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991.
矿井水污染控制及资源化 总被引:12,自引:0,他引:12
本文分析了我国煤矿矿井水净化与资源化现状,指出了矿井水资源化的途径和技术,并对提高矿区生活用水质量的措施进行了探讨。 相似文献
992.
中国东南沿海地区耕地资源保护与可持续利用 总被引:7,自引:2,他引:7
我国东南沿海地区具有优越的地理区位和气候条件,加上地区开发历史悠久,已成为中国经济最发达的地区之一。然而,近十多年来,由于经济以超常规速度发展,第二,三产业的发展速度,第二,三产业的发展速度大幅度加快,人多地少的矛盾日益突出,导致耕地面积不断萎缩,耕地质量不断下降。利用率和产出率显著滑坡,滥占耕地,占而不用及闲置浪费的现象相当普遍。以浙江省乐清市为例,近年来耕地以平均每年1.2%的速率在减少,目前 相似文献
993.
辽宁省可持续发展能力及调控对策研究 总被引:5,自引:0,他引:5
本文从可持续发展能力的内涵出发,分析了建国以来辽宁省可持续发展能力建设的成就与问题,认为辽宁省具有实施可持续发展的社会经济优势,但经济的快速发展是以资源的过度消耗和生态环境的破坏为代价的。并且城市产业结构偏重,区域经济发展很不平衡,城乡二元结构矛盾突出。接着构建了经济、社会和资源环境3大类41项指标,通过层次分析法对辽宁14个地级市可持续发展能力作了区域差异分析,结果表明沈阳、大连属于强可持续发展地区,盘锦、鞍山、本溪和丹东属于较强可持续发展地区,抚顺、锦州、营口、葫芦岛、辽阳属于一般可持续发展地区,铁岭、朝阳、阜新属于弱可持续发展地区。最后提出相应的对策:建立资源节约型的国民经济体系,优化产业结构,调整经济空间布局和保护生态环境。 相似文献
994.
本文认为可持续发展基本上是一种发展理念、一种哲学思想 ,而不是一种统一的、具体的发展模式 ,在分析了可持续发展的本质和实效以后 ,指出 :对中国来说 ,可持续发展意味着把政府提出的各项政策、战略贯彻好 ,把这种思想贯彻到方方面面的工作中去 相似文献
995.
Evaluation of oasis ecosystem risk by reliability theory in an arid area: A case study in the Shiyang River Basin, China 总被引:2,自引:0,他引:2
Ecosystem risk is a new concept in understanding environmental problems. It is important to study and develop quantitative methods for regional ecosystem risk analysis. In this study, some new indicators and methods for measuring oasis ecosystem risk were established using reliability theory. These indicators are linked to water resource, which is the key restricting factor in arid area oasis ecosystems. They have clear meanings and can also be compared in different arid area oases. A case study in the Liangzhou oasis of the Shiyang River Basin in China shows how to calculate these ecosystem risk indicators. The results of the case study are as follows: the reliability indicator, risk indicator, stability indicator, and integrated loss indicator of the Liangzhou oasis are 0.686, 0.314, 0.743, and 0.301, respectively. This means that the reliability degree of the oasis's ecosystem safety is 68.6%; the degree of risk that it is unsafe is 31.4%; the stability degree is 74.3%; and 30.1% of the oasis's area is supported by over-exploiting underground water and damaging the lower reaches of the ecosystem. This result can be used as a guide in controlling and managing ecosystem risk in the research area. 相似文献
996.
Duan Biggs Rosie Cooney Dilys Roe Holly T. Dublin James R. Allan Dan W.S. Challender Diane Skinner 《Conservation biology》2017,31(1):5-12
The escalating illegal wildlife trade (IWT) is one of the most high‐profile conservation challenges today. The crisis has attracted over US$350 million in donor and government funding in recent years, primarily directed at increased enforcement. There is growing recognition among practitioners and policy makers of the need to engage rural communities that neighbor or live with wildlife as key partners in tackling IWT. However, a framework to guide such community engagement is lacking. We developed a theory of change (ToC) to guide policy makers, donors, and practitioners in partnering with communities to combat IWT. We identified 4 pathways for community‐level actions: strengthen disincentives for illegal behavior, increase incentives for wildlife stewardship, decrease costs of living with wildlife, and support livelihoods that are not related to wildlife. To succeed the pathways, all require strengthening of enabling conditions, including capacity building, and of governance. Our ToC serves to guide actions to tackle IWT and to inform the evaluation of policies. Moreover, it can be used to foster dialogue among IWT stakeholders, from local communities to governments and international donors, to develop a more effective, holistic, and sustainable community‐based response to the IWT crisis. 相似文献
997.
Ylva Uggla 《Journal of Environmental Planning and Management》2010,53(1):91-105
Biological diversity is an abstract, scientific concept and both evaluating its condition and, to great extent, justifying its conservation requires expert knowledge. Accordingly, regulating and managing biological diversity presupposes standardisation and methods for managing uncertainty. To be acted on, the concept must be promoted, passing, in this process, through various institutions, such as intergovernmental organisations and national administrations. This paper examines how the principle of biological diversity conservation is defined, focusing on the values of biological diversity and how this notion has ‘travelled the world’. The paper includes a study of how the principle of biological diversity was applied in a specific case of insect control in Sweden. 相似文献
998.
Yu Fan Jiayang Ji Changgeng Jia Ming Lei Wenjun Wu Yun Zheng Zichao Wang Guohui Zhang Youtao Song 《Natural resources forum》2024,48(1):257-273
Achieving sustainable development is an issue of global concern. Accounting for the gross ecosystem product (GEP) value can specifically quantify the value of ecosystems for people, which is conducive to the formulation of sustainable management decisions. We have improved the GEP framework accounting method for the first time and evaluated the ecosystem service value of 36 cities in three provinces in the northeast (TPN) of China from 2000 to 2019, which provides decision-making references for the sustainable development of TPN. The main accounting results and policy recommendations are as follows: (1) The ecological value of Northeast China is in an upward stage—GEP has increased from 3.1 trillion yuan in 2000 to 4.5 trillion yuan in 2019, with climate regulation and water conservation functions being the main driving factors for GEP. (2) Based on the dual analysis of GEP and gross domestic product (GDP), there is still high room for improvement in most cities in the TPN region. While ensuring the protection of ecosystem services, cities can convert ecological value into economic value through carbon trading, water rights trading, ecological compensation, and other methods based on ecological characteristics, which is conducive to the sustainable development of GDP and GEP in the TPN region in the future. (3) The cold and hot spot analysis of GEP also provides decision-making basis for the planning of future ecosystem service protection areas in the TPN region. 相似文献
999.
消除灰霾的重要途径之一是实施固定污染源的大气污染物可持续的深度控制。通过总结我国目前各行业污染控制现状及进一步减排潜力,提出我国进行污染物深度控制的重点为工业锅炉和工业窑炉。进一步分析了我国目前大气污染控制技术存在问题及各行业污染深度控制需求。由于我国目前应用的污染控制技术基本都存在投资运行成本高、副产物不可资源化等问题,在工业锅炉、工业窑炉上很难实现可持续的污染物深度控制。因此,我国污染物可持续深度控制技术的研究方向应着重于以废治废、烟气量减排的循环经济型技术和多污染物协同控制及副产物商品化技术的研发和推广应用。 相似文献
1000.
本文较全面深刻地论述了21世纪人口与资源环境可持续发展中,人类生存与发展面临着严峻的挑战。为国际社会及全人类重新审视发展的历程,提出严峻的课题。 相似文献