全文获取类型
收费全文 | 1132篇 |
免费 | 28篇 |
国内免费 | 9篇 |
专业分类
安全科学 | 46篇 |
环保管理 | 565篇 |
综合类 | 287篇 |
基础理论 | 79篇 |
污染及防治 | 3篇 |
评价与监测 | 5篇 |
社会与环境 | 171篇 |
灾害及防治 | 13篇 |
出版年
2024年 | 1篇 |
2023年 | 5篇 |
2022年 | 30篇 |
2021年 | 56篇 |
2020年 | 30篇 |
2019年 | 22篇 |
2018年 | 18篇 |
2017年 | 22篇 |
2016年 | 34篇 |
2015年 | 20篇 |
2014年 | 44篇 |
2013年 | 59篇 |
2012年 | 106篇 |
2011年 | 96篇 |
2010年 | 69篇 |
2009年 | 54篇 |
2008年 | 49篇 |
2007年 | 111篇 |
2006年 | 68篇 |
2005年 | 51篇 |
2004年 | 60篇 |
2003年 | 57篇 |
2002年 | 22篇 |
2001年 | 10篇 |
2000年 | 26篇 |
1999年 | 20篇 |
1998年 | 8篇 |
1997年 | 4篇 |
1996年 | 6篇 |
1995年 | 2篇 |
1993年 | 3篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1971年 | 1篇 |
排序方式: 共有1169条查询结果,搜索用时 31 毫秒
151.
南岭山区传统聚落景观资源及其旅游开发研究 总被引:6,自引:0,他引:6
南岭山区的乡村传统聚落,经特定历史地理环境的演进和发展,以其特有的景观美学价值、鲜明的地域文化特色和科学实用价值的完美结合,而成为极为珍贵的历史文化遗产。由于古代南岭山区复杂地理环境的隔绝机制和移民们一直恪守着祖宗留下的遗风,其聚落景观至今得以大量保存而成为极富开发价值的
旅游资源。为促进南岭山区21世纪社会经济的快速发展,应将这一丰富的旅游资源的开发利用和保护列入议事日程。但必须深入调查研究,并坚持突出重点,择优开发;因地制宜,突出地域文化特色;旅游开发与乡村社会经济发展协调;保护与利用并重等开发原则。 相似文献
152.
153.
There is a pressing need for better explanations of diversity training effectiveness so that organizations can administer training programs that facilitate positive intergroup interactions. In this paper, we consider the unique predictive effect of organizational identification on diversity training outcomes beyond the effects of the traditional predictors of demographic-based identities and motivation to learn across two samples of employees involved in diversity-related training at their employing organizations. Organizational identification predicted unique variance in voluntary participation in diversity training, diversity training-related knowledge application, motivation to transfer diversity training, and diversity training-related organizational citizenship behavior intentions. Research and practitioner implications are discussed based on our findings. 相似文献
154.
This special issue of the Journal of Organizational Behavior was developed to further extend attribution theory and its application to the field of organizational behavior. In this introduction, we provide a brief overview of the motivation for this special issue, a concise summary of the papers included in it, a discussion about progress toward the field's goals, and suggestions for how future research can move the field forward. In doing so, we describe how applying attribution theory to studies that utilize a broad range of study designs, research contexts, and focal topics results in insights that enhance our understanding of how attributional processes predict and explain individuals' emotions and behaviors. We also provide suggestions for how to further develop attribution theory so we can more clearly describe the generalizability of relationships across a wide variety of organizational contexts. 相似文献
155.
陈国生 《湖南环境生物职业技术学院学报》2003,9(2):152-156
本文分析了衡阳市岳云塘地区旅游经济一体化发展的基础及制约因素,探讨了一体化发展的思路、原则和内容,提出了加快旅游经济一体化进程的具体对策. 相似文献
156.
南岳衡山旅游业持续发展初探 总被引:1,自引:0,他引:1
吴桂生 《湖南环境生物职业技术学院学报》2003,9(2):161-164
通过分析南岳衡山旅游业发展的历史背景、现状、旅游优势、存在的问题,着重探讨南岳衡山旅游业持续发展及其对策. 相似文献
157.
西北地区草地旅游点的生态功能与建设方向——从青海高原都兰古王国墓葬群及其周围的原生态绿色魅力谈起 总被引:1,自引:0,他引:1
孙鸿良 《生态与农村环境学报》2007,23(1):73-74,80
对青海省都兰县吐谷浑古王国墓葬群山谷地及其周围3 600 km2范围内生态环境进行考察后认为,完善的草地旅游应具有生态心理抚育、生态文化鉴赏、自然原生态的生理享有以及草地生态农业成就观光4个方面的生态功能.据此,提出了草地生态旅游的建设方向与建议. 相似文献
158.
The paper provides a review of available information on the impact of recreation and tourism on environments, particularly on vegetation and soil, in Australia, with an emphasis on forests. Efforts have been made to compare the current research and development situation in Australia with some overseas countries such as the United States and the United Kingdom. While many documents reveal that Australia has been experiencing an increasingly high level of recreation and tourism use in its environments, only limited studies of environmental impacts of recreation and tourism have been published. Compared with other developed countries, particularly the United Kingdom and the United States, Australia lags behind in undertaking research in this area. The results of these limited studies and some observations indicate that the most common recreational and tourist activities (such as bush walking, camping, horse-riding) can, if not well managed, adversely affect the values of Australian natural and semi-natural resources. Overall, they can affect the vegetation and other recreational sites physically and biologically. Physical effects include track formation, soil loss and/or compaction and an increase in fire frequency. Littering and water pollution are also seen as impacts associated with bush walking and camping. Biological effects include causing damage to vegetation, increasing risk of myrtle wilt disease and the spread of the soil pathogen,Phytophthora cinnamomi, as well as assisting weed dispersal. Based on the information reviewed, the authors suggest the following areas as priorities for future research into the environmental impact of recreation and tourism in Australia: determine the type of natural features that attract recreation use; determine the quantitative relationship between the impact and the level of recreation and tourism use for different activities within major vegetation habitats; ascertain site carrying capacity or environment thresholds for major vegetation habitats and recreation activities; and determine the impacts of recreation and tourism for major regions and major vegetation habitats where there have been considerable nature-based recreation and tourism activities.1998 Academic Press 相似文献
159.
160.
通过调查温州滨海地区近岸海上渔业、航运码头、滨海旅游及餐饮业等行业塑料垃圾的排放,分析行业区域塑料垃圾赋存特征,并初步估算各行业塑料垃圾排放量.结果表明:海上渔业活动区中,以避风塘渔港(S4)塑料垃圾占比最高(91.68%),且以聚乙烯、聚苯乙烯和聚丙烯塑料为主,而东沙渔港(S2)和霞关海水养殖区(S6)以聚苯乙烯泡沫为主,占比分别为26.75%和23.66%.海滩餐饮活动区的塑料垃圾最少,塑料垃圾占比为33.13%.各活动区塑料垃圾的主要类型有塑料袋、塑料瓶、塑料盒、塑料管及破碎的塑料块.据估算,海上渔业活动区与滨海旅游区年排放塑料垃圾量约为1.21×104t/a.为从根本上防治海洋塑料垃圾和海洋微塑料污染,需首先对沿海各行业的塑料垃圾排放源头加强管理,如海水养殖与海洋捕捞活动. 相似文献