流域

The results show that when the tropical western Pacific is in a warming state in spring, convective activities are intensified around the Philippines. In this case, there is a cyclonic anomaly circulation in the lower troposphere over the South China Sea, and the western Pacific subtropical high shifts eastward, thus, the early onset of the South China Sea summer monsoon can be caused. Moreover, when the tropical western Pacific is also in a warming state, convective activities around the Philippines are also strong in summer, since the western Pacific subtropical high abruptly shifts northward in mid-June and early July during its northward advance in this case, the abrupt northward-shift of the East Asian summer monsoon rainband from South China to the Yangtze River and the Huaihe River valleys is obvious in mid-June and this monsoon rainband again jumps northward from the Yangtze River and the Huaihe River valleys to the Yellow River valley, North China and Northeast China in early July.

分析结果表明：当春季热带西太平洋处于暖状态，菲律宾周围对流活动强，在这种情况下，南海上空对流层下层有气旋性距平环流，西太平洋副热带高压偏东，从而使得南海夏季风爆发早；并且，当夏季热带西太平洋也处于暖状态，菲律宾周围对流活动也很强，在这种情况下，西太平洋副热带高压北进时，在6月中旬和7月初存在明显的突跳，从而使得东亚季风雨带在6月中旬明显由华南北跳到江淮流域，并于7月初由江淮流域北跳到黄河流域、华北和东北地区。

On the basis of this,a completely new method of natural water renewability assessment was developed.

其次，在基于GRID的泾河流域水量动态平衡模拟基础上，通过逐网格计算泾河流域1996年各月水资源自然更新率，来对泾河流域1996年水资源自然再生能力进行评价。

On base of which the rule and the model of optimal operation are established, and the optimal dispatching schemes are acquired by using optimal-simulation method.

确定了流域水资源最优调配的基本原则，建立了叶尔羌河流域水资源最优调配模型，运用优化模拟技术进行求解，得出了叶河流域水资源最优调配方案。

With case study in Wufendi Watershed of Hufuchuan Basin, landscape dynamics simulation analysis was studied at different scales including leaf scale, ecosystem scale and landscape scale through field experiments with model simulation.

本研究以皇甫川流域的五分地沟小流域为例，野外实验和模型模拟相结合，从植物的叶片尺度到生态系统尺度，再到景观尺度，进行了小流域的景观系统动态模拟分析的研究。

Planners and administrant should take river basin as a management unit, use the skills of ecosystem management and set sustainable development as final objective.

本研究认为管理者应将基隆河流域视为一完整的生态系统，以全流域做为管理单位，从透过维护生态系统的方式进行管理，以基隆河流域的永续发展作为其最终目标。

It shows that runoff is closely correlated with the features of individual precipitation, and it is also affected by vegetation within a short period of time. Raindrop erosion, sheet flow erosion and rill erosion on the slope are the main soil erosion patterns; sediment yield occurs mainly in flood season. Human activity and individual precipitation are two important factors that control the soil erosion at a small watershed. Comprehensive management on the slope in a small watershed is an efficient measure of water and soil conservation.

分析表明，小流域的产流方式容易随次降雨条件的变化而变化，植被因素在较小时间尺度内就会影响产流；产沙主要来源于坡面上的溅蚀、片蚀和细沟侵蚀，时间主要集中在汛期；人类活动以及次降雨条件是控制小流域侵蚀产沙的重要因素；在小流域内进行坡面的综合治理是水土保持的有效措施。

The results show that:(1) wetland reservoirs can control wetland degeneration and springwater overflow;(2)wetland reservoirs can store floodwater and winter to prevent flood, drought and desertification so that keep ecological system balance of wetland;(3) uncoordinated contradiction between agricultural water use and ecological water demand can be resolved under the adjustable function of wetland reservoirs;(4)wetland reservoirs has effective capability to keep biological diversity.

对位于玛纳斯河流域泉水溢出带中的湿地水库群对流域生态环境的作用进行了研究，结果表明，该湿地水库群在防止湿地萎缩退化、防止次生盐渍化、保护流域内生物多样性、防风固沙、防止土壤沙化、抵御洪、旱灾害威胁、加强湿地调控能力以及增加了绿洲的人口承载能力和生产力等方面起到了很好的保护作用。

Two commonly used methods of watershed segmentation were compared and analyzed. One is subarea method, and the other is grid method.

本文分析比较了流域空间离散化的两种途径：子流域法和网格法，并以此对流域径流过程模拟的影响进行了探讨。

This paper discusses the research carried out on the Lake Sugan, in the northern margin of Chaidam Basin. The climate and environmental changes in Lake Sugan drainage area over the past 2670 years were studied using the varve dating of the well preserved lamination sediments in core SG03I taken from the center of Lake Sugan, the study of varve formation in modern lake system and modern process study of carbonate and oxygen isotopes of the water within the drainage area, and according to the main index of the stable isotopes of carbonate sediments synthesized other index analysis.

本文以柴达木盆地北缘苏干湖为研究对象，通过对湖泊中心位置SG03I孔保存完好的纹泥沉积物岩芯进行年代学研究，对湖泊现代沉积过程及碳酸盐、流域水体同位素进行现代过程研究，以沉积碳酸盐稳定同位素指标为主，结合其它代用指标的综合分析，探讨苏干湖流域近2670年来的气候与环境变化，综合区域其它记录对苏干湖流域晚全新世气候变化的驱动机制进行探讨，获得如下认识：1、柴达木盆地北缘苏干湖若干钻孔岩芯发现，水深大于3.0m的沉积物均具有裸眼可分辩的由深色层和浅色层组成的纹层层理。

This thesis inspects the management of TVA in Tennessee valley from 1933 to 1953. The author hopes to explore the role it played on the process of watershed management and get a deeper understanding of the government intervention in United States.

本文从历史视角入手，考察了1933年到1953年间TVA对美国田纳西流域的治理历程，从中探索出早期TVA在流域治理时所遵循的理念及其所扮演的角色，进而对二十世纪三四十年代田纳西流域的发展以及美国政府干预思想有深刻的认识。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷