检索结果相关分组
- 鄱阳湖灰化苔草浸泡液对铜绿微囊藻的化感作用
- 作者： 李林 陈峰 赵荣芳 来源：环境科学与技术 年份：2016 文献类型 ：期刊 关键词： 浸泡液 铜绿微囊藻 化感抑藻 灰化苔草
- 描述：在室内控温、控光条件下,研究鄱阳湖洲滩优势植物灰化苔草浸泡液对铜绿微囊藻生长的影响。试验得到,灰化苔草浸泡液对铜绿微囊藻的抑制作用较高;枯灰化苔草浸泡液对铜绿微囊藻的抑制率在81%~88%,随浸泡液
- 全文：在室内控温、控光条件下,研究鄱阳湖洲滩优势植物灰化苔草浸泡液对铜绿微囊藻生长的影响。试验得到,灰化苔草浸泡液对铜绿微囊藻的抑制作用较高;枯灰化苔草浸泡液对铜绿微囊藻的抑制率在81%~88%,随浸泡液
- 柳永周邦彦姜夔三家词的比较
- 作者： 尹占华 来源：甘肃广播电视大学学报 年份：2004 文献类型 ：期刊 关键词： 语言 表现手法 柳词 词调 姜词 周词
- 描述：柳永、周邦彦和姜夔的词是宋代婉约词中最有影响的三大家,而三家词的不同则正好体现了宋代婉约词的发展轨迹.本文从三个方面分析了三家词的差别,即词调、表现手法和语言.在词调方面:柳永词新调多而音乐通俗
- 全文：柳永、周邦彦和姜夔的词是宋代婉约词中最有影响的三大家,而三家词的不同则正好体现了宋代婉约词的发展轨迹.本文从三个方面分析了三家词的差别,即词调、表现手法和语言.在词调方面:柳永词新调多而音乐通俗
- 碟形湖在鄱阳湖湿地生态系统的作用和意义
- 作者： 胡振鹏 张祖芳 刘以珍 纪伟涛 葛刚 来源：江西水利科技 年份：2015 文献类型 ：期刊 关键词： 生物多样性 碟形湖 鄱阳湖 湿地
- 描述：灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
- 全文：灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
- 碟形湖在鄱阳湖湿地生态系统的作用和意义
- 作者： 胡振鹏 张祖芳 刘以珍 纪伟涛 葛刚 来源：江西水利科技 年份：2015 文献类型 ：期刊 关键词： 生物多样性 碟形湖 鄱阳湖 湿地
- 描述：灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
- 全文：灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
- 三峡工程蓄水对鄱阳湖水情的影响格局及作用机制分析
- 作者： 赖锡军 姜加虎 黄群 来源：水力发电学报 年份：2012 文献类型 ：期刊 关键词： 影响机制 环境水力学 鄱阳湖 三峡蓄水影响 湿地水文 水动力学模型
- 描述：鄱阳湖近年多次出现罕见的枯水水情,且恰逢三峡工程开始试验性蓄水,三峡工程对鄱阳湖的影响因此广受关注和议论。为明确三峡蓄水对鄱阳湖的影响及其作用机制,本文运用长江中游江湖耦合水动力学模型,以2006年
- 全文：鄱阳湖近年多次出现罕见的枯水水情,且恰逢三峡工程开始试验性蓄水,三峡工程对鄱阳湖的影响因此广受关注和议论。为明确三峡蓄水对鄱阳湖的影响及其作用机制,本文运用长江中游江湖耦合水动力学模型,以2006年
- 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.
- 发挥税收导向作用 推进鄱阳湖生态经济建设
- 作者： 刘小康 来源：理论导报 年份：2010 文献类型 ：期刊 关键词： 可持续发展 生态环境 资源优势 导向作用 生态经济建设 经济发展 税收政策 生态经济区建设 江西 大力发展
- 描述：建设鄱阳湖生态经济区的本质内涵,就是在发展中保护生态,在保护生态中加快发展,立足江西实际,顺应时代发展潮流,实现经济发展与生态保护的统一。江西有生态资源优势,森林覆盖率达53.3%,列全国第二位;拥有淡水面积约占全国淡水总面积的9.3%,人均占有的水面积是全国平均值的3倍。但我省经济发展在全国相对落后,随着工业化、城镇化进程加快,鄱阳湖地区资源、能源需求日益增加,生态环境
- 全文：建设鄱阳湖生态经济区的本质内涵,就是在发展中保护生态,在保护生态中加快发展,立足江西实际,顺应时代发展潮流,实现经济发展与生态保护的统一。江西有生态资源优势,森林覆盖率达53.3%,列全国第二位;拥有淡水面积约占全国淡水总面积的9.3%,人均占有的水面积是全国平均值的3倍。但我省经济发展在全国相对落后,随着工业化、城镇化进程加快,鄱阳湖地区资源、能源需求日益增加,生态环境
- 蔓荆在鄱阳湖风沙区的适应性及防风作用研究
- 作者： 杨洁 左长清 来源：水土保持研究 年份：2004 文献类型 ：期刊 关键词： 蔓荆 防风作用 风沙化土地
- 描述： cm高度的风速分别降低33.7%和18%;覆盖度为30%时,起沙风速增幅达54%;风沙流结构明显改变,贴地层沙量显著增加,使大部分沙粒沉降于地表,减少了沙丘的前移速度;蔓荆可广泛用作于我国南方江、河、湖滨沿岸以及海岸线的防风固沙植物.
- 全文： cm高度的风速分别降低33.7%和18%;覆盖度为30%时,起沙风速增幅达54%;风沙流结构明显改变,贴地层沙量显著增加,使大部分沙粒沉降于地表,减少了沙丘的前移速度;蔓荆可广泛用作于我国南方江、河、湖滨沿岸以及海岸线的防风固沙植物.