全文获取类型
收费全文 | 2380篇 |
免费 | 289篇 |
国内免费 | 339篇 |
专业分类
安全科学 | 338篇 |
废物处理 | 48篇 |
环保管理 | 486篇 |
综合类 | 1175篇 |
基础理论 | 304篇 |
环境理论 | 1篇 |
污染及防治 | 137篇 |
评价与监测 | 62篇 |
社会与环境 | 225篇 |
灾害及防治 | 232篇 |
出版年
2024年 | 26篇 |
2023年 | 60篇 |
2022年 | 84篇 |
2021年 | 84篇 |
2020年 | 79篇 |
2019年 | 79篇 |
2018年 | 81篇 |
2017年 | 97篇 |
2016年 | 104篇 |
2015年 | 93篇 |
2014年 | 119篇 |
2013年 | 180篇 |
2012年 | 193篇 |
2011年 | 209篇 |
2010年 | 142篇 |
2009年 | 113篇 |
2008年 | 89篇 |
2007年 | 159篇 |
2006年 | 140篇 |
2005年 | 138篇 |
2004年 | 100篇 |
2003年 | 79篇 |
2002年 | 78篇 |
2001年 | 56篇 |
2000年 | 60篇 |
1999年 | 79篇 |
1998年 | 22篇 |
1997年 | 32篇 |
1996年 | 30篇 |
1995年 | 25篇 |
1994年 | 24篇 |
1993年 | 31篇 |
1992年 | 23篇 |
1991年 | 19篇 |
1990年 | 17篇 |
1989年 | 9篇 |
1988年 | 7篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 3篇 |
1983年 | 2篇 |
1982年 | 5篇 |
1981年 | 3篇 |
1980年 | 3篇 |
1979年 | 2篇 |
1978年 | 6篇 |
1977年 | 4篇 |
1976年 | 3篇 |
1974年 | 2篇 |
1972年 | 2篇 |
排序方式: 共有3008条查询结果,搜索用时 15 毫秒
831.
康东伟 《中国环境管理干部学院学报》2006,16(4):43-45
昌黎黄金海岸自然保护区存在着土地权属、资源保护与开发矛盾、经费不足和管理执法力量薄弱等诸多现实问题.因此,结合保护区概况,提出发展生态旅游,解决土地权属、协调资源保护与开发关系和实施社区共管等方式等可行性对策与措施. 相似文献
832.
自然灾害保险风险分析 总被引:7,自引:1,他引:7
在考虑自然灾害的危险性、灾害的经济与社会易损性和风险区的工程防御能力的基础上,建立了自然灾害保险风险分析的数学模型。选择给人类社会造成重大损失的地震、地质灾害、洪水和台风等4种自然灾害作为灾害危险度评判的灾种,利用所建立的数学模型,对中国由然灾害保险风险进行了评判。并根据评判结果绘制了中国自然灾害保险风险区划图。 相似文献
833.
Bjørn K. Myskja 《Journal of Agricultural and Environmental Ethics》2006,19(3):225-238
Public policy on the development and use of genetically modified organisms (GMOs) has mainly been concerned with defining proper strategies of risk management. However, surveys and focus group interviews show that although lay people are concerned with risks, they also emphasize that genetic modification is ethically questionable in itself. Many people feel that this technology “tampers with nature” in an unacceptable manner. This is often identified as an objection to the crossing of species borders in producing transgenic organisms. Most scientists reject these opinions as based on insufficient knowledge about biotechnology, the concept of species, and nature in general. Some recent projects of genetic modification aim to accommodate the above mentioned concerns by altering the expression of endogenous genes rather than introducing genes from other species. There can be good scientific reasons for this approach, in addition to strategic reasons related to greater public acceptability. But are there also moral reasons for choosing intragenic rather than transgenic modification? I suggest three interrelated moral reasons for giving priority to intragenic modification. First, we should respect the opinions of lay people even when their view is contrary to scientific consensus; they express an alternative world-view, not scientific ignorance. Second, staying within species borders by strengthening endogenous traits reduces the risks and scientific uncertainty. Third, we should show respect for nature as a complex system of laws and interconnections that we cannot fully control. The main moral reason for intragenic modification, in our view, is the need to respect the “otherness” of nature. 相似文献
834.
唐家龙 《中国人口.资源与环境》2006,16(2):19-22
从分析可持续发展的内在要求与经济人假设之间的冲突出发,构建了利他状态下的资源代际分配效用函数。通过对非凸状偏好及利他的心理价格变化下消费均衡解的比较静态分析,作者指出。在后代人缺位情况下可以利用宏观和微观因素对当代人的利他度加以影响。实现利他的资源代际分配模式,从而在理论意义和实践意义上拓展了可持续发展理论。 相似文献
835.
在西部大开发中 ,能源占有举足轻重的作用。我国西部的塔里木、准噶尔、吐 -哈、柴达木、鄂尔多斯、四川等六大含油气盆地含有丰富的天然气资源 ,储量大于 5 0 0× 10 8m3的 9个大气田中 ,西部就占 7个。中国天然气预测资源总量为 38× 10 12 m3,其中西部天然气预测资源量为 2 2 .4× 10 12 m3,占天然气预测资源总量的 5 8.9%。仅就西部的塔里木盆地而言 ,剩余可采储量为 3397× 10 8m3,按年产 12 0× 10 8m3计算 ,储采比为 2 8,塔里木盆地天然气有动态稳产 30年的储量保证 ,这对于“西气东输”工程的实施、西部经济的腾飞和可持续发展具有重要意义 相似文献
836.
江苏省自然资源核算及对GDP的修正—以水、大气资源为例 总被引:9,自引:0,他引:9
传统国民经济核算体系对资源环境的忽视是造成当今资源环境问题的主要经济学原因,对江苏省自然资源(以水、大气资源为例)核算的结果表明,以GDP为主要衡量指标的传统国民经济核算体系过高地估计了江苏经济增长水平,江苏经济增长存在着较为严重的环境负债,以经资源环境调整的绿色GDP(或称EDP)取代传统GDP,构建可持续发展衡量指标与核算体系,应是目前可持续发展工作的关键。 相似文献
837.
Richard Worrell Michael C. Appleby 《Journal of Agricultural and Environmental Ethics》2000,12(3):263-277
Stewardship is potentially a usefulconcept in modernizing management philosophies. Use ofthe term has increased markedly in recent years, yetthe term is used loosely and rarely defined in landmanagement literature. The connections between thispractical usage and the ethical basis of stewardshipare currently poorly developed. The followingdefinition is proposed: ``Stewardship is theresponsible use (including conservation) of naturalresources in a way that takes full and balancedaccount of the interests of society, futuregenerations, and other species, as well as of privateneeds, and accepts significant answerability tosociety.' A religious interpretation would require thephrase ``and ultimately to God' to be added.Stewardship has both secular and religiousinterpretations and it will be desirable to developboth of these aspects in parallel. A task forphilosophers is to establish whether the ethical basisof stewardship is sufficient to address environmentalconcerns or whether it is necessary to embrace widerethical approaches. Stewardship occupies similarground to several other concepts of use and managementof resources, particularly sustainability. It canbuild on sustainability by encouraging a broader viewof who and what should benefit from managementactivity. In particular, it focuses attention on therole of managers in providing public benefit and onenvisaging other species as a form of ``stakeholder' inmanagement decisions. Stewardship is applicable acrossthe widest range of fields of resource use and alsohas relevance to aspects of land tenure and propertyrights. Application of stewardship will require someadjustments in the roles of private managers/ownersvis-à-vis government. It might providemanagers with an expanded role and, importantly, amore positive image, both of themselves and in theeyes of the public. Stewardship could alsobe developed in a way that has relevance to citizensin general (as opposed to managers and owners ofresources), through their interactions with naturalresources as consumers. 相似文献
838.
农业的持续发展依赖于农业自然资源的可持续利用。根据可持续发展思想,通过分析河南省农业自然资源的现状和资源利用中存在的主要问题,作者提出了实现该省农业自然资源可持续利用的途径。 相似文献
839.
Anna Peterson 《Journal of Agricultural and Environmental Ethics》2000,12(3):237-261
Mainstream currents within Christianity havelong insisted that humans, among all creatures, areneither fully identified with their physical bodiesnor fully at home on earth. This essay outlines theparticular characteristics of Christian notions ofhuman nature and the implications of this separationfor environmental ethics. It then examines recentefforts to correct some damaging aspects oftraditional Christian understandings of humanity'splace in nature, especially the notions of physicalembodiment and human embeddedment in earth. Theprimary goal of the essay is not to offer acomprehensive evaluation of Christian thinking aboutnature but rather to identify theological anthropologyas a crucial dimension of, and problem for, Christianenvironmental ethics. 相似文献
840.
S. V. Jagovkina I. L. Karol V. A. Zubov V. E. Lagun A. I. Reshetnikov E. V. Rozanov 《Atmospheric environment (Oxford, England : 1994)》2000,34(29-30)
A 3D mesoscale tropospheric photochemical transport model of high spatial resolution has been developed and used for assessment of the methane concentrations and methane emission in the West Siberian region of intensive mining of natural gas and oil deposits. The model is validated against the measurements of methane concentration at the surface and in the lower troposphere collected during July 1993 and June 1996 experiments. Comparison of the simulated and observed concentrations allowed to estimate that during the above periods the average natural methane fluxes were as high as 65 mg m−2 day−1. The anthropogenic methane fluxes (leakage from gas deposits) integrated over model domain during the same time period were about 20% of the total methane emission from relevant areas. 相似文献