大型底栖动物污染指数(MPI)

根据2000年至2002年在深圳湾、厦门西海域、罗源湾、兴化湾潮间带和潮下带获得的85个取样站次大型底栖动物数据，参考丰度生物量比较法(ABC)，建立了评价海洋环境质量的大型底栖动物污染指数(MPI)．MPI的计算式是：MPI=10^(2 k)[∑(Ai—Bi)]/S^1 k，式中Ai和Bi分别是密度和生物量优势度大小顺序的第i个累积百分优势度的数值，S为采集到的物种数，K为常数，K=|∑(Ai-Bi)|/∑(Ai-Bi)，当∑(Ai—Bi)为正数时，K=1:∑(Ai-Bi)为负数时，K=-1．MPI越小。沉积环境越清洁．反之，污染越严重．MPI的优点是实现ABC法的数字化，而且反应灵敏，评价结果比种类多样性指数(H)更符合实际．     

番茄某些繁殖特性对增强UV-B辐射的响应

研究了增强UV-B辐射对大田生长的两种番茄(早熟型“同辉”和晚熟型“霞光”)某些繁殖特性(最大开花数、花粉萌发和花粉管伸长、果实产量、果实品质以及子代种子的数量和质量)的影响.结果表明,与对照相比,“同辉”开花数在高辐射下增加,“霞光”开花数在低辐射下减少;“同辉”果实产量在两种辐射下都明显增加,而“霞光”果实产量只在低辐射下增加;辐射抑制了“同辉”的花粉萌发和花粉管伸长,而只是降低了“霞光”的花粉萌发率;强辐射造成两种番茄果实番茄红素下降。经过一季的增强UV-B辐射处理,“同辉”种子数量增加,低辐射下种子明显变小;“霞光”种子数量减少,且明显变小.就开花数、果实产量和种子质量而言,早熟的“同辉”品种更具抗性,而晚熟的“霞光”更敏感.图3表1参29     

径向浓淡旋流煤粉燃烧器直流二次风对流场及NO_x排放的影响

针对径向浓淡旋流煤粉燃烧器直流二交风对出口冷态流动特性的影响进行了试验研究，并在一台２２０ｔ／ｈ锅炉和一台６７０ｔ／ｈ锅炉上进行了工业性试验。冷模试验表明，直流二次风对旋流燃烧器出口气流的流动和混合特性有重要影响。     

Blind identification of active landslides in urban areas: a new set of comprehensive criteria

Environmental Science and Pollution Research - More than 70% of catastrophic landslides were previously unknown and brought tremendous losses to human life and property in urban regions; therefore,...     

Bacterial diversity and distribution in the southeast edge of the Tengger Desert and their correlation with soil enzyme activities

The nature of microbial communities and their relation to enzyme activities in desert soils is a neglected area of investigation. To address this, the bacterial diversity and distribution and soil physico-chemical factors were investigated in the soil crust, the soil beneath the crust and rhizosphere soil at the southeast edge of the Tengger Desert, using the denaturing gradient gel electrophoresis of 16S rRNA genes amplified by the polymerase chain reaction. Phylogenetic analysis of the sequenced DGGE bands revealed a great diversity of bacteria. The Proteobacteria, consisting of the α, β, and γ subdivisions, were clearly the dominant group at all depths and in rhizosphere soil. Analysis of the enzyme activities indicated that the rhizosphere soil of Caragana korshinskii exhibited the highest protease and polyphenol oxidase activities, and in the soil crust there were increased activities of catalase, urease, dehydrogenase and sucrase. The bacterial community abundance closely correlated with soil enzyme activities in different soils. The presence of Cyanobacteria correlated with significant increases in protease, catalase and sucrase in the soil crust, and increased urease in the rhizosphere soil of Artemisia ordosica. The occurrence of Acidobacteria was associated with significant increases in urease, dehydrogenase, and sucrase in the rhizosphere soil of C. korshinski. The presence of γ-Proteobacteria correlated with a significant increase in polyphenol oxidase in the rhizosphere soil of A. ordosica. The study indicated a close relationship between the soil bacterial community and soil enzymes, suggesting the necessity of further investigations into bacterial function in this desert ecosystem.     

深圳河口泥滩多毛类动物的生态研究

１９９６年在深圳河口潮间带泥滩的４个季度调查共获得多毛类动物１６种。与大亚湾大鹏澳软相潮间带和九龙江口海岸潮间带多毛类相比，深圳河口潮间带泥滩多毛类种类较少，但密度和生物量较高，这与底质、有机质含量，红树林碎屑等有关，潮汐对深圳河口潮间带泥滩多毛类垂直分布的影响不明显。一些多毛类动物密度和生物量的水平分布与盐度有关。     

菲律宾蛤仔对锌、铅的积累特征

菲律宾蛤仔（ＲｕｄｉｔａｐｅｓｐｈｉｌｉｐｐｉｎａｒｕｍＡｄａｍｓｅｔＲｅｖｅ（Ｂｉｖａｌｖｉａ：Ｖｅｎｅｒｉｄａｅ））分别在不同系列Ｚｎ和Ｐｂ浓度下培养２０ｄ，每间隔５ｄ测定菲律宾蛤仔体内Ｚｎ、Ｐｂ含量．结果表明，菲律宾蛤仔在水体Ｚｎ浓度１００μｇ／Ｌ以下Ｚｎ积累量低，在水体Ｚｎ浓度为２００μｇ／Ｌ时Ｚｎ积累量高．菲律宾蛤仔在水体Ｐｂ浓度为３２μｇ／Ｌ以下暴露５ｄＰｂ积累量低，但在水体Ｐｂ浓度为３２μｇ／Ｌ中暴露１５ｄ，菲律宾蛤仔体内Ｐｂ含量可达对照组的５倍．可见，菲律宾蛤仔对Ｚｎ、Ｐｂ的积累量不仅与水体中Ｚｎ、Ｐｂ浓度有关，而且与暴露时间有关．     

西安高新区公园景观水体再生水利用水质标准研究

以西安高新区内一处公园景观水体利用再生水为例,分析了目前国内再生水利用水质标准的选择性控制指标,并与再生水设计处理水质进行对比,提出了要进一步改进再生水处理设施保障用水安全的建议。     

白腐真菌菌丝球形成的物化条件及其对铅的吸附

为了探讨影响微生物菌丝球生长的物理化学因素和控制菌丝球大小的规律以及微生物吸附重金属的效果,对黄孢展齿革菌（Ｐｈａｎｅｒｏｃｈａｅｔｅｃｈｒｙｓｏｓｐｏｒｉｕｍ）呈球状体生长和用此菌丝球吸附水溶液中的Ｐｂ＾２＋进行了研究。