长江

West Chongming island is located the Pacific rim China coastline center point area, is situated at the Chinese biggest rivers Yangtze River estuary, is the world biggest river mouth silting alluviation island, also is China is only inferior to the Island of Taiwan, Hainan Island's third big islands, has "the Yangtze River gateway, the East China Sea yingzhou" the name.

崇明岛位于西太平洋沿岸中国海岸线的中点地区，地处中国最大河流长江入海口，是全世界最大的河口冲积岛，也是中国仅次于台湾岛、海南岛的第三大岛屿，有&长江门户、东海瀛洲&之称。

Based on the study project of groundwater environment in the middle-lower reach area of River Yangtze, to describe the background characteristics of copper in groundwater, composition of the aquiferous media, properties of overlying rock and soil, oxidation and reduction environment, conditions of runoff in groundwater and acid-alkaline numbers of groundwater and soil.

根据国家科技攻关项目长江中下游重点地区地下水环境背景值调研的研究结果，论述了长江中下游地区地下水铜元素的背景特征及其与地下水的含水介质成分、上覆岩土性质、氧化还原环境、地下水的迳流条件、地下水及土壤的酸碱度的密切关系。

Based on the measurement of chromophoric dissolvable organic matter in 22 shallow lakes in the middle and lower reaches of Yangtze River, the attenuation of ultraviolet radiation in the lakes in the middle and lower reaches of Yangtze River and corresponding penetrating depth were estimated using empirical models; and checked up utilizing the field measured attenuation of ultraviolet radiation in Lake Donghu Wuhan.

基于对长江中下游22个浅水湖泊有色可溶性有机物吸收的测量，运用经验模式估算了紫外辐射在长江中下游湖泊的衰减及对应的穿透深度，并利用在武汉东湖实测的紫外辐射衰减进行了检验。

As far as the Changjiang River is concerned, the fluvial sediment discharge has been decreasing since the early 1980s in response to catchment human activities, which results in significant sedimentological and geomorphological changes over the deltaic areas.

由于流域水库建设的影响，长江输沙率自1980年以来呈现明显下降趋势，引发了研究人员对长江三角洲地貌和沉积响应问题的关注。

Worked out a concrete goal for biodiversity conservation in the area, including to maintain and protect the speciality and intactness of the combined ecosystem of rivers and lakes, to protect freshwater resources, to maintain and restore the natural hydrolgical process of the river system of the area, to protect the core species and their habitats efficiently, to protect and restore the typical zonal vegetation (the subtropical evergreen broad-leaved forest), to forbit introducing the invasive species, and to eliminate or control the settled invasive species.

制定了长江中游生物多样性保护的具体目标，即维持和保护江湖复合生态系统的独特性和完整性；保护淡水资源；维持和恢复长江中游水系的自然水文过程；有效保护核心物种及其栖息地；保护和恢复典型的地带性植被；禁止引进入侵性物种，消灭或控制已经定居的入侵性物种。3。

Relatively, the areaswith lowspecies richness locates in south ofHebei Province,Shandong, Henan and Jiangsu Province, the part of Anhui Province in the north side of Yangtze River and delta ofYangtze River, the areas of Hunan and Hubei along the Yangtze River, as well as the Sichuan basin. All thegeographical units are divided into three groups according to the glires species component by hierarchical clusteranalysis, i.e.

地理单元的物种丰富度分析结果表明，云南西部到四川中部的横断山区、陕西秦岭和甘肃南部山地的啮类动物丰富度较高；河北省东南部、山东、河南、江苏、安徽的长江以北地区及长江三角洲、湖南和湖北的沿江地区以及四川盆地等地物种丰富度较低。

The daily observed data of surface suspended sediment concentration at the Nanhui headland from May 2002 to October 2005, the observed data of tidal range, tidal level, wind speed and direction at the Nanhui hydrometeorological station and the water and sediment discharge data observed at Datong hydrographic station in the same period were used to study the periodicity and affecting mechanism of SSC variation.

根据2002年5月至2005年10月在杭州湾北岸和长江口口门交汇处一固定观测点表层每日取样的悬沙浓度资料和同期的潮差、潮位、风向风速以及长江大通水文站的水沙资料，利用Spss、MatLab分析软件，采用小波分析和相关性分析方法，探讨了悬沙浓度变化的周期性及其影响机制。

It is the development trend of hydrology in the Yangtze River Basin to strengthen and optimize hydrometric network planning and construction, speed up the modernization of hydrological monitoring and data transmission, enhance hydrological and water resources fo...

加强水文水资源监测站网的规划，加快水文测报现代化建设，提升水文水资源预报能力，大力开展长江水文水资源变化规律研究，促进水文事业发展，是长江水文的发展方向。

Based on the existing data of the Yangtze delta area, a preparatory simulative experiment have been done by the model on the sea-land change course in Yangtze delta area since l0000aBP, and a good simulative effect are obvious from the hypsometric paleotopographic map and 3D color shaded-relief map which exported from the model. That provides a visual scene to analyze and discuss the Yangtze delta evolution, coastline shifting, even the relationship between the ancient civilizations migration and environments.

利用海面—地面系统的模拟模型，对长江三角洲一万年以来的海面—地面变化过程进行了重构和反演，获得了一套该地区的古地貌和海陆关系演变图，它包括等高线、晕渲图、三维图等三种不同表现形式的地形图，为分析讨论长江三角洲地区地貌发育、岸线变迁乃至古代文明的迁徙和兴衰与环境的关系提供了很直观的场景。

In late September and early October 2002, 163 surface samples were grabbed from the Yangtze subaqueous delta within a range of 122°~123°E and 30°50'~31°50'N. Based on analyses of grain size, foraminifera, ostracoda, carbonate, organic carbon of surface sediments, the study area can be divided into two parts, i.

2002年9-10月在长江水下三角洲获取了163个表层样，综合粒度、有孔虫、介形类、有机碳以及CaCO3含量的资料表明，研究区明显分为两部分，即长江河口现代三角洲和晚更新世末期三角洲。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。