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   116篇
  免费   1篇
安全科学   4篇
废物处理   2篇
环保管理   23篇
综合类   23篇
基础理论   27篇
污染及防治   22篇
评价与监测   5篇
社会与环境   8篇
灾害及防治   3篇
  2022年   2篇
  2020年   3篇
  2019年   4篇
  2018年   8篇
  2017年   4篇
  2016年   7篇
  2015年   4篇
  2014年   3篇
  2013年   8篇
  2012年   2篇
  2011年   9篇
  2010年   1篇
  2009年   10篇
  2008年   3篇
  2007年   9篇
  2006年   6篇
  2005年   2篇
  2004年   2篇
  2003年   7篇
  2002年   2篇
  2001年   5篇
  2000年   1篇
  1998年   1篇
  1997年   3篇
  1995年   1篇
  1993年   4篇
  1992年   1篇
  1980年   1篇
  1970年   1篇
  1962年   3篇
排序方式: 共有117条查询结果,搜索用时 15 毫秒
81.
Adaptation to Climate Change in Developing Countries   总被引:2,自引:0,他引:2  
Adaptation to climate change is given increasing international attention as the confidence in climate change projections is getting higher. Developing countries have specific needs for adaptation due to high vulnerabilities, and they will in this way carry a great part of the global costs of climate change although the rising atmospheric greenhouse gas concentrations are mainly the responsibility of industrialized countries. This article provides a status of climate change adaptation in developing countries. An overview of observed and projected climate change is given, and recent literature on impacts, vulnerability, and adaptation are reviewed, including the emerging focus on mainstreaming of climate change and adaptation in development plans and programs. The article also serves as an introduction to the seven research articles of this special issue on climate change adaptation in developing countries. It is concluded that although many useful steps have been taken in the direction of ensuring adequate adaptation in developing countries, much work still remains to fully understand the drivers of past adaptation efforts, the need for future adaptation, and how to mainstream climate into general development policies.  相似文献   
82.
The paper introduces the so-called climate change mainstreaming approach, where vulnerability and adaptation measures are assessed in the context of general development policy objectives. The approach is based on the application of a limited set of indicators. These indicators are selected as representatives of focal development policy objectives, and a stepwise approach for addressing climate change impacts, development linkages, and the economic, social and environmental dimensions related to vulnerability and adaptation are introduced. Within this context it is illustrated using three case studies how development policy indicators in practice can be used to assess climate change impacts and adaptation measures based on three case studies, namely a road project in flood prone areas of Mozambique, rainwater harvesting in the agricultural sector in Tanzania and malaria protection in Tanzania. The conclusions of the paper confirm that climate risks can be reduced at relatively low costs, but the uncertainty is still remaining about some of the wider development impacts of implementing climate change adaptation measures.  相似文献   
83.
This paper seeks to contribute to an improved information management and exchange between humanitarian organisations and military agents in complex emergencies. To do so, a theoretical information management process model was developed and applied to the case of information management between International Security Assistance Force troops and humanitarian organisations such as Cordaid, DACAAR and the International Office for Migration in Kabul, Afghanistan. Based on this analysis the main shortcomings and problems in each stage of the information management process were identified. These include a lack of structured information databases, the absence of identification of information needs, and an over‐classification of documents by the military. Using a logical framework analysis, six major improvement tactics were developed, including the creation of more overlap in rotations of personnel, the specification of aims and tasks regarding information management, the improvement of skills and competences of personnel involved, and the introduction of regular joint civil–military evaluations.  相似文献   
84.
The North Water is a recurrent polynya in the High Arctic situated between Northwest Greenland and Ellesmere Island of Canada. The North Water makes a dynamic space, where various processes may enhance or obstruct each other, accelerating or halting particular modes of human–animal relations in the region, where life itself depends on the North Water. This will be discussed in four steps. The first step posits the North Water as a perceived oasis for explorers and whalers hailing from Europe or America in the nineteenth century. The second step concentrates on the diverse rhythms inherent in the ice conditions, as affected by trends that are set in motion elsewhere. The third step highlights the implications of the dynamics of the ice and sea currents for animal life in the region. The fourth step gives an overview of human settlement patterns around the North Water across the ages. The article shows how natural and social features are deeply implicated in each other, even if they are not directly co-variant.  相似文献   
85.
Despite repeated calls to action, proposals for urban conservation are often met with surprise or scepticism. There remains a pervasive narrative in policy, practice, and the public psyche that urban environments, although useful for engaging people with nature or providing ecosystem services, are of little conservation value. We argue that the tendency to overlook the conservation value of urban environments stems from misconceptions about the ability of native species to persist within cities and towns and that this, in turn, hinders effective conservation action. However, recent scientific evidence shows that these assumptions do not always hold. Although it is generally true that increasing the size, quality, and connectivity of habitat patches will improve the probability that a species can persist, the inverse is not that small, degraded, or fragmented habitats found in urban environments are worthless. In light of these findings we propose updated messages that guide and inspire researchers, practitioners, and decision makers to undertake conservation action in urban environments: consider small spaces, recognize unconventional habitats, test creative solutions, and use science to minimize the impacts of future urban development.  相似文献   
86.
87.
88.
89.
Although concern for biodiversity and its conservation originated in the biological sciences, with growing international interest an increasing number of interest groups are claiming standing in discussions of the best ways to conserve biodiversity. One of these groups, formed by various indigenous peoples and their advocates, has repeatedly defended its claim to standing by stating that indigenous peoples are well equipped to conserve biodiversity. These claims have had far-reaching consequences, as millions of hectares of Amazonian forest have been deeded to indigenous groups, at least partially on the reasoning that such actions would conserve biodiversity. In this paper, we bring to the attention of the community of conservation biologists a group representing 229 native Amazonian groups comprising 1.2 million people in Peru, Bolivia, Ecuador, Brazil, and Colombia. In a document entitled "To the Community of Concerned Environmentalists," this group of indigenous peoples proposes a broad template for cooperation between conservation biologists and the indigenous peoples of the Amazon Basin. Following reiteration of the statement, we discuss the fact that these two groups define biodiversity and its conservation in different ways, with indigenous peoples focusing more on preservation of general habitat characteristics and exclusion of extensive habitat alteration. We conclude that the interests of conservation biologists may not be completely compatible with the agenda of indigenous peoples and their advocates but that by cooperating valuable time is being bought by both sides.  相似文献   
90.
In the course of a 2-year predictive testing programme for Huntington's disease (HD), six couples from a total of 52 applicants requested prenatal testing. In each case, the pregnancy was in the first or second trimester when the couples were referred for DNA diagnosis. In five cases, exclusion testing was offered; in one case, a person at risk with an increased risk of being a gene carrier requested prenatal diagnosis. In all cases, informative markers for prenatal testing could be determined. Whenever possible, the newer technique of polymerase chain reaction (PCR) for D4S125 was applied to perform rapid prenatal diagnosis. Two couples withdrew before chorionic villus sampling was undertaken; prenatal diagnosis was completed in the remaining four cases. After exclusion testing, two pregnancies were determined to have an increased risk and two fetuses to have a low risk of being HD gene carriers.  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