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   7896篇
  免费   319篇
  国内免费   61篇
安全科学   304篇
废物处理   99篇
环保管理   2401篇
综合类   2284篇
基础理论   1191篇
环境理论   2篇
污染及防治   172篇
评价与监测   153篇
社会与环境   1488篇
灾害及防治   182篇
  2025年   22篇
  2024年   211篇
  2023年   205篇
  2022年   145篇
  2021年   211篇
  2020年   237篇
  2019年   187篇
  2018年   124篇
  2017年   214篇
  2016年   193篇
  2015年   153篇
  2014年   220篇
  2013年   455篇
  2012年   396篇
  2011年   457篇
  2010年   302篇
  2009年   309篇
  2008年   304篇
  2007年   430篇
  2006年   422篇
  2005年   349篇
  2004年   344篇
  2003年   320篇
  2002年   324篇
  2001年   269篇
  2000年   293篇
  1999年   240篇
  1998年   182篇
  1997年   145篇
  1996年   105篇
  1995年   100篇
  1994年   82篇
  1993年   77篇
  1992年   46篇
  1991年   21篇
  1990年   28篇
  1989年   9篇
  1988年   10篇
  1987年   13篇
  1986年   19篇
  1985年   9篇
  1984年   6篇
  1983年   5篇
  1982年   14篇
  1981年   7篇
  1980年   11篇
  1979年   12篇
  1978年   9篇
  1977年   5篇
  1971年   9篇
排序方式: 共有8276条查询结果,搜索用时 15 毫秒
351.
浙西南野生观赏蕨类植物资源及其开发利用   总被引:18,自引:2,他引:18  
浙西南丽水山地蕨类植物资源十分丰富,其中具有较高观赏价值的就有29科,56属,94种,它们可应用于园林绿化、盆景配置、切花配叶、盆栽观赏等方面。浙西南山地观赏蕨类植物资源的开发利用前景十分光明。  相似文献   
352.
刘少艾 《资源开发与市场》2007,23(10):916-917,948
从对“周庄现象”的思考提出了为实现旅游可持续发展而激励旅游地居民参与的两种因素——物质激励因素及非物质激励因素,分析了两种激励因素的运用与作用机理,认为激励手段的使用要根据旅游地的发展阶段有重点地确定,这样才能激发旅游地居民积极参与到旅游业的发展中去。  相似文献   
353.
根据“清洁生产”的产生及其重要性,论述了要保进环境和经济的协调发展,走可持续发展道路,就必须积极推行清洁生产。  相似文献   
354.
中国湿地现状综述   总被引:9,自引:0,他引:9  
湿地是重要的自然资源,对人类生存起着重要作用。本文综述了湿地的含义、功能与 价值、中国湿地的特点与现状,以促进中国湿地的可持续发展与利用。  相似文献   
355.
    
Sector sustainability strategies can provide frameworks to help business sectors identify and manage economic, environmental and social risks in an integrated way, and unlock opportunities to improve competitiveness and enhance reputation. They can also help trade associations to become more effective champions for their members; however, little research has been undertaken on their development. Current best practice guidance simply provides frameworks for managing the strategy development process. To add to this guidance, the context, purpose, process and content of three strategies from the UK construction products industry have been investigated. Strategy context and content were found to be unique; it is therefore not considered feasible to develop a generic sector sustainability strategy. However, six lessons have been identified with respect to strategy purpose and process, which may improve the chances of success of a sector sustainability strategy. Copyright © 2007 John Wiley & Sons, Ltd and ERP Environment.  相似文献   
356.
    
This paper examines the influence of the size of firms' board of directors on corporate social performance through a meta‐analytic perspective. To that end, a sample of 80 articles that draw on evidence from more than 80,000 international companies, published between 1997 and 2018, was examined. This paper analyzes the moderating effect of a set of corporate governance mechanisms such as board composition and corporate governance systems on the hypothesized relationship between the size of firms' board and corporate social performance. Our central results reveal that larger and more independent boards better represent stakeholders' sensitivities and allow companies to achieve their social objectives. Moreover, that connection is more positive and stronger in companies with more independent boards and in countries that have codified law, which often have fewer mechanisms to protect shareholders' interests.  相似文献   
357.
在分析区域开发中的环境规划所存在问题的基础上,阐述了区域环境规划的主要内容、规划目标和程序,提出了编制区域环境规划的建议.  相似文献   
358.
四川中药资源的开发利用与发展方向   总被引:2,自引:0,他引:2  
万兵 《四川环境》1995,14(3):21-25
本文探讨了四川中药资源的开发利用和发展方向;(1)以资源化优势为依托,大力发展创泡中草药;(2)以地道药材为优势,建立稳定的药材基地(3)以综合利用为途径,提高资源利用的数量和质量;(4)以资源保护为前景,保证资源的永续利用。本文  相似文献   
359.
    
This paper examines the relationship between tenure diversity, corporate innovation, and carbon emission performance in developing countries, with a particular focus on the interaction model of corporate innovation in the nexus. The study is conducted in a unique setting of Indonesian firms with a high level of tenure diversity and carbon performance, excluding the financial industry from 2015 to 2021 and covering 1466 firm-year observations. The study confirms that tenure diversity in the boardroom is a significant driver in reducing carbon emissions, as it has the potential to lower emissions during production cycles. However, the results suggest that there may be a poor decline in emissions when firms are too diverse. The authors' findings are robust and consistent over several robustness checks and endogeneity tests. This study is the first to focus on a quantitative measurement of carbon emission performance based on the Global Reporting Initiative in developing countries.  相似文献   
360.
This article summarizes some of the results from the application of the indicators for sustainable energy development (ISED) tool for analyzing Lithuania's energy sector, in terms of trends, setting energy policy goals and monitoring progress towards these goals. This experience illustrates the potential applicability of the ISED methodology for energy policy development in economies in transition, using Lithuania as an example. The article presents a summary of the results achieved and conclusions arrived at from the analysis of six priority areas in the context of the research project coordinated by the International Atomic Energy Agency, and provides recommendations for the development of sustainable energy policy using the ISED approach.  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