self-purification capacity

Experimental study of the self-purification capacity of COD in the aeration zone layers

COD在包气带地层中自净能力的试验研究

The higher the magnitude of self-purification capacity was , the greater the self-purification capacity of water environment of area was .

自净能力等级越高，区域水环境的自净能力越强。

An approach to the relationship between natural reservation and environmental self-purification capacity

自然保护区与环境自净关系探讨

The concrete river regulation work has weakened the self-purification capacity of the rivers in the city .

前言：混凝土“包”起来的河道治理工程导致城市河流自我净化能力降低。

Water Environment Self-Purification Capacity Geography Information Model ( GIM ) in Guilin Section of Lijiang River

漓江桂林市区段水环境自净容量地理信息模型探讨

The environmental self-purification capacity is tremendous . The understanding and developing of it is highly important to protect the environment against pollution .

环境的自净能力是巨大的，认识、掌握、开发环境自净能力对控制污染，保护环境十分重要。

According to the calculating principle of wind scale and earthquake magnitude , the concept of the magnitude of self-purification capacity of water environment of area was put forward .

根据地震等级和风力等级的计算原理，提出了区域水环境自净能力等级的概念。

Ecological revetment of urban river course has functions of detaining flood , absorbing and storing water , regulating water level , increasing self-purification capacity of water and protecting vegetation .

城市河道生态护岸具有滞洪补枯与调节水位、增强水体自净能力及保护生物植被的功能。

The water self-purification capacity changes between seasons , and if we can use the seasonal fluctuation scientifically and economically , we can prevent and cure water pollution more effectively .

水体的自净能力随季节的不同会有所差别，充分利用水体自净能力及其季节性变动，就可以有效的防治水体污染。

In which , pollution of water resources is particularly prominent , water itself has self-purification capacity , but the abuse of water resources and excessive sewage cause many issues like deterioration of water quality .

其中水资源的污染问题尤为突出，水体本身具有自净能力，但是滥用和过度排污造成水质恶化等诸多问题。

The surfactants can seriously harm the aquatic plants , the aquatic animals , and the microorganisms , impair the self-purification capacity of the water body , speed the water eutrophication process .

由于表面活性剂对水生植物、水生动物及微生物的损害比较大，影响水体自净能力并加速水体富营养化进程。

Among inorganic nitrogens , NO_3-N was as high as 91.25 % , while NO_2-N was only 1.05 % , indicating that the Three Gorges Reservoir has great self-purification capacity .

在无机氮组成中，NO3-N高达91.25%，而NO2-N仅占1.05%，这表明调查水域有较强的自净能力。

The ecological function of ecosystem in Jiaozhou Bay decreases year by year , these mainly perform that , the sea area decreases , self-purification capacity decreases , biology community structure is destroyed , and fishery resources decline .

胶州湾生态系统的生态功能正在趋于下降，主要表现在水域面积的不断缩小、自净能力的不断削弱、生物群落结构受到破坏和渔业资源的严重衰退，直接威胁着胶州湾的可持续发展。

Closed to the pollution sources , the input loads of nitrogen and phosphorus pollution were greater than the output loads , which exceeded its self-purification capacity of aquatic ecosystems and then resulted in eco-stranded .

靠近污染源，输入的氮、磷外源污染负荷要大于污染输出负荷，超过其水生生态系统的自净能力，造成生态滞留。

Through a variety of ways , pollutants enter the foundation soil and continue to accumulate . If pollutants are more than self-purification capacity of soil , it will cause pollution , and results in the changes of soil composition , structure and function .

污染物质通过多种途径进入地基土，并不断积累，如果超过土的自净能力，就会引起污染，使得地基土的组成、结构和功能发生变化。

Study on the change of tidal current field shows that the exchange capability and the physical self-purification capacity of the water are weakened by the West Breakwater , water quality of the sea area near the alkali factory and the harbor is influenced .

通过对连云港近岸海域潮流场变化的研究，表明西大堤工程使连云港近岸海域的水体交换能力和物理自净能力大为降低，对连云港碱厂海域和港口海域的水质产生了一定的影响。

After Three Gorges Reservoir stores water , hydrodynamic condition changed ultimately at the branch rivers of Three Gorges Reservoir Area , velocity becomes slowly , self-purification capacity comes down . According to monitoring data , Reservoir Area tributary quality comes down year by year .

三峡水库蓄水后，库区河流水动力情势发生了根本性的改变，流速变缓，水体的自净能力下降，据监测资料，库区支流水质逐年下降。

Diffusion and advection are two important mechanisms of material transport in coastal and marine waters . They are significant in studying seawater solute transport , the assessment of self-purification capacity of the ocean , and the evaluation of eddy diffusion process in the ocean .

近岸水体的混合（平流和扩散）是物质输送的重要过程，其认识对建立海水溶质输运模型、评估海洋的自净能力，以及研究海洋的稀释扩散系数等具有重要意义。