模拟矿井水中部分离子对蚕豆遗传性损伤的研究

用矿井水作蚕豆微核实验,讨论了F^-、Hg^2＋和Cr^6＋单一及复合污染对蚕豆微核的影响。结果表明,F^-、Hg^2＋和Cr^6＋单一污染均对微核产生显著影响,随着氟化物浓度和Cr6＋浓度的增加,微核率呈上升趋势;随着Hg^2＋和Cr^6＋浓度增加,微核率呈先上升后下降的趋势。两因子方差分析显示,F^-和Hg^2＋复合污染对蚕豆微核率有显著影响。     

沈阳市人工河渠污染特征与防治对策

沈阳市运河和细河为典型人工河渠,对其污染特征和规律进行了研究和探讨,对历年的整治措施和效益进行了评述,针对生态城市建设的需要,对人工河渠未来的建设目标和对策进行展望,本文侧重论述了城市相关排污因素对人工河渠的影响以及必然经历的整治进程,对于生态城市水系建设和水环境质量改善的重点进行了概述分析。     

江苏长江口毗邻海域污染现状及防治计划

介绍了江苏长江口毗邻海域的规划范围,对规划范围内的工业污染源排放量、城市与农村生活污染源排放量、农业污染源排放量进行了计算,得出江苏长江口毗邻海域污染物COD,TN,TP的主要来源,并提出了相应的污染防治计划。     

电动自行车用铅酸电池污染问题及对策的思考

叙述了目前我国城市电动自行车迅猛发展所带来的铅酸电池污染问题,分析了在城市大量使用铅酸电池所造成污染的危害性,并在此基础上提出了解决该污染问题的一些对策。     

世界封存CO_2驱油的现状与前景

"碳捕捉与封存"技术有助于减少温室气体排放和控制全球变暖,评述了世界可深层封存CO2的潜力,世界各国封存CO2提高油田采收率的现状和发展趋势,以及中国CO2驱油的前景。     

大山包湿地景观保护与开发的对策研究

针对大山包湿地的保护价值及其在黑颈鹤保护中的重要地位,提出了如何合理进行湿地景观的保护与开发,以确保湿地生态系统可持续性发展。     

长江口污染控制区划分研究

为摸清长江口总体污染情况,通过查阅大量的文献资料,从地理位置、污染程度、海洋功能等方面对长江口污染控制区进行了划分;按地理位置把长江口分为南支、北支、南北港、南北槽4个污染控制区,按污染程度从长江口内向东依次分为严重污染海域区、中度污染海域区、轻度污染海域区、较清洁海域区和清洁海域区,按照海洋功能标准把长江口划分为港口航运区、渔业资源利用和养护区、旅游区、海水资源利用区、海洋保护区、特殊利用区、工程用海区和保留区。研究初步分析了长江口的总体污染现状,为长江口将来的环境规划、治理、发展和建设提供参考。     

Adding virtual measuring stations to a network for urban air pollution mapping

Maps of pollutants concentration are usually generated by means of interpolation and extrapolation methods. The quality of the results depends mainly of the number of permanent or temporary measuring stations. This paper deals with a method for the virtual densification of the network of stations. The method creates "virtual measuring stations". It aims at improving the quality of interpolation by increasing the number of data on pollutant concentration. The virtual stations are determined by the means of a classification method applied to each pixel of the area under concern. Discriminating elements are pollutants emission classes, land cover types, urban morphological indicators created to this purpose and distance to major roads. A first implementation was made for particulate matter (PM) for the city of Strasbourg (France) using thin-plates spline interpolation method in Arcview 9 GIS. The relative Root Mean Square Error decreases from 49% for five input stations down to 15% for the virtual stations.     

Melanin- and carotenoid-dependent signals of great tits (<Emphasis Type="Italic">Parus major</Emphasis>) relate differently to metal pollution

Due to their high phenotypic plasticity, the expression of secondary sexual characteristics is particularly sensitive to stress. Here, we investigated the expression of two conspicuous visual signals in great tits (Parus major) in a metal pollution gradient. In three study sites with marked differences in metal contamination (mainly lead, cadmium, copper and zinc), we compared melanin and carotenoid colouration of great tits. While carotenoid colouration (yellow breast) was negatively related to metal pollution, the size of a melanin trait (breast stripe) was larger in the most polluted sites. Environmental pollutants not only affect the expression of conspicuous signals but may even enhance, directly or indirectly, a signal of male quality such as breast stripe. Our results also support the multiple messages hypothesis predicting that different signals highlight different aspects of geno- and phenotypic condition of the bearer.     

漕桥河区域水环境质量现状分析

介绍了漕桥河区域水系概况、武宜运河、太涡运河与漕桥河的水流关系;对漕桥河全线6个例行监测断面、武宜运河钟溪大桥断面、太涡运河分水新桥断面及漕桥河沿线37个支浜的水环境质量现状进行了详细介绍,得出漕桥河及周围河网以氮磷污染为主、两岸河浜的汇水使漕桥河水质下降、武宜运河来水影响漕桥河上游水质、太涡运河来水影响漕桥河下游水质的主要结论,为漕桥河的水环境综合整治奠定了基础,也为其它入湖河流水环境综合整治规划的章节编制提供一定参考。