首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   270篇
  免费   4篇
  国内免费   1篇
安全科学   14篇
废物处理   12篇
环保管理   55篇
综合类   33篇
基础理论   55篇
污染及防治   56篇
评价与监测   15篇
社会与环境   26篇
灾害及防治   9篇
  2023年   3篇
  2022年   3篇
  2021年   3篇
  2020年   2篇
  2019年   4篇
  2018年   4篇
  2017年   4篇
  2016年   13篇
  2015年   4篇
  2014年   8篇
  2013年   23篇
  2012年   16篇
  2011年   8篇
  2010年   12篇
  2009年   17篇
  2008年   20篇
  2007年   11篇
  2006年   9篇
  2005年   12篇
  2004年   11篇
  2003年   10篇
  2002年   2篇
  2001年   11篇
  2000年   8篇
  1999年   2篇
  1998年   3篇
  1997年   4篇
  1996年   2篇
  1995年   3篇
  1994年   3篇
  1993年   2篇
  1992年   4篇
  1991年   9篇
  1990年   2篇
  1989年   3篇
  1987年   2篇
  1985年   2篇
  1984年   1篇
  1982年   2篇
  1980年   3篇
  1979年   3篇
  1978年   1篇
  1977年   1篇
  1975年   2篇
  1972年   2篇
  1970年   1篇
排序方式: 共有275条查询结果,搜索用时 15 毫秒
271.
A protocol for risk assessment at inactive hazardous material disposal sites has been developed by using mathematical modeling and estimation techniques. Compared with ranking models, the protocol yields quantitative results with a minimum of input data that may be used to select among management, scientific, or engineering alternatives for the site. This article reviews the background, presents the protocol, illustrates the application of the protocol, and demonstrates the use of the protocol in conjunction with thecritical environmental area concept. Comparisons are also presented with other model systems such as the EPA HRS.  相似文献   
272.
Climate change combined with human activities poses significant risks to people’s livelihood especially in developing countries. Adaptation at the community level is of crucial importance in enabling them to respond to the direct and indirect effects of changes in climate. In a case study of fishing communities in Chilika lagoon, India, the focus is made on understanding climate change adaptation at the community level and scaling it up into the policy perspective through application of Sustainable Livelihood Approach. This article challenges the research and policy community to encourage the identification of locally negative constraints and positive strengths toward climate resilient communities in rural areas.
Rajib ShawEmail:
  相似文献   
273.
With the UN‐led celebration of the International Year of Youth from August 2010 to August 2011 there has been a renewed interest in young people and the vital role they can play in important issues, such as disaster risk reduction (DRR). This study aims to examine the potential of science clubs as a vehicle for youth participation in DRR in the Philippines. A questionnaire survey was conducted to obtain quantitative and qualitative data. A total of 658 science club members from different provinces of the Philippines participated in the survey. The result of the survey is used to explain how the major barriers to youth participation in DRR can be overcome. Through science clubs, the youth can become a link between their school, home and community and can contribute to spreading knowledge about disaster prevention, preparedness and response learned inside and outside the classroom.  相似文献   
274.
Pollinator declines have prompted efforts to assess how land-use change affects insect pollinators and pollination services in agricultural landscapes. Yet many tools to measure insect pollination services require substantial landscape-scale data and technical expertise. In expert workshops, 3 straightforward methods (desk-based method, field survey, and empirical manipulation with exclusion experiments) for rapid insect pollination assessment at site scale were developed to provide an adaptable framework that is accessible to nonspecialist with limited resources. These methods were designed for TESSA (Toolkit for Ecosystem Service Site-Based Assessment) and allow comparative assessment of pollination services at a site of conservation interest and in its most plausible alternative state (e.g., converted to agricultural land). We applied the methods at a nature reserve in the United Kingdom to estimate the value of insect pollination services provided by the reserve. The economic value of pollination services provided by the reserve ranged from US$6163 to US$11,546/year. The conversion of the reserve to arable land would provide no insect pollination services and a net annual benefit from insect-pollinated crop production of approximately $1542/year (US$24∙ha–1∙year–1). The methods had wide applicability and were readily adapted to different insect-pollinated crops: rape (Brassica napus) and beans (Vicia faba) crops. All methods were rapidly employed under a low budget. The relatively less robust methods that required fewer resources yielded higher estimates of annual insect pollination benefit.  相似文献   
275.
Environment, Development and Sustainability - Sustainability has emerged as a dominating paradigm across global institutions as a critical component for their prospects. Organisations all across...  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号