Urban ecological systems: scientific foundations and a decade of progress

Urban ecological studies, including focus on cities, suburbs, and exurbs, while having deep roots in the early to mid 20th century, have burgeoned in the last several decades. We use the state factor approach to highlight the role of important aspects of climate, substrate, organisms, relief, and time in differentiating urban from non-urban areas, and for determining heterogeneity within spatially extensive metropolitan areas. In addition to reviewing key findings relevant to each state factor, we note the emergence of tentative "urban syndromes" concerning soils, streams, wildlife and plants, and homogenization of certain ecosystem functions, such as soil organic carbon dynamics. We note the utility of the ecosystem approach, the human ecosystem framework, and watersheds as integrative tools to tie information about multiple state factors together. The organismal component of urban complexes includes the social organization of the human population, and we review key modes by which human populations within urban areas are differentiated, and how such differentiation affects environmentally relevant actions. Emerging syntheses in land change science and ecological urban design are also summarized. The multifaceted frameworks and the growing urban knowledge base do however identify some pressing research needs.     

Is ISO 14001 a gateway to more advanced voluntary action? The case of green supply chain management

Using Japanese facility-level data, we estimate the effects of ISO 14001 certification on the promotion of more advanced practices, namely green supply chain management (GSCM). Our results show that ISO 14001 promotes GSCM practices. Facilities with environmental management systems (EMS) certified to ISO 14001 are 40% more likely to assess their suppliers' environmental performance and 50% more likely to require that their suppliers undertake specific environmental practices. Further, government programs that encourage voluntary EMS adoption indirectly promote GSCM practices. These programs increase the probabilities that facilities will assess their suppliers' environmental performance and require suppliers to undertake specific environmental practices by 7% and 8%, respectively. Combined, these findings suggest that there may be significant but previously unnoticed spillover effects of ISO 14001 and government promotion of voluntary action.     

肇庆市饮用水水源地环境保护之现状

总结了肇庆市城镇、乡镇和农村饮用水水源地的调查情况,深入分析了影响各水源地水质情况的原因以及产生的影响,并此提出相应的环保建议和改善措施.     

"环保执法难"的问题与对策

从环保执法体制,环保执法法律,环保执法能力等方面简述了环保执法难的原因.指出应理顺环保执法体制,营造良好的执法制度环境.从环保执法的源头入手,完善环保立法.提高执法人员素质,加强执法技术装备,提高环保执法能力.突破现有的环保执法模式,按照可持续发展的现实需要,构建起政府控制与多种形式相结合的开放式的有效环保执法体制,从...     

浅谈四级环境监测站档案管理工作

简述了环境监测档案在环境保护、生态建设、社会经济发展中的重要价值,分析了当前四级环境监测档案管理中人员培养、信息化建设、保密管理等存在问题,提出,应完善档案管理设备,引进档案管理专业人才,落实档案管理职责,制定相关制度,加强档案密级管理,加快档案信息化建设.     

浙江省及杭州市电磁辐射环境污染源概况

介绍浙江省及省会城市杭州的电磁辐射环境污染源概况。浙江省现有各类污染源９３２４个，总功率４２４２ｋＷ；高压线（缆）５１３条，总长１１６０６ｋｍ；变电站３０４座；无轨电车３条。杭州市有各类污染源４２１０个，总功率２３６６ｋＷ；高压线（缆）８８条，长度１７２６ｋｍ；变电站５５座。分析了各类污染源的发展趋势。     

The relationships of sprawl and ozone air quality in United States' metropolitan areas

This article reports the results of an examination of the relationships between degree of sprawl and improvements in ozone air quality for 52 metropolitan areas in the US. It also examines state political alignment and environmental resources with regard to these two primary objects of investigation. Evidence of a relationship between sprawl and air quality improvement was identified, but the evidence is ambiguous. More research appears warranted to explore the sprawl–air quality improvement relationship. Electronic Publication     

燕山石化公司工业废渣填埋场环境现状分析

在简单介绍工业废渣填埋场工程、运行管理、填埋废物情况的基础上，对渣场及周边环境状况进行分析，并对今后工作提出改进建议。     

绿色壁垒的法律分析

面对我国国际贸易深受国外绿色壁垒影响的现状,我国应以国际规则坚决抵制贸易保护主义,制定绿色产品及其包装发展鼓励条例,并不断完善环境管理和绿色保障法律制度。     

绿色化学设计过程的定量化方法

通过对环境优先污染物的优化选择策略的研究，设计一种新的评价方法将化学物质对环境的影响定量化。具体先设计一个环境因子，尽量全面考虑到化学物质对环境的各种影响。用人力资本法对其进行经济评价，使最终通过化学物质的环境因子可得到定量化的经济影响。