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981.
982.
文中总结宿迁经济开发区环保工作现状,分析未来宿迁经济开发区面临:水环境质量未能根本好转、生活污染物排放量上升并成为主要污染问题、环境基础设施建设滞后于社会经济发展、工业企业污染存在反弹趋势、农村环境问题亟需关注、客水污染问题仍然存在等挑战,并提出了应对这些挑战的对策。 相似文献
983.
在文化旅游领域,文化与旅游产业的融合与互动发展已成为新的趋势,产生了良好的经济效益和社会效益。以文化旅游产业融合发展为题,联系产业分工理论、产业组织理论、战略管理理论等,结合文化及旅游产业自身的特征,对文化旅游产业融合的动因、融合机制和融合背景下如何进行政府规制改革等问题进行了分析。 相似文献
984.
JULIEN MARTIN PAUL L. FACKLER JAMES D. NICHOLS MICHAEL C. RUNGE CAROL L. McINTYRE BRUCE L. LUBOW MAGGIE C. McCLUSKIE JOEL A. SCHMUTZ 《Conservation biology》2011,25(2):316-323
Abstract: Unintended effects of recreational activities in protected areas are of growing concern. We used an adaptive‐management framework to develop guidelines for optimally managing hiking activities to maintain desired levels of territory occupancy and reproductive success of Golden Eagles (Aquila chrysaetos) in Denali National Park (Alaska, U.S.A.). The management decision was to restrict human access (hikers) to particular nesting territories to reduce disturbance. The management objective was to minimize restrictions on hikers while maintaining reproductive performance of eagles above some specified level. We based our decision analysis on predictive models of site occupancy of eagles developed using a combination of expert opinion and data collected from 93 eagle territories over 20 years. The best predictive model showed that restricting human access to eagle territories had little effect on occupancy dynamics. However, when considering important sources of uncertainty in the models, including environmental stochasticity, imperfect detection of hares on which eagles prey, and model uncertainty, restricting access of territories to hikers improved eagle reproduction substantially. An adaptive management framework such as ours may help reduce uncertainty of the effects of hiking activities on Golden Eagles. 相似文献
985.
陈雪峰 《中国人口.资源与环境》2011,(Z1)
在综述煤层气对于煤矿安全生产以及环境危害的基础上,从保护环境、缓解能源紧张、延长煤层气的产业链、减少瓦斯危害等多个角度综合分析了煤层气开发所带来的巨大效益,并以黔西北煤矿为例,叙述了煤层气的资源量现状及其地质特征等基本情况。简述了目前我国煤层气的开发现状,并提出了四条增产措施,这些措施必将对推动贵州省经济与环境的可持续发展,加快贵州省工业强省步伐起到积极作用。 相似文献
986.
987.
J. V. REDFERN M. F. MCKENNA T. J. MOORE J. CALAMBOKIDIS M. L. DEANGELIS E. A. BECKER J. BARLOW K. A. FORNEY P. C. FIEDLER S. J. CHIVERS 《Conservation biology》2013,27(2):292-302
Marine spatial planning provides a comprehensive framework for managing multiple uses of the marine environment and has the potential to minimize environmental impacts and reduce conflicts among users. Spatially explicit assessments of the risks to key marine species from human activities are a requirement of marine spatial planning. We assessed the risk of ships striking humpback (Megaptera novaeangliae), blue (Balaenoptera musculus), and fin (Balaenoptera physalus) whales in alternative shipping routes derived from patterns of shipping traffic off Southern California (U.S.A.). Specifically, we developed whale‐habitat models and assumed ship‐strike risk for the alternative shipping routes was proportional to the number of whales predicted by the models to occur within each route. This definition of risk assumes all ships travel within a single route. We also calculated risk assuming ships travel via multiple routes. We estimated the potential for conflict between shipping and other uses (military training and fishing) due to overlap with the routes. We also estimated the overlap between shipping routes and protected areas. The route with the lowest risk for humpback whales had the highest risk for fin whales and vice versa. Risk to both species may be ameliorated by creating a new route south of the northern Channel Islands and spreading traffic between this new route and the existing route in the Santa Barbara Channel. Creating a longer route may reduce the overlap between shipping and other uses by concentrating shipping traffic. Blue whales are distributed more evenly across our study area than humpback and fin whales; thus, risk could not be ameliorated by concentrating shipping traffic in any of the routes we considered. Reducing ship‐strike risk for blue whales may be necessary because our estimate of the potential number of strikes suggests that they are likely to exceed allowable levels of anthropogenic impacts established under U.S. laws. Evaluación del Riesgo de Colisiones de Barcos y Ballenas en la Planificación Marina Espacial 相似文献
988.
John Lie 《Sustainability Science》2007,2(2):233-236
The paper explores the potential political impact of global climate change and, more generally, of natural disaster. Because
the affluent West has largely tamed the natural and the social domains, popular clamor for government to anticipate, prevent,
and redress disaster increases. I delineate several consequences of the new politics of disaster. 相似文献
989.
乙醇对含水层中燃油芳香烃内在生物修复的潜在风险 总被引:1,自引:0,他引:1
内在生物修复,是在没有工程措施促进的情况下利用土著微生物降解含水层内灾害性物质的一种修复技术,在燃油烃污染管理方面具有显著的成本效益。该技术需要确定自然衰减过程,并能够继续提供有效的风险保护。针对燃油污染含水层,北美与欧洲认为内在生物修复是值得优先考虑的应用技术。然而,随着乙醇燃油的推广使用,我国在应用这样的经验时需要考虑乙醇的潜在影响。现有的文献研究表明乙醇存在能够阻止燃油主要污染物芳香烃(BTEX)的生物降解,降低水环境的pH值,并可能增强BTEX在水中的溶解性,或存在对生物的毒性,或因为乙醇降解降低介质的渗透性能。因此,需要更好地认识乙醇的潜在风险,为发展乙醇燃油污染含水层修复策略提供科学依据。 相似文献
990.