1) the mid-lower Yangtze Lakes
长江中下游湖泊
1.
Aiming at effective conservation of the deteriorating molluscan fauna, intensive field investigations of freshwater molluscs on the mid-lower Yangtze Lakes were conducted between June, 2003 and May, 2005.
与历史资料相比,长江中下游湖泊软体动物的种类数和特有种数均减少 50%左右,且多数种类的分布范围也明显缩小。
2) shallow lakes in the middle and lower reaches of the Yangtze Rive
长江中下游浅水湖泊
1.
Phosphate release kinetics characteristics of the sediments from shallow lakes in the middle and lower reaches of the Yangtze Rive;
长江中下游浅水湖泊沉积物磷释放动力学
3) middle and lower reaches of the Yangtze River
长江中下游
1.
Fluvial process forecasting for the middle and lower reaches of the Yangtze River;
长江中下游的河床纵剖面演变分析及预测
2.
Several issues on sand excavation planning modification in mainstream channels of the middle and lower reaches of the Yangtze River;
长江中下游干流河道采砂规划修编中几个问题的探讨
3.
Spatial and temporal distribution and climatic characteristics of flood in middle and lower reaches of the Yangtze River in 1849;
1849年长江中下游大水灾的时空分布及天气气候特征
4) the middle and lower reaches of the Yangtze River
长江中下游
1.
Study on ecological flow in the middle and lower reaches of the Yangtze River;
长江中下游河道生态流量研究
2.
The working principle of the acoustic doppler profiler and its applications in the middle and lower reaches of the Yangtze River;
声学多普勒流速剖面仪原理及其在长江中下游的应用
3.
Magnetic properties of sediments in the middle and lower reaches of the Yangtze River;
长江中下游河流沉积物磁性特征初探
5) Middle and lower reaches of the Changjiang River
长江中下游
1.
This paper reports the analytical results of major chemical components of 94 loess samples from the Xiashu loess profile in the middle and lower reaches of the Changjiang River, the major component contents and the weathering intensity of Xiashu loess were compared with those of Luochuan loess from Northwest China.
根据长江中下游三个下蜀土剖面94个样品主要组分元素化学成分的分析结果,结合西北洛川黄土数据资料进行了下蜀土剖面主要元素成分含量和风化程度的分析对比。
2.
In the construction of big graffic bridges across the middle and lower reaches of the Changjiang River,complicated engineering geological problems have occurred,such as fault,soft interlayer,extremesoft rock,karst cave and so on.
在长江中下游跨江特大桥建设中遇到了地震与断裂构造、软弱层带、极软岩、岩溶等复杂的工程地质问题。
6) middle and lower Yangtze River
长江中下游
1.
Absorption pattern of sediment in polluted still waters and control of authigenic pollution in the middle and lower Yangtze River;
长江中下游静态水体污染后底泥吸附方式与内源污染治理
2.
Prediction of riverbed physiognomy evolution and water resources protection for the middle and lower Yangtze River;
长江中下游河床地貌演变与水资源保护的预测研究
3.
The floods and droughts over the middle and lower Yangtze River can be forecasted by means of the ternary commensurable formula in d.
初步估测显示,未来长江中下游大洪水可能发生在2008年和2013年左右,长江上游的大水年和大旱年分别可能发生在2009年和2007年左右。
补充资料：长江中下游平原自然资源
长江中下游平原自然资源
natural resources of Changjiang zhongxiayou plain
ehangiiang zhongxiayou Pingyuan ziran ziyuan长江中下游平原自然资源(natural resou职esofChan却ang而d山e一助wer plain)长江中下游平原位于黄淮海平原以东，江南与东南沿海山地丘陵以北，长江三峡以东地区。主要由长江及其两岸支流冲积而成，包括江汉平原、洞庭湖平原、都阳湖平原、皖中沿江平原、里下河平原及长江三角洲平原，大部分地区海拔低于50米，面积约20万平方千米。全区位于亚热带范围，年均温14~18℃，1月均温O~5.5℃，7月均温27~28℃;年降水量1(XX)~1500毫米，比华北平原多1~2倍，季节分配较均匀;无霜期Zro~270天，〕ro℃积温达45(X)、5以叉)℃。作物可一年两熟，长江以南可发展双季稻连作的三熟制。土层深厚，有机质含量丰富，水田占耕地面积的70%左右。江河沿岸稍高处，土质疏松，排水良好，适宜棉田早作，是中国最重要的粮棉油生产基地。 长江天然水系及纵横交错的人工河渠，使这里成为中国河网密度最大的地区，平均1~2千米/平方千米，其中杭嘉湖平原高达12千米/平方千米。境内湖泊星罗棋布，是中国淡水湖泊分布最稠密地区。中国5大淡水湖泊中有4个分布在这里。它们是都阳湖、洞庭湖、太湖、巢湖。其中太湖地区共有大小湖泊(大于0.5平方千米)189个，水域面积占总面积的8.%%，高于全国湖泊率(0.83)的10倍。湖沼地区有丰富的水生生物资源，是中国水生动植物分布最广、产量最丰的地区。保存有中华鳃、扬子鳄、白暨豚等珍稀动物。 平原境内长江干流及其众多的大小支流，河长水丰，汉江等河段落差大，适宜建水电坝址，进行多级开发。宜昌至河口段水能蕴藏量为4944.5万千瓦。尤以湖北省境内各河段水能资源格外丰富，长江和汉江过境流量800亿立方米，水能蕴藏量达40以〕万千瓦，仅次于川、滇、藏，居全国第四位，且各水系流域雨季时空分布不一，修建电站可借助长江、汉江丰枯期的先后，进行相互调剂补偿。矿产资源不多。鄂东大冶、宁(南京)芜(湖)及湘中涟源一带分别是中国著名铁矿和锰矿分布地区。(冯嘉苹)
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