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Through the design of AGP-test equipments and methods which could simulate the impact of input of exogenous nutrients on eutrophication, the evolution of algae and aquatic species extinction process in Miyun Reservoir under different environmental and nutritional conditions are simulated. Then the ratio growth rate in the three simulation stages are simulated and analyzed combining the numerical analysis software MATLAB 7.0. At last, the conclusion that in the three designed stage, the total phosphorus threshold which leads to a water bloom in Miyun is respctively 0.053mg/L, 0.062mg/L, 0.064 mg/L is educed. Based on the regression relationship of total phosphorus,chlorophyll-a, total nitrogen, and the transparency,we compartmentalized the evaluation standard level of eutrophication in Miyun Reservoir.

通过设计模拟外源输入对富营养化作用的AGP试验装置和方法,模拟了不同环境条件、营养条件下密云水库优势藻种演变和富营养化过程,结合使用MATLAB 7.0数值分析软件,对3期模拟时段的比增长率进行拟合分析,得出3期设计阶段密云富营养化发生的总磷阈值为0.053mg/L、0.062 mg/L、0.064 mg/L,再根据总磷与叶绿素a、总氮、透明度之间的回归关系,划分了密云水库富营养化的评价标准级别。

The normal water level of a reservoir is a key parameter for hydropower station operation. A multi-objective decision-making model is developed by grey correlation analysis, which can effectively treat unquantifiable grey evaluating indicators.

水库正常蓄水位是水电站的主要参数之一,用灰色关联分析建立起多目标决策模型,有效处理了不可量化的灰色评价指标,对三峡水库正常蓄水位方案进行了选择。

The sluice of the reservoirs may cause the upraise of the underground water in the grottoes'area and influence the protection of the grottoes'cultural relic, also it may influence the entironment and the microclimate of the earth's surface in the area, whereas the bedrock joint and the shatter crack are developed in the area.

鉴于该地区基岩节理和其他形式的破碎发育,水库蓄水有可能是造成窟区地下水位上升的原因,并有可能影响到石雕文物的保护,而且水库蓄水对研究区地表生态环境和小气候也会产生一定的影响。

This paper deals with the importance of investigation of the flood diversion capacity,working contents,investigation method and way of evaluation of the watercourse .

本文论述了水库下游河道行洪能力调查的重要性、工作内容、调查方法和评价方法,可为我国其他水库下游河道的调查与评价提供参考。

On the basis of the spatial information technology, this paper presents a new method of calculation of reservoir storage by gathering the precise terrain data of the reservoir and establishing reservoir watercourse DEM.

为此,利用空间信息技术,在采集和构建高精度的水库地形数字高程模型的基础上,结合GIS组件二次开发技术,对水库库容的精确计算提出了一种新方法。

It is the source of water for Crane Prairie Reservoir and Wickiup Reservoir.

它是草原水库水源起重机、wickiup水库

In order to understand the influence by the Three Gorges Project and supply basal information of estuary environment before sluice, a study was carried out on the Changjiang Estuary and its adjoining area from 1998 to 2001. This paper discussed mainly the influence by the Three Gorges Project on estuary environment of the Changjiang River. This paper analyses the hydrophysics, deposit environment, hydrochemistry, primary productivity, plankton, benthon and fishery resources of the Changjiang Estuary and its adjoining area, and further the relationship between the environment and runoff of the Changjiang Estuary.

根据调查数据,结合历史资料对三峡水库蓄水前的长江口及邻近海域水文物理、沉积环境、水化学、初级生产力、浮游生物、底栖生物和渔业资源进行了全面分析,并进一步阐明了长江口生态环境与长江入海径流量间的关系;提供了三峡水库蓄水前长江口生态与环境的基础资料,对长江口生态系统健康度作出评价,为长江口生态环境保护与可持续发展奠定了良好的基础。

Wanfenghu reservoir has been polluted seriously, and waters are in a severe eutrophication condition. Whether physico-chemical indexes or biological indexes appraisal, it proved that the water quality of Wanfenghu is between IV-V. Wanfenghu contains high TN and TP which are 5 to 6 times of the national standard content, and the quantities construction of phytoplankton communities is deeply disequilibrium, the Cyanophyta and Charophyta occupying overwhelming

万峰湖水库已经受到了严重污染,水体处于严重富营养化状态,其水体中的溶解氧的三季变化范围在2.92-5.3mg·L之间、化学耗氧量三季平均值为34.77 mg·L~(-1)、总氮三季平均值为2.5 mg·L~(-1)、总磷的三季平均值为0.35 mg·L~(-1)、叶绿素a含量的三季平均值为23.64 mg·m~(-3),以上各指标表明万峰湖水库水体处于Ⅳ-Ⅴ类水质;无论从浮游植物的群落数量上还是浮游植物种类组成上看,蓝藻和绿藻都占绝对优势,而其它各种藻类极少,是典型的蓝-绿藻型水

To realize the reservoir migration production evolution from individual agriculture to industrialization, the paper studies the regional industrialization management for reservoir resettlement region, which would solve the strategy implementation of central and western development and migration group production and life problems caused by the decision-making of water and electricity use in the circumlittoral developed zone.

为实现我国水库移民生产从个体农业向产业化发展演进,对水库移民区域产业化管理加以研究,以解决中西部大开发战略实施,及沿海经济发达地区用水用电决策下产生的移民群体的生产和生活问题。关键词移民安置;产业化;管理体制

With the construction of large and medium sized reservoirs, a lot of fording slopes appear and the change of reservoir water level will influence the slope stability, which would lead to landslides, even geological hazards.

随着大中型水库的陆续兴建,形成了大量的涉水岸坡,库水水位的波动将影响这些岸坡的稳定性,可能诱发水库滑坡,甚至形成地质灾害。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。