1) contaminant front
污染锋面
2) non-point source pollution
面源污染
1.
Application of grassed swales in urban non-point source pollution control;
植草沟在城市面源污染控制系统的应用
2.
SWAT simulation of effect of stream water quality on non-point source pollution;
基于SWAT模型的流域面源污染模拟影响分析
3.
Effectiveness of rural environmental education on non-point source pollution control;
农村环境教育在控制农村面源污染中的作用
3) non-point pollution
面源污染
1.
Response of non-point pollution output to landuse change and management strategy in Lihe River watershed of Taihu Lake Basin;
流域土地利用变化的面源污染输出响应及管理策略——以太湖地区蠡河流域为例
2.
Prediction of non-point pollution load for Yahekou Reservoir;
鸭河口水库入库面源污染负荷预测研究
3.
Countermeasures on agricultural non-point pollution in Midu country;
弥渡县农业面源污染及防治对策
4) diffuse pollution
面源污染
1.
In order to provide basic information for effective assess and control of diffuse pollution in tourist attractions,stormwater runoff from four impervious surfaces were selected for study in Wuhan Zoo,Wuhan city,China.
选取武汉市动物园4种典型的不透水面暴雨径流污染特征进行了系统的研究,以期为旅游区面源污染危害评价和治理提供基本的依据。
2.
Organic pollution is the major diffuse pollution ta the Xili Reservoir in Shenzhen City.
深圳市西沥水库受到的面源污染多为有机物污染。
5) nonpoint source pollution
面源污染
1.
Residents′ awareness to agricultural nonpoint source pollution and willingness to pay for its environmental protection in a high-yielding agricultural region in northern China.;
华北高产农区公众对农业面源污染的环境保护意识及支付意愿调查
2.
A study is made on the composition and biomass of macrophyte vegetation communities and their retention of nonpoint source pollution at Liuchahe sub-watershed,Chaohu Lake watershed,in Anhui Province,China.
多水塘湿地系统是我国特有的农业微景观结构,通过对巢湖六叉河小流域多水塘水生植被群落的组成和生物量及其对面源污染的截留作用进行研究,结果表明多水塘湿地系统内共有8种水生植被、5个优势群落,水生植被分布面积占多水塘系统总面积的12。
3.
According to the pollution characters of Xiangxi River in Three Gorges Reservoir Area, a fuzzy prediction model and a model of relationship among precipitation, sediment discharge and pollution load, are established to forecast the point source pollution load and the nonpoint source pollution load in Xiangxi River Basin.
针对三峡库区香溪河流域点源和面源污染负荷特点 ,分别建立了模糊预测模型和降雨~输沙量~污染物相关模型 ,并对污染负荷进行了分析预测 。
6) Surface contamination
表面污染
1.
In this paper, the PC01 αβγ surface contamination survey meter was described.
介绍了PC-01型表面α、β、γ污染测量仪的工作原理、构成、表面污染测量方法及部分标定数据。
2.
[Methods]According to relative national standards,"FD-3013B" intelligent γradiometer was applied to measure the level of environmental radiological protection in nuclear medicine workplace,and "FJ-2201"(α、β) Surface contamination meter was used to conduct detection of surface contamination.
方法按照相关国家标准,采用FD-3013 B智能γ辐射仪测量核医学工作场所的环境放射防护水平,FJ-2201型(α、β)表面污染测量仪进行表面污染检测。
补充资料:锋面
锋面
frontal surface
性质过渡尺度度可。锋气压上升却作量的方法副热滑锋和地,分推动高空降水槽时邑力日,气团常发宽度及阵内不交长。在江变线肠雨。把暖锋面由于fengmian锋面(frontal surfaee)大气中热丈和来源不同的两种气团之间狭窄而略呈倾斜的区,又称锋区。因它在水平方向的宽度远比气区为小,可以把它近似地看成是一个面,锋面的肩以延伸至对流层顶。锋面和地面的交线称为锋给面坡度很小。一般为1/50一1/300,在锋面附近,和温度梯度很大,空气很不稳定,常有系统性配运动。暖湿气流沿着冷空气楔上升,由于绝热冷用,使暖气团中的水汽发生凝结形成降水。降才大小决定于水汽含量和大气稳定度。锋面的分莽较多:根据气团的来源,可分为冰洋锋、极锋和带锋;根据锋面上暖空气的铅直运动,可分为土和下滑锋;根据锋面出现的高度,可分为高空铂面锋。通常还根据锋面两侧冷暖气团的移动情石为冷锋、暖锋、静止锋和锢囚锋。冷锋为冷气目锋面向暖气团一侧移动的锋。冷锋天气随冷锋典槽的位置不同而改变,当冷锋位于高空槽前,贝出现在锋后,多为连续性降水。当冷锋接近高盆坏天气出现在地面锋附近,往往狂风暴雨雷电三但云雨区很窄,移动快,持续时间短。暖锋为旧推动锋面向冷气团一侧移动的锋,主要降雨天今生在锋前,往往伴有大范围的连续性降水,降才约300一400公里,若暖空气不稳定也可出现雷可性降水。静止锋为移动很慢、南北摆动或短时闰移动的锋,常形成宽广的云雨区,降雨持续时间l每年春末夏初随着暖空气增强北进,南下冷锋件淮、华南一带趋于静止形成静止锋。当低空有幻配合,静止锋上有气旋波生成时,能产生大范围后锢囚锋为冷锋赶上暖锋或是两条冷锋迎面相遇,空气抬到高空而形成的新锋面。降雨发生在锢区两侧,这不仅是由原来的两条锋面造成的,而上锋面相遇,使暖空气抬升作用进一步加强的结牙 (林荣
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