流域

小流域N、P污染负荷的构成比重研究

The pollution of nitrogen and phosphor constitute at small watershed

基于GIS的小流域坡耕地调查方法探讨

Sloping Farmland Investigation Method in Small Watershed Based on GIS

尼罗河流域一年四季气候温和。

The Nile Valley keeps a temperate climate throughout the year .

亚马孙河流域已有40万平方公里的森林遭到滥伐。

400,000 square kilometres of the Amazon basin have already been deforested .

该河流域的地形自洪水以来发生了显著变化。

The topography of the river 's basin has changed significantly since the floods .

中国古代文化发祥于黄河流域。

China 's ancient culture originated in the Yellow River basin .

该市居民准备逃到天气较为凉爽的江河流域避暑。

The city 's population prepared to flee heat for the relative cool of the rivers .

古埃及统治尼罗河流域几千年。

Ancient Egypt ruled the Nile Valley for thousands of years .

然后经过埃及著名的尼罗河流域到达地中海。

Then it goes through Egypt 's famous Nile Valley before reaching the Mediterranean Sea .

现在河水不但不在流域内肆疟，反而被人们用来生产电力

Instead of wrecking the valley , the waters are put to use making electricity .

受寒潮影响，长江流域及其以北地区将有大风。

The cold wave will bring strong gales to areas along the Yangtze River and north of the river , according to the NMC .

报告显示，长江流域在水质提升、水生物种多样性修复以及污染防控方面均取得明显成效。

China has made notable progress in improving water quality , restoring aquatic biodiversity and controlling pollution in the Yangtze River basin , according to the report .

通知提出，长江流域禁捕是保护长江和加强生态文明建设的重要举措，沿江各地政府和各有关部门要细化完善各项政策措施，全面抓好落实。

As the fishing ban in the Yangtze River basin is an important measure to protect the river and improve the ecological environment , local governments and related departments should roll out specific policies and measures to ensure its implementation , the circular said .

国务院办公厅日前印发通知，要求切实做好长江流域禁捕有关工作以及退捕渔民安置保障工作。

China called for solid efforts to implement the fishing ban in the Yangtze River basin , and ensure the livelihoods of affected fishermen after they bid farewell to nets and boats , according to a circular released by the General Office of the State Council .

GIS支持下的艾比湖流域功能分区的研究

Functional District of Ebinur Lake Watershed Based on GIS

川西平原岷江流域冲积性水稻土中Be和V的背景值研究

Study background value of beryllium and vanadium in alluvial rice soil of Western Sichuan Plain

长江流域SO2与NOx可能有相同的来源，二者可能大部分来源于固定源排放。

It is likely that SO_2 and NO_x come from same sources , most of them likely come from stationary source emissions .

DEM空间分辨率和重取样方式对流域特征参数的提取会产生重要影响。

The DEM spatial resolution and sampling method have a great impact on the watershed features .

锡林河流域放牧条件下草原CH4通量研究结果初报

Preliminary results of a study on ch_ 4 Flux in Xilin River Basin Steppe under Different Grazing Intensities

探讨了利用GIS与RS技术对流域环境进行动态监测分析，并建立环境影响指标数据库。

RS and GIS technique was applied to dynamic monitoring analysis of basin env iro nment , and the establishment of environment impact target database .

分布式水文模型大多基于DEM（数字高程模型），通过DEM，可以自动提取流域的地貌特征，其中包括流域数字河网的生成。

Most of distributed hydrological models are based on DEM ( Digital Elevation Model ), by which we can extract drainage network automatically .

国内的侵蚀预报模型主要有在GIS支持下的陡坡地包括浅沟侵蚀的坡面侵蚀预报模型、有一定物理成因的坡面侵蚀预报模型和流域预报模型。

Steep hill slope erosion prediction model including shallow gully erosion supported by GIS , the process based hillslope erosion prediction model , and watershed erosion prediction model in China are outlined .

用MSS卫星图象分析孙水河流域泥石流群体的宏观发育规律

Analysing the Macroscopic Growth Regularity of the Debris Groups at Sun-Shui River Basin by Means of MSS Satellite Image

研究了基于DEM的流域特征信息的提取，包括水系的提取、子流域的划分、流域边界线的提取等；

The digital analysis of catchments properties from DEM is studied , such as the extraction of river network , boundary of subwatershed and distributed catchments characters .

总结了根据流域的数字高程模型（DEM）自动提取河网水系的集水面积方法。

The widely used method for extracting the watershed channel network from digital elevation model ( DEM ), i.e. the water catchment area method , is presented .

通过对PCA中主成分的特征向量分析，以及对原始各波段的负荷因子分析可知，PCA变换处理在澜沧江流域土地覆盖遥感监测分类实施中，对波段选取具有一定的指导作用；

Based on the analysis of feature vector and original bands loading on the main principal components , we known that PCA is of some affects about feature selection .

使用国家卫星气象中心的AMSU资料分析了淮河流域发生的中尺度云团中降水最可能出现的位置。

The probable position of mesoscale convective precipitation is analyzed with AMSU data .

VR-GIS技术在数字流域中的应用研究

Application Research of VR-GIS on Digital Valley

利用相关关系，在不同地区研究了满足实际洪水预报要求的DEM分辨率问题。本文以三峡区间和福建龙岩地区小流域为例研究满足实际洪水预报要求的DEM分辨率问题。

Using the correlation relationships , the resolution ratio of DEM that meet the requirement of flood forecasting is studied in different areas , which provides the foundation for actual application .

采用长系列资料，应用LPM模型，进行大量运算获得了现状年和2010水平年的六个黑河流域水资源优化配置方案；

Six schemes in the status year and 2010 level year were achieved by long series data and IPM after mass operation .