水污染

Water is used in low efficiency. Serious water waste and water pollution are mainly caused by unreasonable price.

同时用水效率低，水浪费和水污染现象严重，这主要是由不合理的水价所致。

Water quality on-line monitoring equipment; water quality bio-chemical analysis apparatus; the experimental system for the dynamic simulation of water environments, and the on-line measurement of water body deoxygenating, re-aeration and the organic contaminant concentrations; the experimental system for the dynamical simulation of eutrophication of water environments.

实验中心主要仪器设备有：水质要素在线野外监测设备、水质要素生物化学分析仪器、水环境动态模拟与在线测定水体耗氧、复氧以及各种有机污染物浓度的试验系统，水环境富营养化动态模拟控制实验系统，可以对水质要素进行时间和空间上的监测与分析处理，为水污染治理提供科学的依据。

However many issues immerged in the process and limited the effectiveness of pollution control and ecological improvement.

但排水系统改造在工程实践中也暴露出许多矛盾和问题，严重制约了水污染控制和水生态环境保护效果。

There are laws against littering and against making the air and water dirty.

有法律禁止乱抛垃圾及对的空气和水污染决策。

Due to food pressure, grain product in the western Jilin Province will be enhanced in the near future. Farmland areas in the area will be decreased slowly in the near future, but with the technique development of irrigation establishment, paddy areas and utilization amount of fertilizer and pesticides will be increased rapidly. So, the NPS pollution from farmland will be more serious. The main lakes in the areas such as Moon Lake and Qagan Lake have been polluted by N and P, and the content of salt in the Nenjiang River has been increasing since last 30 years. All of these show that the negative effects of NPS pollution in the area have been serious and should not be neglected by the scientific research and corresponding government management. To deal with the contradiction of agriculture development and water pollution, the trend of increasing paddy area and using amount of fertilizer, pesticide and herbcide in the western Jilin Province should be controlled. Also, the drainage of return flow from paddy should be controlled and return flow should be disposed with ecotechniques by use of the large areas of lakes and mires in the area. Through these measures, the quality of surface water could be protected and the degeneration of ecoenvironment in the area could be contained.

我国由于粮食压力，未来吉林西部的粮食生产还将进一步加强，随着种植业结构的调整，垦殖率会略有下降，但随灌溉设施的建设与完善，水田面积将进一步扩大，化肥、农药的用量还将快速增加，农业活动引起的非点源污染将更加突出，而研究区的主要湖泊月亮湖、查干湖目前已达中等富营氧化水平，嫩江水质的咸化趋势明显，因此农田非点源污染物的流失及其内流区外流化面积的增加对地表水体富营养化、咸化的作用愈来愈明显，农田非点源对地表水水质的影响已不容忽视，应引起社会的关注，为协调农业发展与水污染这一矛盾，吉林西部应遏制化肥、农药施用量增长过快和水田过度开发的势头，控制洗盐回归水的排放量，利用区内广泛分布的大量泡沼对农田径流和回归水进行生态处理，既保护了地表水的水质，又有利于生态环境的改善。

The results indicate that the current national economic assessment stystem overvalues the economical growth while concealing the environmental deterioration in Lianyungang area, which impedes the decision of sustainable development and environmental management.

这表明大气和水污染损失的严重性，以GDP为主要衡量指标的现行国民经济核算体系过高地估计了连云港市的经济增长水平，掩饰了环境的退化，不利于可持续发展的科学决策和环境的管理。

In terms of the environment, air and water pollution has been plaguing us the two major issues, and is affecting our survival space.

在环境方面，大气污染和水污染一直是困扰我们的两大问题，并且正在影响着我们生存的空间。

Species of protozoans was given their SPV in this dissertation.

文中提出了用CPV评价水污染程度的水质划分范畴。

With the development of social economy, many environmental problems have appeared in this area, such as lake swamping, shortage of water resources, water pollution, deterioration of ecosystem, etc.

针对南四湖地区存在的湖泊淤积、水资源短缺、水污染及生态环境恶化等一系列问题，分析了现状南四湖水体水环境质量，并对南水北调工程实施后的水环境质量进行了预测评估。

However, we also face the environmental problems, such as water pollution which threatens the existence of fish.

当然，我们也可能面临一些环境问题，如水污染对鱼类生存的威胁。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。