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   854篇
  免费   12篇
  国内免费   48篇
安全科学   60篇
废物处理   12篇
环保管理   219篇
综合类   214篇
基础理论   74篇
环境理论   1篇
污染及防治   108篇
评价与监测   24篇
社会与环境   62篇
灾害及防治   140篇
  2023年   10篇
  2022年   9篇
  2021年   13篇
  2020年   25篇
  2019年   11篇
  2018年   14篇
  2017年   22篇
  2016年   17篇
  2015年   20篇
  2014年   15篇
  2013年   44篇
  2012年   22篇
  2011年   59篇
  2010年   31篇
  2009年   45篇
  2008年   54篇
  2007年   38篇
  2006年   36篇
  2005年   27篇
  2004年   25篇
  2003年   44篇
  2002年   26篇
  2001年   25篇
  2000年   22篇
  1999年   22篇
  1998年   21篇
  1997年   27篇
  1996年   38篇
  1995年   32篇
  1994年   16篇
  1993年   22篇
  1992年   18篇
  1991年   10篇
  1990年   9篇
  1989年   1篇
  1988年   4篇
  1987年   5篇
  1986年   6篇
  1985年   7篇
  1984年   3篇
  1983年   4篇
  1982年   7篇
  1981年   1篇
  1980年   1篇
  1979年   2篇
  1978年   1篇
  1974年   1篇
  1969年   2篇
排序方式: 共有914条查询结果,搜索用时 31 毫秒
81.
Integrated resource management (IRM) is currently implemented in many parts of the world. This article promotes a pragmatic interpretation and suggests that idealistic beliefs in the problem-solving capacities of IRM are not justified. Successful implementation and performance of IRM are primarily a function of the historical context into which a project is placed. A comparative analysis of several case studies in Western Canada provides evidence for this argument, and the results can be summarized in a conceptual model about integration in resource management. IRM is interpreted as a process of constructing an objective reality of integration for sectorial management decisions, and this construction involves the transformations of power structures. This article suggests several pragmatic conclusions for IRM practice.  相似文献   
82.
灾度指数及其意义   总被引:6,自引:5,他引:6  
孙卫东  彭子成 《灾害学》1995,10(2):16-20
本文分析了现行支度判别方法的不足,指出评价灾度时必须充分考虑承灾体对灾害的反应情况,并且根据判别准则的可比性原则,提出了灾度指数的概念,并以此做为灾度评价因子,旨在促进灾度评估工作的定量化、科学化,为防灾减灾服务。  相似文献   
83.
西南地区1959—1961年三年自然灾害分析   总被引:1,自引:1,他引:1  
文传甲 《灾害学》1995,10(4):43-48
该文以丰富而翔实的资料就西南地区1959~1961年三年自然灾害,特别是旱灾的灾情、灾情特点、灾害损失、灾害原因及其经验教训进行了论述.  相似文献   
84.
高建国 《灾害学》1995,10(4):69-73
本文通过大量查阅灾害史料,对解放前灾民的食物进行了归类总结,其中有:植物类、动物类、土石类及其它,从一个方面反映了社会的落后与不平等.  相似文献   
85.
Modeling the spatial dynamics of regional land use: the CLUE-S model   总被引:95,自引:3,他引:92  
Land-use change models are important tools for integrated environmental management. Through scenario analysis they can help to identify near-future critical locations in the face of environmental change. A dynamic, spatially explicit, land-use change model is presented for the regional scale: CLUE-S. The model is specifically developed for the analysis of land use in small regions (e.g., a watershed or province) at a fine spatial resolution. The model structure is based on systems theory to allow the integrated analysis of land-use change in relation to socio-economic and biophysical driving factors. The model explicitly addresses the hierarchical organization of land use systems, spatial connectivity between locations and stability. Stability is incorporated by a set of variables that define the relative elasticity of the actual land-use type to conversion. The user can specify these settings based on expert knowledge or survey data. Two applications of the model in the Philippines and Malaysia are used to illustrate the functioning of the model and its validation.  相似文献   
86.
This article presents lessons from experience pertinent to implementing small-scale natural resource and related investment projects in developing countries. It outlines ideas for intervention and innovation to foster such investments. Particular emphasis is placed on private-sector participation in these investments. Following a brief presentation of the economic development and other arguments that support intervention and innovation in support of such small-scale natural resource investments, the article discusses many of the lessons learned from experience. These lessons reinforce those touched upon in the investment-specific discussions in the previous articles. The experience and associated lessons that are examined include experiences in both developing and developed countries and encompass not just lessons from natural resource investments, but also small-scale investments in other sectors. Financing and other innovations which facilitate meeting the challenges are drawn from relevant experience where barriers to investment have been surmounted. Options for programme and project interventions to increase market penetration of small-scale investments and achieve the associated development linkages and synergies are suggested. These suggestions are aimed especially at governments and bilateral and multilateral development finance and development assistance entities. It is those players who might support such interventions in collaboration with local financial institutions and other market players.  相似文献   
87.
A method for evaluating areas for national park status   总被引:1,自引:0,他引:1  
A procedure for evaluating different areas as national parks based on a scoring system is proposed. A National Park Evaluation Form (NPEF) evaluating natural, cultural, and recreational resources in accordance with international criteria for national parks is presented. The evaluation points given to an area indicate the possibility of the area becoming a national park. In this method, subjectivity and bias have been minimized by a special application of the Delphi technique. The method outlined here could help in the efforts of selecting and establishing national parks in many countries.  相似文献   
88.
窑洞民居防灾   总被引:1,自引:0,他引:1  
王继唐 《灾害学》1993,8(1):86-90
黄河中上游广泛分布的窑洞民居常遭受种种灾害:有自然塌落、浸水损坏、滑坡崩塌和地震袭击。本文根据民间建窑经验、调查研究资料及试验结果,进行分析归纳,提出窑洞防灾措施:①选址;②合理选择窑洞跨度和断面形式,做好防水措施。并验算了民间一般明箍窑洞的抗震能力。  相似文献   
89.
海岸带环境资源综合管理,是对海岸带资源可持续开发利用模式下的现代综合管理。本文在对区域海岸带环境资源综合管理的内涵及管理目标进行分析的基础上,以秦皇岛海岸带环境资源实施综合管理为例,提出了区域海岸带环境资源综合管理的评价过程及模式。  相似文献   
90.
’98重庆市的自然灾害与减灾对策   总被引:3,自引:0,他引:3  
刁承泰  葛永军  陶陶  谭青 《灾害学》1999,14(3):42-45
1998 年夏季, 长江流域发生了特大自然灾害。地处长江上游之尾的重庆市,其灾情以山洪和滑坡、崩塌、泥石流等坡地灾害并发为主, 具有与长江中下游地区不同的特殊性。作者分析了重庆市灾情的严重性, 从自然环境和人类活动两方面分析了灾害成因的特殊性,在此基础上提出了坡地灾害的防治对策  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