流域

The management of water resource gap, is a special sub system in the whole system.

取水口管理是长江流域水资源管理系统中的一个比较难于分析的子模块。

Based on the conditions of Middle Route of South-North Water Diversion Project, this paper discusses the application of object-oriented visual simulation in long distance water diversion projects.

1引言 随着我国城市化进程的加快，为解决水资源紧缺，通过跨地区、跨流域的调水工程解决城市用水是一种必然的发展趋势。

And the best water-conserving and flood-controlling forest cover is the main index for regional scale diposition. While the small watershed scale should consider the forest type. And the stable forest structure is the key factor for the disposition in slope and gully scale.

指出在区域尺度上，主要以理水调洪森林覆盖率为区域空间配置的指标；在小流域尺度上主要考虑防护林林种的配置方式；而在坡面和沟道尺度上，主要考虑防护林树种和植被群落的稳定林分结构设计。

China has long coastline and drainage basins, rich resources of waterage promote the flourish of ports.

我国有着漫长的海岸线和内河流域，丰富的水路运输资源促进了港口业的蓬勃发展。

Problems from the aspect of international watercourse law.

一是要充分利用国际水道法，加强其对我国水资源安全的保障；二是从国内法的角度建议制定《节水法》、完善流域管理体制、增强法律的可操作性等。

Water system is an important part of Basin. The information of water system (such as the classification of watercourse, the area of catchments, and so on) is the basic data which is used to the hydrological models.

水系是流域的重要组成部分；水系信息(河道的分级、集水面积等)是水文模型分析的基础数据。

In addition, this system didnt seem Weihe catchment as a whole system because of the restriction of project data and conditions. The system need to be perfected so that the flood prevention ability of Weihe is improved and the loss of flood disaster and waterlog is reduced in last works.

另外，研究过程中由于资料、工程情况的限制，未能将整个卫河流域作为统一的防洪系统来对待，需在今后的研究中进一步完善，以提高卫河防洪能力，减轻两岸洪涝灾害。

With the acceleration of urbanization development these years, the impact of the human various activities on hydro- ecological environment is very serious, including landscape structure and function destroyed, biodiversity lowed and natural landscape disappeared, which make urban waterlog deteriorated and hydrologic environment polluted et.

近年来，随着城市化的加速发展，人类的各项活动对流域水文生态环境的干扰尤为强烈，原有的景观结构遭到破坏，系统功能紊乱、减弱甚至丧失；生物多样性下降以及自然景观的衰退，加剧了城市涝灾的发生、水资源短缺及水环境污染。

From 1997 to 1999,Gregory scheme succeeds in simulating the basic character of summer rainfall in china, i.e., there are drought in HuaBei and most north province of china in 1997 summer, a heavy flood in Yangtse River valley in 1998 summer and waterlog in south and drought in north of china.

改进后的Gregory方案不仅模拟出了中高纬环流形势的演变过程、西太平洋副高的强弱变化，包括副高的进退和北跳；而且模拟出了98年夏季我国长江流域的大范围降水。

At last, we obtain that benefits of multi-annual average waterlog control in 1990-2004 is obviously higher than in 1949-1990. It proofs that benefits of waterlog control in Liaohe River Basin starts to rise obviously in the 1990s and has remarkable benefits of waterlog control.

分析结果表明，后一个时段多年平均治涝效益明显高于前一个时段的，说明辽河流域治涝效益自20世纪90年代后呈上升趋势，效益显著。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。