城郊道路交通污染个例分析

为建立和研究适合地面道路的宽路幅、高等级、支路多等特点的大城市城郊道路交通大气污染扩散模式,选取了受环境外来源影响较小的上海市沪青平公路的徐泾段,作交通大气污染实测和相关气象因子项目的观测。在获得详细实测结果的基础上,以NOx为例分析了大气稳定度、风向、风速、交通量对城郊地面道路交通污染扩散的影响。     

Environmental impact of China''''s village and township industry(1988-1992): a comparison with urban industry

１ＩｎｔｒｏｄｕｃｔｉｏｎＶｉｌａｇｅａｎｄｔｏｗｎｓｈｉｐｉｎｄｕｓｔｒｙ（ＶＴＩ）ｉｓｂｅｃｏｍｉｎｇａｖｅｒｙｉｍｐｏｒｔａｎｔｃｏｍｐｏｎｅｎｔｏｆＣｈｉｎａｓｅｃｏｎｏｍｙａｎｄｅｎｖｉｒｏｎｍｅｎｔ．Ｉｎ１９９２，ＶＴＩｐｒｏｄｕｃｅｄ...     

减排温室气体的经济手段：许可证交易和税收政策

温室气体的减排是当前国际社会关心的热点环境问题。本文首先从分析采用经济手段减排温室气体的潜在利弊出发，对温室气体排放交易和国际碳税进行了深入的分析比较。最后，提出了我国响应减排温室气体经济政策的若干建议。     

磺酰脲类除草剂的残留分析

磺酰脲类除草剂是一类新型超高效除草剂，大约包括２Ｖ化合物，已被广泛用于禾谷作物防除阔叶杂草以及某些禾本科杂草，该类除草剂在环境中的残留浓度〈１μｇ．ｋｇ＾－１水平。常规的分析方法包括生物鉴定，酶免疫分析，气相色谱法和高效液相色谱法（ＨＰＬＣ）、ＨＰＬＣ／ＭＳ联用后，可以准确测定复杂环境样中磺酰脲类除草剂的痕量残留。     

The study for polyaromatic hydrocarbons decay on Chinese coal soot particles in atmosphere

A study for the photochemical behavior of some polyaromatic hydrocarbons (PAH), for example B(a )P, B( k )F and fluoranthene in coal smoke particles was performed by using indoor Teflon smog chamber.Experiments suggest that the photochemical reaction of PAH is first order reaction and kinetic rates of some PAH were obtained. It was shown that the reaction rate constant is proportional to light intensity and water vapor concentration. Temperature and PAH loading also have influence on PAH decay rate. A model for PAH loss has been set up on the basis of the results of our experiments and the simulating results of this model suggest that coal particle PAH half lives are of the order of a period of days in winter and a few hours in summer. Other factors which may have effect on the photochemical reaction of PAH have also been discussed.     

The hierarchy and spatial characteristics of ecosystems: A reconsideration of the ecosystem concept (II)

This paper, based on the autonomy concept, continues to investigate hierarchical forms and spatial structure of ecosystems. The former can lead to limits for the selection of the component parts of an ecosystem and a distinction between its endogenous and exogenous variables; and the latter can be lead to a hypothesis of the space of an ecosystem: the space of an ecosystem = its habitat area + supporting area + impact area, and two characteristics of ecosystems, space-overlapping and the area of ecosystem space, have been further studied referring to human activities.     

人工湿地植物在污水处理系统中的作用探讨

人工湿地污水系统由于具有独特的净化机理和功能而越来越多地被用于处理生活污水和工业废水.湿地植物在人工湿地中起着非常重要的作用,不但可以直接摄取和利用污水中的营养物质、吸收富集污水中的重金属等有毒有害物质;而且还能输送氧气到根区,提供根区微生物生长、繁殖和降解过程中对氧的需求.文章通过详细阐述植物对水中营养元素的吸收作用,说明了植物在人工湿地处理污水中的重要性.     

合肥台地电阻率干扰综述

本文首先叙述了合肥台地电阻率值ρS的观测环境,并根据合肥台近年几次ρS的异常变化,通过初步理论分析,找出了DD-1接地体、电缆沟开挖、大气降水、太阳黑子引起的自然电场对ρS的干扰,为以后排除和识别地电干扰起参考作用.     

Assay of some volatile compounds in human exhalation

ＡｓａｙｏｆｓｏｍｅｖｏｌａｔｉｌｅｃｏｍｐｏｕｎｄｓｉｎｈｕｍａｎｅｘｈａｌａｔｉｏｎＱｉｎＴａｏ，ＸｕＸｉａｏｂａｉＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏＥｎｖｉｒｏｎｍｅｎｔａｌＳｃｉｅｎｃｅｓ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅ...     

Progress in the research on aquatic environmental nonpoint source pollution in China

ＰｒｏｇｒｅｓｉｎｔｈｅｒｅｓｅａｒｃｈｏｎａｑｕａｔｉｃｅｎｖｉｒｏｎｍｅｎｔａｌｎｏｎｐｏｉｎｔｓｏｕｒｃｅｐｏｌｕｔｉｏｎｉｎＣｈｉｎａＢａｏＱｕａｎｓｈｅｎｇ，ＭａｏＸｉａｎｑｉａｎｇ，ＷａｎｇＨｕａｄｏｎｇＩｎｓｔｉｔｕｔｅｏｆＥｎｖｉｒｏ...