环保法规变化对电力工业发展的影响

从电力需求、发电能源结构、发电能源布局、电力成本及发电技术等方面阐述了环保法规的变化和环境标准的制定对电力工业发展的影响,指出了研究环境保护法规和环境标准趋势的重要性和必要性.     

我国旅游业扩展带来的环境问题及对策

近年来,我国的旅游业得到了飞速发展,已经成为了一些地方的支柱产业.但由于经验缺乏和人们的一些错误观念,致使我国旅游业在扩展过程中带来了很多环境问题.在分析了这些环境问题的基础上,提出用环境管理学中的冲突协同理论来指导旅游业的环境管理工作,并对具体环境管理对策进行了讨论.     

基于全过程控制的铁路建设项目生态环境保护发展状况评估

铁路建设项目的生态环境影响在其全生命周期内各时期有不同的表现形式.在阐述不同时期应重点关注的生态环境保护问题的基础上,从全过程控制角度,建立了涵盖前期规划、建设期、运营期3个阶段的铁路建设项目生态环境保护发展状况评估指标体系,运用层次分析法对各指标进行权重评定.根据权重计算结果对铁路建设项目生态环境保护工作中重要时期及...     

锑的表生地球化学行为与环境危害效应

锑(Sb)是一种典型的有毒有害重金属元素。由于自然过程和人为活动的影响,锑及其化合物广泛分布于大气、土壤、水体等表生环境中,锑的环境污染日益严重。Sb不是植物必需元素,但能够被植物体及农作物吸收。Sb对人体和动物体产生慢性毒性及潜在致癌性。本文主要通过分析Sb的主要矿物、锑及其化合物在表生环境中的分布与迁移特性,来阐述人体可能的锑暴露途径及由此产生的环境危害效应。     

医药厂环境影响评价的清洁生产分析

介绍了清洁生产的涵义和评价内容,探讨并建立了医药厂环境影响评价清洁生产分析的指标体系、指标权值和评价方法,以海南某医药厂为分析对象,对该厂环境影响评价进行了有效而全面的清洁生产分析,提出了医药厂环境影响评价清洁生产分析的建议,是医药厂环境影响评价清洁生产分析的一次新尝试.     

澳门特别行政区土壤自然消减能力与污染背景

澳门是我国人口密度最大的城市.选择澳门特别行政区不同功能区绿地土壤为研究对象,首先,通过野外布点采样,调查分析了表层土壤中9种重金属元素(Cr、Ni、Cu、Cd、Pb、Cr、Zn、As、Hg)和16种优先控制多环芳烃(PAHs)的分布特征;其次,利用累积频率分布曲线法估算了土壤重金属和PAHs的土壤污染背景;最后,基于...     

Return to the River: Environmental Flow Policy in the United States and Canada1

Abstract: This paper provides an overview and summary of United States and Canadian federal, state, and provincial laws that offer some form of legal protection for environmental flows. Special attention is given to the new “second generation” law established in Texas and to ways western states are beginning to encourage transactions that help restore dewatered streams. Progress in the eastern states and some Canadian provinces to provide environmental flow protection is addressed. Based on this review, this paper presents recommended elements of a “model” environmental flow policy.     

电极移动速度效应检测仪系统的研究

分析了国际静电放电测试研究领域现有的各种测试研究装置特点，为克服已有测试装置缺陷本团队研发设计出一种全新的静电放电测试研究系统—电极移动速度效应检测仪。对其结构设计特点、功能进行了分析。我们研制的新型静电放电测试系统兼具实现真实直线运动准确调节和多环境因素可控的优点，彻底解决了困扰国际电磁兼容静电放电研究领域电极需高速向靶移动放电与避免强烈撞击损坏仪器的难题，实现了对多种因素影响逐一准确控制，为静电放电性质更为深入广泛的研究提供了新的手段和平台。     

提高建设项目环境影响评价质量的对策建议

针对目前我国环评机构鱼龙混杂,环评从业人员素质良莠不齐,建设项目环评质量亟待提高等问题,本文就环评过程中存在的问题和不足进行剖析,并就如何提高建设项目环评质量提出对策建议。     

Integrating Paleobiology,Archeology, and History to Inform Biological Conservation

The search for novel approaches to establishing ecological baselines (reference conditions) is constrained by the fact that most ecological studies span the past few decades, at most, and investigate ecosystems that have been substantially altered by human activities for decades, centuries, or more. Paleobiology, archeology, and history provide historical ecological context for biological conservation, remediation, and restoration. We argue that linking historical ecology explicitly with conservation can help unify related disciplines of conservation paleobiology, conservation archeobiology, and environmental history. Differences in the spatial and temporal resolution and extent (scale) of prehistoric, historic, and modern ecological data remain obstacles to integrating historical ecology and conservation biology, but the prolonged temporal extents of historical ecological data can help establish more complete baselines for restoration, document a historical range of ecological variability, and assist in determining desired future conditions. We used the eastern oyster (Crassostrea virginica) fishery of the Chesapeake Bay (U.S.A.) to demonstrate the utility of historical ecological data for elucidating oyster conservation and the need for an approach to conservation that transcends disciplinary boundaries. Historical ecological studies from the Chesapeake have documented dramatic declines (as much as 99%) in oyster abundance since the early to mid‐1800s, changes in oyster size in response to different nutrient levels from the sixteenth to nineteenth centuries, and substantial reductions in oyster accretion rates (from 10 mm/year to effectively 0 mm/year) from the Late Holocene to modern times. Better integration of different historical ecological data sets and increased collaboration between paleobiologists, geologists, archeologists, environmental historians, and ecologists to create standardized research designs and methodologies will help unify prehistoric, historic, and modern time perspectives on biological conservation. Integración de Paleobiología, Arqueología e Historia para Informar a la Biología de la Conservación