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   445篇
  免费   21篇
  国内免费   19篇
安全科学   14篇
废物处理   10篇
环保管理   91篇
综合类   153篇
基础理论   120篇
环境理论   1篇
污染及防治   14篇
评价与监测   10篇
社会与环境   65篇
灾害及防治   7篇
  2023年   5篇
  2022年   6篇
  2021年   15篇
  2020年   11篇
  2019年   9篇
  2018年   8篇
  2017年   16篇
  2016年   11篇
  2015年   6篇
  2014年   14篇
  2013年   32篇
  2012年   22篇
  2011年   26篇
  2010年   27篇
  2009年   24篇
  2008年   18篇
  2007年   35篇
  2006年   22篇
  2005年   22篇
  2004年   29篇
  2003年   21篇
  2002年   14篇
  2001年   11篇
  2000年   20篇
  1999年   9篇
  1998年   9篇
  1997年   10篇
  1996年   6篇
  1995年   6篇
  1994年   8篇
  1993年   5篇
  1992年   2篇
  1991年   1篇
  1990年   2篇
  1989年   2篇
  1984年   1篇
排序方式: 共有485条查询结果,搜索用时 15 毫秒
111.
长江经济带国家级自然保护区管理状况评价   总被引:1,自引:0,他引:1       下载免费PDF全文
为切实做好长江经济带生态环境保护工作,基于HJ 913-2017《自然保护区管理评估规范》对长江经济带120处国家级自然保护区的管理状况进行评分.以评估结果为基础,评价了自然保护区管理状况的影响因素,并提出了提升自然保护区管理质量的建议.结果表明:①长江经济带国家级自然保护区的管理状况总体较好,平均得分为81.41分.从分布地区来看,经济较发达的地区,国家级自然保护区的管理状况相对较好;从建立时间看,评估总得分与国家级自然保护区的建立时长呈正相关;从规模看,评估总得分与国家级自然保护区的面积大小呈负相关;从自然保护区类型看,野生植物类型保护区的管理状况要优于野生动物类型.②从管理基础、管理措施、管理保障、管理成效、负面影响5项评估内容来看,管理基础得分相对较高,管理保障得分相对较低.③从全部指标的评分情况来看,保护对象变化和资源调查2项指标的得分相对较高;开发建设活动影响、专业技术能力、机构设置与人员配置、动态监测4项指标的得分相对较低.④Spearman相关分析表明,与评估总得分显著相关的指标为巡护执法、日常管护、专业技术能力、管护设施.研究显示,当前国家级自然保护区的机构设置、专业人才队伍建设、监测体系和开发建设活动影响是制约其管理质量提升的主要因素.   相似文献   
112.
建设生态文明是中华民族永续发展的千年大计。为维护全球生态安全,建设美丽中国,为人民创造良好生产生活环境,达到坚持人与自然和谐共生的目标,就必须正确认识自然规律、尊重地球、敬畏地球、规范人类行为;必须树立和践行绿水青山就是金山银山的理念,坚持节约资源和保护环境的基本国策,像对待生命一样对待生态环境;必须坚持节约优先、保护优先、自然恢复为主的方针,形成节约资源和保护环境的空间格局、产业结构、生产方式和生活方式,还自然以宁静、和谐与美丽。  相似文献   
113.
Cinema offers a substantial opportunity to share messages with a wide audience. However, there is little research or evidence about the potential benefits and risks of cinema for conservation. Given their global reach, cinematic representations could be important in raising awareness of conservation issues and species of concern, as well as encouraging greater audience engagement due to their heightened emotional impact on viewers. Yet there are also risks associated with increased exposure, including heightened visitor pressure to environmentally sensitive areas or changes to consumer demand for endangered species. Conservationists can better understand and engage with the film industry by studying the impact of movies on audience awareness and behavior, identifying measurable impacts on conservation outcomes, and engaging directly with the movie industry, for example, in an advisory capacity. This improved understanding and engagement can harness the industry's potential to enhance the positive impacts of movies featuring species, sites, and issues of conservation concern and to mitigate any negative effects. A robust evidence base for evaluating and planning these engagements, and for informing related policy and management decisions, needs to be built.  相似文献   
114.
摘要:当代社会,生态问题已成为全球性的问题。但早在马克思生存的时代就已经初露端倪,马克思对此进行了详细的阐述并且提出了解决途径。  相似文献   
115.
Local Biodiversity Action Plans are the preferred policy mechanism for setting and delivering local biodiversity targets in the UK. This paper reviews the kind of knowledge conservation scientists envisage being used to identify and set local targets, and explores the means of incorporating local knowledge into this process. We use a case study of a Wildlife Enhancement Scheme (WES) on the Pevensey Levels, East Sussex, to reveal the understandings that local farmers and residents have of the nature conservation goals and practices associated with the scheme. Drawing on the findings of in-depth discussion groups, we show how farmers challenge both the monopoly of knowledge conservationists profess about nature, and the enlistment of farmers on the scheme as «technicians», motivated solely by financial rewards, rather than as knowledgeable experts who also have emotional attachments and ethical values for nature. Local people use their knowledge of both local farmers, and the industry in general, to challenge the assumption that farmers can be trusted with delivering nature conservation goals. In the absence of a commitment by central government to agree widely-held environmental standards, and a more democratic process of making judgements about what local nature is worth conserving, local residents challenge existing processes designed to conserve nature that are driven by the knowledge and practices of official experts alone. The findings of the study suggest that a widening of the knowledge base on which the goals and practices of nature conservation are founded, and a more deliberative process of making decisions about what nature is important locally, will secure and strengthen public support for local biodiversity action plans.1998 Academic Press  相似文献   
116.
以辽宁海棠山和白石砬子国家级自然保护区为例,基于当地社区视角,借助田野调查、半结构式访谈法收集和掌握两个自然保护区生态旅游发展的实际情况.在综合比较两个保护区所在地区旅游业发展状况的基础上分析了二者生态旅游发展的差异和所凸显的问题,并就两个自然保护区在开展生态旅游过程中面临的主要问题提出了针对性的建议意见.通过对比发现问题和认识不足,只有在相互吸取教训和彼此经验互补的基础上才能促进两个保护区生态旅游的健康可持续发展.  相似文献   
117.
利用警戒距离和惊飞距离两个指标来反映黑颈鹤对旅游干扰的耐受性。实验表明人数的不同对黑颈鹤的惊飞距离有所不同。研究还表明游客的干扰类型以喧哗为主,占总数的73.10%。噪音分贝对黑颈鹤的警戒距离有极显著影响(p=0.0000.05)。为了在提高游客旅游体验的同时,消除旅游活动对黑颈鹤的不利影响,建议最小接近区域面积=π×39.112=4802.92m2,该区域范围内限制游客进入,并在外围设立障碍物。  相似文献   
118.
工业革命后,特别是二战后的新技术革命,西方国家的社会生产力得到了迅速提高,但在一定程度上是以生态环境被破坏为代价的。20世纪60年代后,自然意识的兴起使西方国家变革了社会发展观,自然意识已成为西方国家处理人地关系的基本准则。这个过程本身对我们国家目前的发展是很有借鉴意义的。本文介绍了自然意识的缘起。比较了自然意识与人本环境论的主要特征;通过对其主要特征的分析,探索生态旅游规划的指导思想,结合中国古代“天人合一”思想提出了自然意识对生态旅游规划的五点指导原则;并结合安徽板桥自然保护区的生态旅游规划介绍五点原则在实际中的具体应用。  相似文献   
119.
Future sustainability of the conservation management of socio-ecological landscapes is typically reliant on on-going agricultural management. Such management may be threatened by changes in the drivers of management and the fragility of the stakeholder networks that deliver management. This study examined evidence for the risk of abandonment in a series of case study high nature value (HNV) grassland sites. The work found that the motivation of farmers to participate in the conservation management was typically limited and often marginal. Landowners and conservation stakeholders who relied on partner farmers to manage such sites often struggled to recruit and retain their participation, leading to increased turnover among managing farmers and to some sites being under-managed. Primary reasons for difficulty of recruitment and farmer turnover included a lack of candidate farmers in the local landscape, and the marginal and fluctuating economics of grassland management. A trend towards greater financial incentivisation of farmers was evident, which policy-makers responsible for agri-environment schemes should note, and elsewhere some conservation organisations were seen to be bringing grassland management in-house. Farmers’ motivations to participate in conservation management of such systems may continue to weaken and abandonment may therefore become a significant risk to the successful conservation of such systems. Conservation stakeholders need to foster good relations with their farmer-manager partners and not further depress their limited motivations to participate, as well as consider carefully whether farmer stakeholders are being adequately compensated for their efforts.  相似文献   
120.
ABSTRACT

Quests for devolving more power to local actors for nature protection stem from both international and national policies. Also, there is a growing recognition of the need for local governments to promote green infrastructure for citizens to recreate and learn about their environment. Starting in 2004, the Swedish government has allocated special funding towards these goals through the Local Nature Conservation Programme (LONA). Virtually all Swedish municipalities have received such funding in pursuit of facilitating wide access to nature and promoting recreational activities, including the protection of nature areas, creating pathways, information devices, and promoting these areas among new societal groups to enjoy. This study presents the results of ten years of experience with LONA. A survey with respondents from 191 municipalities and 20 county administrations, together with 20 key informant interviews, show that the programme has been a success in several respects. Not only have most municipalities created a wealth of new ways to engage local organisations and citizens in nature conservation and recreation, but they have also broadened the ways they think about how nature is important to their constituencies. Due to innovative ways to count voluntary work as local matching of funding, smaller and less resourceful municipalities have also become engaged. Still, the local needs for further initiatives are deemed considerable. State support coupled with knowledge sharing is important to show policy priority to such bottom-up initiatives.  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