欢迎访问鄱阳湖地域文化特色库!
全部 图书 图片 报纸 期刊 新闻 视频 学位论文 会议论文
检索结果相关分组
相关搜索词
那人,那鸟,那鄱阳湖
作者: 刘军  来源:黄河黄土黄种人(水与中国) 年份:2014 文献类型 :期刊
描述:许久没有见面的朋友发来信:“一起去鄱阳湖数天鹅吧!”这个年少时就许下的约定,被岁月不痛不痒、悄无声息地改变,而此时我们要去完成这个比时间更顽固的约定。 走吧,看一看那些体态优美的鸟,听一听它们
全文:许久没有见面的朋友发来信:“一起去鄱阳湖数天鹅吧!”这个年少时就许下的约定,被岁月不痛不痒、悄无声息地改变,而此时我们要去完成这个比时间更顽固的约定。 走吧,看一看那些体态优美的鸟,听一听它们
鄱阳湖生态经济区地方环境立法问题探析
作者: 简颖慧 田建鑫  来源:华章 年份:2011 文献类型 :期刊 关键词: 环境保护  地方环境立法  鄱阳湖生态经济区 
描述:保护鄱阳湖生态经济区的环境除了要有政府政策上的引导之外,还必须要有健全的法律作保障。虽然国家对生态环境问题有相关的立法,但这些立法能起到的效果却是乎甚微。本文以地方环境立法为切入点,重点分析了目前
全文:保护鄱阳湖生态经济区的环境除了要有政府政策上的引导之外,还必须要有健全的法律作保障。虽然国家对生态环境问题有相关的立法,但这些立法能起到的效果却是乎甚微。本文以地方环境立法为切入点,重点分析了目前
鄱阳湖水体细菌物种多样性研究
作者: 吴兰  来源:南昌大学 年份:2009 文献类型 :学位论文 关键词: 鄱阳湖  细菌多样性  16SrDNA文库  限制性片段长度多态性分析 
描述:的α-,β-,γ-变形细菌门,放线菌门,拟杆菌门,OP10,蓝细菌,疣菌门,硝化螺旋菌门以及未知分类地位细菌。 ④.南湖丰水期(2007年5月样)水域的细菌分属于以下八大细菌类群中:变形菌门
全文:的α-,β-,γ-变形细菌门,放线菌门,拟杆菌门,OP10,蓝细菌,疣菌门,硝化螺旋菌门以及未知分类地位细菌。 ④.南湖丰水期(2007年5月样)水域的细菌分属于以下八大细菌类群中:变形菌门
鄱阳湖水体细菌物种多样性研究
作者: 吴兰  来源:南昌大学 年份:2009 文献类型 :学位论文 关键词: 鄱阳湖  细菌多样性  16SrDNA文库  限制性片段长度多态性分析 
描述:的α-,β-,γ-变形细菌门,放线菌门,拟杆菌门,OP10,蓝细菌,疣菌门,硝化螺旋菌门以及未知分类地位细菌。 ④.南湖丰水期(2007年5月样)水域的细菌分属于以下八大细菌类群中:变形菌门
全文:的α-,β-,γ-变形细菌门,放线菌门,拟杆菌门,OP10,蓝细菌,疣菌门,硝化螺旋菌门以及未知分类地位细菌。 ④.南湖丰水期(2007年5月样)水域的细菌分属于以下八大细菌类群中:变形菌门
鄱阳湖水体细菌物种多样性研究
作者: 吴兰  来源:南昌大学 年份:2009 文献类型 :学位论文 关键词: 鄱阳湖  细菌多样性  16SrDNA文库  限制性片段长度多态性分析 
描述:的α-,β-,γ-变形细菌门,放线菌门,拟杆菌门,OP10,蓝细菌,疣菌门,硝化螺旋菌门以及未知分类地位细菌。 ④.南湖丰水期(2007年5月样)水域的细菌分属于以下八大细菌类群中:变形菌门
全文:的α-,β-,γ-变形细菌门,放线菌门,拟杆菌门,OP10,蓝细菌,疣菌门,硝化螺旋菌门以及未知分类地位细菌。 ④.南湖丰水期(2007年5月样)水域的细菌分属于以下八大细菌类群中:变形菌门
赣北鄱阳湖地区土塘剖面第四纪红土地球化学特征及古气候意义
作者: 凌超豪 龙进 贾玉连 洪祎君 徐传奇 王鹏岭  来源:古地理学报 年份:2015 文献类型 :期刊 关键词: 第四纪  赣北  常量元素  古气候演变  鄱阳湖地区 
描述:意义。(1)土塘剖面粒度组分均一,常量元素含量相近,风化淋溶强烈。(2)土塘剖面各地层间化学风化强度存在差异:下蜀黄土层为初期的去Na、Ca阶段;均质红土层为中期的去K阶段;网纹红土层由去K阶段向去
全文:意义。(1)土塘剖面粒度组分均一,常量元素含量相近,风化淋溶强烈。(2)土塘剖面各地层间化学风化强度存在差异:下蜀黄土层为初期的去Na、Ca阶段;均质红土层为中期的去K阶段;网纹红土层由去K阶段向去
赣北鄱阳湖地区土塘剖面第四纪红土地球化学特征及古气候意义
作者: 凌超豪 龙进 贾玉连 洪祎君 徐传奇 王鹏岭  来源:古地理学报 年份:2015 文献类型 :期刊 关键词: 第四纪  赣北  常量元素  古气候演变  鄱阳湖地区 
描述:意义。(1)土塘剖面粒度组分均一,常量元素含量相近,风化淋溶强烈。(2)土塘剖面各地层间化学风化强度存在差异:下蜀黄土层为初期的去Na、Ca阶段;均质红土层为中期的去K阶段;网纹红土层由去K阶段向去
全文:意义。(1)土塘剖面粒度组分均一,常量元素含量相近,风化淋溶强烈。(2)土塘剖面各地层间化学风化强度存在差异:下蜀黄土层为初期的去Na、Ca阶段;均质红土层为中期的去K阶段;网纹红土层由去K阶段向去
基于GIS/RS和USLE鄱阳湖流域土壤侵蚀变化
作者: 陆建忠 陈晓玲 李辉 刘海 肖靖靖 殷剑敏  来源:农业工程学报 年份:2011 文献类型 :期刊 关键词: 通用土壤流失方程(USLE)  土壤侵蚀  鄱阳湖流域  产沙量  遥感  水土保持 
描述:上中游和修水上游地区;鄱阳湖流域1990年和2000年大范围土地经受着Ⅰ级度与Ⅱ级轻度侵蚀,其侵蚀面积之和分别占流域面积的97.38%和97.30%;而流域产沙主要来源于Ⅱ级轻度侵蚀和Ⅲ级中度侵蚀
全文:上中游和修水上游地区;鄱阳湖流域1990年和2000年大范围土地经受着Ⅰ级度与Ⅱ级轻度侵蚀,其侵蚀面积之和分别占流域面积的97.38%和97.30%;而流域产沙主要来源于Ⅱ级轻度侵蚀和Ⅲ级中度侵蚀
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.
鄱阳湖退田还湖生态补偿研究(Ⅰ):湿地生态系统服务价值计算
作者: 倪才英 曾珩 汪为青  来源:江西师范大学学报(自然科学版) 年份:2009 文献类型 :期刊 关键词: 鄱阳湖湿地  退田还湖  生态服务价值  生态补偿 
描述:运用影子工程、影子价格、替代花费、条件价值等方法对鄱阳湖湿地生态系统的主要生态服务价值进行了计算,得出结果为:鄱阳湖湿地主要生态功能可分为7类,其中调节径流、生物多样性、调节气候、水分供给和存在价值5种生态服务功能价值处于主要地位,它们占总价值的93%.
全文:运用影子工程、影子价格、替代花费、条件价值等方法对鄱阳湖湿地生态系统的主要生态服务价值进行了计算,得出结果为:鄱阳湖湿地主要生态功能可分为7类,其中调节径流、生物多样性、调节气候、水分供给和存在价值5种生态服务功能价值处于主要地位,它们占总价值的93%.
上页 1 2 3 ... 6 7 8 ... 85 86 87 下页
Rss订阅