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In order to address the imbalance between water quality and designated use in the Jinhua River watershed, an environmental management mode for the watershed was developed based on assimilative capacity.

为解决金华江流域义乌段水质与水功能区要求间失衡的环境问题,建立基于水体纳污能力的流域水环境管理模式。

A plan for the development, use and management of the water resources of a river basin

流域规划流域水资源的开发、利用和管理的规划。

Its artistic value and social development may be more advanced compared with contemporary primitive cultures in Yellow River basin and Yangzi River basin, and has an important position in History of Chinese cultural development.

就泛红山文化而言,是以她精美的玉器和独特的造型令人震撼而闻名于世。其艺术价值和社会文明发展程度或许高于同时期的黄河流域和长江流域文化。

Results show 1 the total water requirement of the crops in the Jinghe Watershed is 740543.20×10^4 m^3, accounting for 41.58% of the total water requirement of the region; 2 of the two major groups of crops, grain crops are higher than cash crops in water requirement quotas; and among specific crops, vegetables, melons, rice and cotton are higher and sunflower, potato and benne are lower than other crops; 3 water requirement per hectare varies from county to county with the highest being 5682m^3hm^(-2), in Jingyang County, and the lowest 4022 m^3hm^(-2) in Dingbian County, averaged to 4 583 m^3hm^(-2), but the water requirement quota of a crop does not vary with the county, so calculation of water requirement quota of a county is closely related to its cropping structure; and 4 because of serious waste of water in farming, the actual water consumption in agriculture in the region is much higher than the calculated crop water requirement.

结果表明,泾河流域农作物需水量总计740543.20万立方公尺,农作物需水占总需水量的比例较高,为41.58%。粮食作物需水定额较经济作物高;就具体作物而言,菜、瓜类、水稻、棉花等需水定额较高,向日葵、薯类、胡麻等较低。各县单位面积需水量差异较大,平均值为4583立方公尺hm^(-2);泾阳县最高,为5682立方公尺hm^(-2),定边县最低,为4022立方公尺hm^(-2)。由于事先设定大多数作物的需水定额不随县的改变而改变,因此需水量与作物结构密切相关。农业用水浪费严重,使泾河流域农作物实际用水量远高于需水量的理论计算值。

Supported by Blackland GRASS Geographic Information System,the basic and special environmental databases of West Lake Watershed were established.

以地理信息系统(BlacklandGRASS软件)为基础平台,建立了西湖流域基础和专题数据库;结合地下水污染风险评价专业模型,计算出流域内地下水污染风险图。

Applied with the holistic analysis method, based on the theorem of maximal probability multiplication and the principle of cannikin, the paper establishes a coordination model between the sub-systems (river, wetland, lake, city, dryland) within the ecological water allocation system of the river basin.

本文应用整体分析法,基于最大概率乘积定理和"木桶法则",构造了流域生态用水分配系统的协调性评价模型,分析了各子系统生态用水分配的合理度,完善了流域生态用水分配合理性的评价内容和方法。

Let's boat in the river of history to enjoy the course of the civilization's development, listen to the chanty of Egyptian Nile, smell the aroma of paddy from the two rivers valley in the west Asia, have a holy bath in the Ganges of India in the south Asia, casting net in the Changjiang River and Yellow River of China ,enjoy the democracy lamp of Grecian city-state in aegean sea, taste the free drink of the Mississippi, let's view and admire the great billow hit the shore, the sea and the sky have the same color, so our noble heart would be soul-stirring.

驾一页扁舟沿着历史的长河去回顾文明的历程吧,听埃及尼罗河上的船歌,闻西亚两河流域的稻香,在南亚的印度河、恒河感受一次圣浴,到中国的黄河、长江流域撒网,观古希腊的爱琴海城邦的民主灯火,品大洋彼岸的密西西比河的自由琼浆,让我们领略惊涛拍岸、水天一色,令尊贵的心灵荡气回肠

These projects are: the ''three norths'' shelterbelts (the western area of Northeast, and the northern parts of North and Northwest China), the shelterbelts along the upper and middle reaches of the Yangtze River, the coastal shelterbelts, the plain farmland shelterbelts, the Taihang Mountains afforestation project, the anti-desertification project, the shelterbelts for comprehensive control in the Huaihe River and Taihu Lake basins, the shelterbelts for comprehensive control in the Pearl River basin, the shelterbelts for comprehensive control in the Liaohe River basin, and the shelterbelts along the middle reaches of the Yellow River.

这十大林业生态工程是:&三北&(东北西部、华北北部、西北地区)防护林体系工程、长江中上游防护林体系工程、沿海防护林体系工程、平原农田防护林体系工程、太行山绿化工程、防治沙漠化工程、淮河太湖流域综合治理防护林体系工程、珠江流域综合治理防护林体系工程、辽河流域综合治理防护林体系工程、黄河中游防护林体系工程,规划造林总面积1.2亿公顷。

Firstly, according to study dynamic changes of the elements structures in succession about natural and artificial forest, then summarized regular patterns;at the same time.based on the study of Coupling Relationship between structure and function of water conservation forest established the ideal structures from the stand level and the watershed level. The ideal structures from the stand level: uneven-aged, double layer and mixed structure, and trend to natural forest. The watershed level followed the same principle, that is double layer patches, uneven-aged forest well-distributed and to build up different forest patches in watershed.

首先,经过对北京山区水源林天然林和人工林结构要素的演替动态研究,提出其发展规律,同时依据水源林结构与功能耦合关系研究,从林分层次和流域层次上分别构建了水源林的理想结构,其中,林分层次上水源林的理想结构为:异龄、复层、混交的结构状态,林分结构趋于天然林结构的特征;在流域层次上水源林的理想结构为也应形成&复层&、&异龄&、&混交&的结构,即:在流域各水源林斑块间形成林冠层复层、斑块内部乔木、灌木、草本层的复层;不同水源林年龄面积上的均匀分布;形成不同水源林斑块间的镶嵌分布。

In the light of the theory on modern river system capture, it had been south- confluence structure in the east of Block 4, Tahe Oilfield. Then, the base level of erosion had declined in the northwest, and the north border of south-confluence drainage basin was captured by underground way, so the inverted river was builtup.

借鉴现代水系袭夺理论,证实了塔河油田四区东部岩溶流域早期为南向汇流结构,而后期由于构造运动引起西北部侵蚀基准面下降,并通过地下途径对邻近南向流域北缘进行逐步袭夺,形成了大型倒淌河,再现了本区岩溶古水系及流域的阶段性演化过程,从而为揭示塔河油田奥陶系古岩溶发育规律提供了重要的依据。

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