富裕县杨树害虫发生危害情况及综合治理对策

介绍了富裕县杨树害虫发生危害情况,2004年有害生物普查中杨树蛀干害虫侵害面积达11333hm2,食叶害虫每年发生面积达3333hm2以上.针对这些虫害,提出了加强监测、强化检疫、清理虫源木、化学防治等治理对策.     

镉对沉水植物硝酸还原酶和超氧化物歧化酶活性的影响

研究了重金属污染物镉对４种沉水植物（红线草，金鱼藻，黑藻和菹草）硝酸还原酶和超氧化物歧化酶的分子毒理学效应。实验结果表明，一定浓度的镉能诱导沉水植物的硝酸还原酶活性，抑制沉水植物超氧化物歧化酶活性，从而破坏其抗氧化防御系统。镉对沉水植物的毒害存在明显的剂量／效应关系。建议以硝酸还原酶和超氧化物歧化酶的活性变化作为沉水植物受重金属污染的生态毒理学指标。     

Level of coordinated development in economy and environment

ＬｅｖｅｌｏｆｃｏｏｒｄｉｎａｔｅｄｄｅｖｅｌｏｐｍｅｎｔｉｎｅｃｏｎｏｍｙａｎｄｅｎｖｉｒｏｎｍｅｎｔＺｈａｎｇＱｉｄｅ，ＷａｎｇＹｕｘｉｕ，ＲｅｎＪｉｎｓｏｎｇＬｉａｏｎｉｎｇＩｎｓｔｉｔｕｔｅｏｆＥｎｖｉｒｏｎｍｅｎｔＰｒｏｔｅｃｔｉｏｎＳｃｉ...     

Pollution characteristics and potential ecological risk assessment of metals in the sediments of Xiaoqing River,Jinan

Environmental Science and Pollution Research - The spatial–temporal changing characteristics and potential ecological risk combined with local policies and industrial status were analyzed....     

宜兴市土地利用类型与水生态健康相关性研究

利用宜兴市2012年-2014年土地利用数据、水生态健康等相关数据,引用土地利用动态度和土地利用综合程度指数,对土地利用变化和水生态健康现状进行分析,运用相关性分析法测算土地利用类型比例与水生态健康主要指标的相关性.结果表明:耕地、建设用地比例与水生态健康综合指标负相关,湿地、草地、园地、林地用地比例与水生态健康综合指标正相关;建设用地比例与底栖动物负相关;湿地用地比例与营养、底栖动物指标正相关较强.     

地方环境立法中若干关系问题的探讨

根据我国宪法和地方组织法等的规定,对地方环境立法中的若干关系问题,从理论和实践的结合上作了探讨。     

都江堰市红色村干沟泥石流活动特征及危险性评估

"5·12"四川汶川大地震导致灾区地质灾害危险性大大增强,严重影响了周边居民的生命财产安全。都江堰市虹口乡红色干沟泥石流灾害隐患点是其中之一。根据泥石流的成因、类型、规模,以及泥石流的活动特征,对泥石流活动进行了危险性评估,指出泥石流防治工程方案应采用以排为主,适当拦挡的原则,建拦挡坝用以消能、调节泥石流流量;建防护堤用以限制泥石流漫流,对居民区进行有效防护。     

黄磷尾气现场脱硫试验

黄磷尾气的主要成分是CO，其中含硫杂质主要以硫化氢的形式存在。测定了黄磷尾气中硫化氢、氧气的含量，分别采用吸收、吸附工艺及其组合工艺对黄磷尾气进行了现场脱硫试验，得出了最佳的黄磷尾气净化脱硫工艺，即吸收、活性炭变温吸附。出口气中H2s的质量浓度为1—5mg/m^3，净化效率达到99．7％。     

Growth responses of the newly-discovered Cd-hyperaccumulator Rorippa globosa and its accumulation characteristics of Cd and As under joint stress of Cd and As

Rorippa globosa has been identified as a newly-found Cd-hyperaccumulating species. In the present study, growth responses of Rorippa globosa and its accumulation characteristics of Cd and As were examined under joint stress of Cd and As. The results showed that Cd and As had an antagonistic effect on enhancing the growth of Rorippa globosa plants and Cd uptake and accumulation under the low concentration Cd and As treatments. When the concentration of Cd in the soil was 10 mg/kg and the concentration of As was 50 mg/kg, the highest growing height of the plant was up to 35.9 cm and the dry weight of the shoots was up to 2.2 g/pot, respectively. Meanwhile, the accumulation of Cd in the leaves under the joint stress was higher than that at the same level under single Cd pollution. However, there were synergic adverse effects on plant growth and Cd uptake under the combined pollution from a high concentration of Cd and As. Meanwhile, the accumulation of As in the roots was greater than that in the shoots, the translocation factor (TF) was ?0.3 and the bioaccumulation factor (BF) was ?0.6, thus showing that Rorippa globosa had an excluding effect on As uptake. These results confirmed that Rorippa globosa had a strong tolerant ability to the joint stress of Cd and As, and the potential for phytoremediation of soils contaminated by Cd and As.