The remaining islands with primary rain forest: A global resource

Islands with large tracts of primary rain forest constitute a distinct complex of terrestrial and marine ecosystems with global significance because of high levels of biological richness or, in the case of oceanic islands, the evolutionary distinctiveness of the organisms that they support. The myriad of small habitat units makes these settings particularly prone to fragmentation and thus problematic for the conservation of biological diversity. Most of the remaining examples of islands with primary rain forest are in the Pacific Rim, particularly in Indonesia, and there are threats from intensive timber harvesting, mining, tourism, and dismemberment of traditional convervation systems. Prospects for inventorying, monitoring, and protecting the remaining islands with relatively pristine successional mosaics of humid forest and shallow marine habitats within a framework global monitoring are explored. Recommendations are made for a program of expanded use of the biosphere reserve designation for rain forest islands and adjacent marine areas.     

Applications of Numerical Sediment Quality Targets for Assessing Sediment Quality Conditions in a US Great Lakes Area of Concern

Contaminated sediments are receiving increasing recognition around the world, leading to the development of various sediment quality indicators for assessment, management, remediation, and restoration efforts. Sediment chemistry represents an important indicator of ecosystem health, with the concentrations of contaminants of potential concern (COPCs) providing measurable characteristics for this indicator. The St. Louis River Area of Concern (AOC), located in the western arm of Lake Superior, provides a case study for how numerical sediment quality targets (SQTs) for the protection of sediment-dwelling organisms can be used to support the interpretation of sediment chemistry data. Two types of SQTs have been established for 33 COPCs in the St. Louis River AOC. The Level I SQTs define the concentrations of contaminants below which sediment toxicity is unlikely to occur, whereas the Level II SQTs represent the concentrations that, if exceeded, are likely to be associated with sediment toxicity. The numerical SQTs provide useful tools for making sediment management decisions, especially when considered as part of a weight-of-evidence approach that includes other sediment quality indicators, such as sediment contaminant chemistry and geochemical characteristics, sediment toxicity, and benthic macroinvertebrate community structure. The recommended applications of using the numerical SQTs in the St. Louis River AOC include: designing monitoring programs, interpreting sediment chemistry data, conducting ecological risk assessments, and developing site-specific sediment quality remediation targets for small, simple sites where adverse biological effects are likely. Other jurisdictions may benefit from using these recommended applications in their own sediment quality programs.     

皖东地区野韭菜的开发与利用

文章介绍了野韭菜的基本生物特性，综合分析了其食用价值和潜在的药用价值，提出了野韭菜开发利用的基本对策。     

区域环境管理体系认证带来的巨大优势

本文通过介绍秦皇岛经济技术开发区进行环境管理体系认证后发生的种种变化,阐述了区域环境管理体系认证给秦皇岛经济开发区带来的巨大变化。开展区域环境管理体系认证的好处主要体现在:提高了区域竞争力和招商引资的条件;有利于实现区域环境与经济的协调发展;促进了区内企业部分管理水平的提高;增强了全区员工的环境意识;对企业环境管理起到了推动作用。     

武陵山区猕猴桃产业化发展探讨

武陵山区猕猴桃生产已显现出产业化发展的前景,但仍然存在基地规模发展、龙头企业品牌创立和市场开拓、科研单位研究开发的协调联动问题,解决的途径在于协调公司、基地农户、科研单位诸方面的利益.     

高层建筑火灾避难区烟控设计的几个问题

高层建筑发生火灾后，保护人员的安全是个十分重要的问题。把楼内的一定区域设计为避难区或安全区，并对该区进行正压送凤，可以防止火灾烟气进入，从而使人们免受烟气的影响。本文讨论了避难区内外压差的计算方法，指出此压差取在２５－８５Ｐａ范围内为宜，分析了外界风速、建筑物的窗户破裂及门的开启或关闭对压差产生的影响，并对间接加压方案作了探讨．     

Tourism impacts of Three Mile Island and other adverse events: Implications for Lincoln County and other rural counties bisected by radioactive wastes intended for Yucca Mountain

Whether the proposed Yucca Mountain nuclear waste repository system will adversely impact tourism in southern Nevada is an open question of particular importance to visitor-oriented rural counties bisected by planned waste transportatin corridors (highway or rail). As part of one such county's repository impact assessment program, tourism implications of Three Mile Island (TMI) and other major hazard events have beem revisited to inform ongoing county-wide socioeconomic assessments and contingency planning efforts. This paper summarizes key research implications of such research as applied to Lincoln County, Nevada. Implications for other rural counties are discussed in light of the research findings.     

山东省莱州湾地区海水入侵灾害及其综合防治

本文在分析山东省莱州湾地区海水入侵灾害发生的背景、条件、原因及未来发展趋势的基础上，结合当地防治海水入侵灾害的经验。提出了综合防治海水入侵灾害的措施。向莱州湾地区调黄河水是防治海水入侵的关键；建设防潮堤、防潮闸可以防止海水地表入侵；充分发挥政府的职能是防治海水入侵灾害的基本保证。文中还提出了综合防治海水入侵的其它措施。     

基于SDS结构理论建构和谐环巢湖旅游带

建构和谐社会是可持续发展战略的目标。从可持续发展系统层次结构与旅游区发展的关系出发,以和谐思想为支撑,解析建构环巢湖带过程中的非和谐阻力,提出建构和谐环巢湖旅游带的战略响应原则和战略响应举措,为相关部门积极主动、科学合理地规避规划、开发、经营和管理中来自各方的非和谐阻力,以期为打造一个体现和谐、健康、可持续发展的环巢湖旅游带提供一定的借鉴作用。     

生态影响评价在旅游景区中的应用--以中山陵园风景区外缘景区为例

采用生态影响评价的工作方法，以中山陵园风景区外缘景区为例，在分析外缘景区生态现状的基础上，从土地利用与水土流失状况、森林群落状况、生物多样性、生态系统等方面对规划产生的生态影响进行了评价，得出外缘规划的实施总体上有利于景区生态可持续发展的结论，最后对评价中有待改进的方面做了几点探讨。