温泉宾馆室内PM_(10),PM_(2.5),CO_2和~(222)Rn的研究

对广东省 4座温泉宾馆室内外氡(222Rn)浓度和温泉水氡浓度进行研究,同时利用便携式探测器对室内外 PM10,PM2.5,CO2和CO 等污染物暴露水平进行直接测定.结果表明,温泉宾馆室内使用温泉水时氡浓度明显高于广东省室内平均氡浓度.除 CO 外,室内 PM10,PM2.5 和CO2 浓度都较高,其中 PM10 和 CO2 的超标率分别达到 67%和 89%.说明温泉宾馆室内不仅存在一般性污染物,而且存在高浓度的 Rn. 222     

国外旅游资源评价研究进展

在国外有关旅游资源评价文献的基础上,从旅游资源的视觉质量评价、人类文化遗产价值评价和货币价值评价3个方面对国外旅游资源评价主要研究进展进行综述,并为我国旅游资源评价的理论研究和实践应用提供参考。     

Influence of new town development on the urban heat island - The case of the Bundang area

Five new towns have been developed around the Seoul metropolitan area since 1996. However, these new towns generate lots of traffic and related problems in the areas including those new towns and Seoul as a result of increases in population and a lack of ecological-self-sufficiency. Currently, construction of another new town is under deliberation, and what should be a major consider is the notion that the new town be located within a wide, green zone. Many studies have revealed that green space can play an important role in improving urban eco-meteorological capability and air quality. In order to analyze the urban heat island which will be created by the new urban development, and to investigate the local thermal environment and its negative effects caused by a change of land use type and urbanization, Landsat TM images were used for extraction of urban surface temperature according to changes of land use over the last 15 years. These data are analyzed together with digital land use and topographic information. As a study result, it was found the urban heat island of the study area from 198.5 to 1999 rapidly developed which showed a difference of mean temperature above 2.0. Before the Bundang new town construction the temperature of the residential area was the same as a forest, but during the new town construction in 1991 analysis revealed the creation of an urban heat island. The temperature of a forest whose size is over 50% of the investigation area was lowest, and thus the presence of a forest is believed to have a direct cooling effect on the urban environment and its surroundings. The mean temperature of the residential and commercial areas in the study was found to be 4.5 higher than the forest, and therefore this part of land use is believed to be the main factor causing the temperature increase of the urban heat island.     

Reuse rate of treated wastewater in water reuse system

A water quality model for water reuse was made by mathematics induction. The relationship among the reuse rate of treated wastewater（R）, pollutant concentration of reused water（ Cs ）, pollutant concentration of influent（ C0）, removal efficiency of pollutant in wastewater（ E）, and the standard of reuse water were discussed in this study. According to the experiment result of a toilet wastewater treatment and reuse with membrane bioreactors, R would be set at less than 40%, on which all the concerned parameters could meet with the reuse water standards. To raise R of reuse water in the toilet, an important way was to improve color removal of the wastewater.     

玉溪市环境空气质量及污染物分布状况研究

分析了2002年玉溪市各县区县城环境空气质量状况和污染特征 提出应采取措施,减轻SO2,对城市大气的污染。     

呼和浩特市空气污染潜势预报方法研究

利用1995～1997和2000年资料，统计分析了呼市边界层气象条件和影响呼市地区的天气系统，寻找出了城市污染与天气的关系，据此研究制定了有利和不利于污染物扩散的天气形势和气象要素指标，给出了不同污染物的空气质量等级判据，从而建立了呼市污染潜势预报方法。     

环境空气污染预报及其意义

由我国在１３个重点城市开展环境空气污染周报出发，综述国内外环境空气污染预报的情况，指出环境空气污染预报的三方面重要意义。     

京津地区能源、大气污染物扩散对区域元素循环的作用

对京津区域１９８０－１９９２年间能源利用状况进行分析，并通过模式计算该区域大气污染物的扩散规律，结果表明，大气污染物随能源利用增加而增加，其增加速率ＮＯｘ大于ＯＳ２，经预测，至２００４年京津地区ＳＯ２排放量增咖１１．４０％，ＮＯｘ增加５６．８０％，由于气象和地形条件所致，该区域内不利于大气污染物远距离输送，这使箱型区域内物料平衡计算可以简化。     

云南空气中TSP的现状与控制

云南省１９９０￣１９９６年１７个城镇的ＴＳＰ污染水平一直在０．２０ｍｇ／ｍ＾３左右波动，比较平稳。将年平均浓度值与超标率相比较，历年来ＴＳＰ的污染程度变化不大，但污染面有逐年扩大的趋势。因此，为提高空气质量达标率，必须加强管理和技术方面的措施。     

事故出流时河流综合水质的计算机预测方法研究

河流上游的污水排放口或倒虹管等污水构筑因有可能发生事故出流而对下游的取水口存在着潜在的威胁，常规的单参数模型不能就事故出流对下游的影响作出公正评价。本文以QUAL－Ⅱ模型为骨架，以生动形象的动画形式演示出在整个排污过程中多个水质参数沿河道分布的变化全过程，并且，在模型中融入隶属度BP神经网络综合评价水质的模块，用它来对发生事故出流时下游取水口水域的水质变化进行综合评价，最后通过一个例子说明了该方法的优越性和合理性。