖周边的鄱阳县、余干县、星子县共进行了6个不同围垦
- 鄱阳湖天然湿地开垦前后土壤C、N、P化学计量特征研究
- 作者： 付姗 来源：江西师范大学 年份：2015 文献类型 ：学位论文 关键词： 有机碳不同组分 化学计量学 鄱阳湖 围垦 湿地
- 描述：年在鄱阳湖天然湿地典型分布区—赣江三角洲前沿南矶湿地国家级自然保护区,沿水位梯度采集7种不同植物群落类型下土壤,对有机碳、全氮、全磷含量进行测定;在鄱阳湖周边的鄱阳县、余干县、星子县共进行了6个不同围垦
- 全文：年在鄱阳湖天然湿地典型分布区—赣江三角洲前沿南矶湿地国家级自然保护区,沿水位梯度采集7种不同植物群落类型下土壤,对有机碳、全氮、全磷含量进行测定;在鄱阳湖周边的鄱阳县、余干县、星子县共进行了6个不同围垦
- 鄱阳湖天然湿地开垦前后土壤C、N、P化学计量特征研究
- 作者： 付姗 来源：江西师范大学 年份：2015 文献类型 ：学位论文 关键词： 有机碳不同组分 化学计量学 鄱阳湖 围垦 湿地
- 描述：年在鄱阳湖天然湿地典型分布区—赣江三角洲前沿南矶湿地国家级自然保护区,沿水位梯度采集7种不同植物群落类型下土壤,对有机碳、全氮、全磷含量进行测定;在鄱阳湖周边的鄱阳县、余干县、星子县共进行了6个不同围垦
- 全文：年在鄱阳湖天然湿地典型分布区—赣江三角洲前沿南矶湿地国家级自然保护区,沿水位梯度采集7种不同植物群落类型下土壤,对有机碳、全氮、全磷含量进行测定;在鄱阳湖周边的鄱阳县、余干县、星子县共进行了6个不同围垦
- 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.
- 鄱阳湖越冬水鸟栖息地评价*
- 作者： 夏少霞 刘观华 于秀波 刘宇 来源：湖泊科学 年份：2015 文献类型 ：期刊 关键词： 栖息地重要性 水鸟栖息地 鄱阳湖 模糊综合评价法
- 描述：参照国际重要鸟区的评定标准,建立基于种群数量综合因子、物种多样性因子、保护物种综合因子的水鸟栖息地重要性评价因子集,采用模糊综合法评估鄱阳湖62个子湖泊作为越冬水鸟栖息地的重要性.结果表明:(1
- 全文：参照国际重要鸟区的评定标准,建立基于种群数量综合因子、物种多样性因子、保护物种综合因子的水鸟栖息地重要性评价因子集,采用模糊综合法评估鄱阳湖62个子湖泊作为越冬水鸟栖息地的重要性.结果表明:(1