全文获取类型
收费全文 | 2456篇 |
免费 | 166篇 |
国内免费 | 66篇 |
专业分类
安全科学 | 79篇 |
废物处理 | 64篇 |
环保管理 | 1056篇 |
综合类 | 617篇 |
基础理论 | 373篇 |
环境理论 | 48篇 |
污染及防治 | 81篇 |
评价与监测 | 43篇 |
社会与环境 | 255篇 |
灾害及防治 | 72篇 |
出版年
2024年 | 7篇 |
2023年 | 46篇 |
2022年 | 38篇 |
2021年 | 60篇 |
2020年 | 72篇 |
2019年 | 117篇 |
2018年 | 91篇 |
2017年 | 167篇 |
2016年 | 128篇 |
2015年 | 107篇 |
2014年 | 114篇 |
2013年 | 170篇 |
2012年 | 106篇 |
2011年 | 157篇 |
2010年 | 73篇 |
2009年 | 129篇 |
2008年 | 112篇 |
2007年 | 85篇 |
2006年 | 89篇 |
2005年 | 86篇 |
2004年 | 63篇 |
2003年 | 63篇 |
2002年 | 73篇 |
2001年 | 63篇 |
2000年 | 70篇 |
1999年 | 58篇 |
1998年 | 38篇 |
1997年 | 30篇 |
1996年 | 30篇 |
1995年 | 43篇 |
1994年 | 21篇 |
1993年 | 20篇 |
1992年 | 15篇 |
1991年 | 12篇 |
1990年 | 14篇 |
1989年 | 10篇 |
1988年 | 10篇 |
1987年 | 8篇 |
1986年 | 10篇 |
1985年 | 18篇 |
1984年 | 10篇 |
1983年 | 10篇 |
1982年 | 8篇 |
1981年 | 8篇 |
1980年 | 4篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1972年 | 2篇 |
1971年 | 3篇 |
排序方式: 共有2688条查询结果,搜索用时 15 毫秒
161.
中日韩循环经济政策比较研究 总被引:6,自引:0,他引:6
在中国经济迅猛发展的同时,投资主导型的经济模式中环境保护要素的缺失导致我国工业化发展旱、中期的资源、能源约束、效率低下和浪费严重。在我国实施循环经济刻不容缓。循环经济政策是依据不同的社会、经济和环境条件而制定的。由于历史的原因,中日韩三国在地缘关系、政治传统、风俗习惯、文化教育等内在制度和外在制度彼此趋同,反映在循环经济政策的制定、执行上也有某些相似的地方。对三国循环经济的历史和现状进行比较研究,得出有益于我国的经验,无疑具有很重大的现实意义。采用制度变迁的基本理论作为指导,运用历史研究法、调查研究法等方法进行研究,对中日韩循环经济政策演变的历程进行系统梳理和比较,深入全面地考量其指导思想和举措的选择动机,系统广泛地从多方面研究中日韩循环经济政策。并将三者加以比较,以得出对我国循环经济的发展具有较强借鉴意义的经验,更好地推进循环经济在我国的发展。 相似文献
162.
日本国土开发利用及对我国的启示 总被引:1,自引:0,他引:1
日本在战后经历了经济高速增长,工业化和城市化快速推进的发展历程,其间土地利用在结构、规模、价格、集约利用等方面发生了巨大变动。本文全面分析了二战之后,日本在经济高速增长、产业结构巨大变动、城市化迅速推进的发展过程中.农业用地、工业用地和城市用地在结构、规模、价格、集约利用程度等方面的特征;日本政府针对经济发展和土地利用的变动和影响。制订的一系列规划调整措施和政策法规体系。通过以上分析,探讨日本在有限的土地资源条件下实现经济高速增长的原因、途径和措施,以及对我国的启示。 相似文献
163.
黄河上游玛曲生态系统服务价值的估算和生态环境管理的政策设计 总被引:6,自引:0,他引:6
黄河上游玛曲草地生态系统的保护对整个黄河流域的生态安全意义重大。本文参考Costanza等人提出的方法和谢高地等人的研究成果估算了玛曲的生态系统服务价值,结果为96.25亿元/年,远高于经济产品1.93亿元/年的现价。基于草地资源可持续利用和牧民生活水平不断改善的要求,提出了以改变超载过牧为目标、以生态补偿为核心内容的草地生态系统管理的政策设计,生态补偿的标准应不少于0.93亿元/年。生态环境管理的政策内容主要包括:产业开发和产业转型、生态移民和牧民定居、草场管理、技术推广以及控制人口过快增长和促进社会进步等。 相似文献
164.
地方政府推进循环经济发展的局限性及对策研究——以山东省日照市为例 总被引:1,自引:0,他引:1
李兆前 《中国人口.资源与环境》2006,16(6):182-187
在分析日照市发展循环经济的路径、措施和难题的基础上,研究了地方政府的自利性、选择性偏差、调控手段和行政分割等方面的局限性,提出了规范中央政府和地方政府关系、构建科学的政绩考核体系、加强区域分类指导、加快立法与强化执法、制定相应的经济制度与政策等发展循环经济的建议。 相似文献
165.
Water Resource Management in Botswana: Balancing Sustainability and Economic Development* 总被引:1,自引:0,他引:1
Dianne Rahm Larry Swatuk Erica Matheny 《Environment, Development and Sustainability》2006,8(1):157-183
Botswana is a rapidly developing country in southern Africa. Over the last three decades, diamond mining and tourism have
provided double-digit rates of economic growth. Yet most of Botswana’s land is in the Kalahari desert where the climate is
subject to sustained periods of severe drought. In this environment, water resources are the most crucial of all environmental
resources. Water use directly affects economic development because water utilization impacts all the major national economic
sectors. A sustainable water use resource management plan must stretch several decades into the future to assure the availability
of adequate supplies of water to future generations while not compromising the ability of the current generation to reasonable
rates of economic development. Yet thinking about sustainability is present in Botswana water policy mostly only in rhetoric.
A series of cultural traditions and political constraints, coupled with bureaucratic managerial weaknesses, serve to maintain
a system of water allocation that is unsustainable in the long run and inefficient in the short-term. Unless sustainable water
use patterns are adopted, the results for the short-term, as well as the long-term, will be devastating. Drawing on data obtained
through a series of interviews with government officials, leaders of non-governmental organizations (NGOs), and water resource
researchers, this paper explores water policy in Botswana within the larger context of sustainable natural resource management
practice and the pressures of economic development.
This research was partially funded under U.S. Department of State, College and University Affiliations Grant # ASCS-1095. 相似文献
166.
Weisheng Zhou 《Sustainability Science》2006,1(1):115-122
It has been clearly recognized that future global climate change will limit the possibilities for sustainable development in China. To minimize these negative effects, as a practical strategy, we suggest that the Chinese government engage in international cooperation as a key contributor in the prevention of global warming. This suggestion results from numerical estimations of China’s greenhouse gas (GHG) emission trends accompanied with economic growth up to 2100. The results show that China’s gross domestic product (GDP), measured in terms of purchasing power parity (PPP), may overtake the sum of the GDPs of the United States and Canada in 2020. It is predicted that GDP per capita may reach US$20,000 and $80,000 in 2050 and 2100, respectively; meanwhile, CO2 emissions in China will increase from 6.6 billion tons (in carbon equivalent units) in 1990 to 54.6 billion tons in 2100. This means that the global peak concentration of GHG cannot be practically reduced without significant contributions from China. For international cooperation in mitigating global climate change, we introduce a new option, “per-capita emission restricted by assigned amount,” as an accounting rule for GHG reduction. This baseline classifies global CO2 reduction actions into three categories: compulsory reduction, self-imposed reduction, and voluntary reduction. We suggest that China contribute to world CO2 reduction according to the following timetable: voluntary reduction until 2012, self-imposed reduction until 2020, and compulsory reduction from 2020. The simulation results also indicate that China can benefit from this strategy in terms of improvements in its domestic economy and environment, for instance, by reducing fossil fuel consumption and the emission of pollutants.
相似文献
Weisheng ZhouEmail: Phone: +81-75-4663418Fax: +81-75-4663418 |
167.
Jung Wk Kim 《Sustainability Science》2006,1(1):107-114
The East Asian economy has been growing fast in recent years, and environmental stresses are building up rapidly. Transboundary air pollution, water shortages, drinking water contamination, freshwater and marine pollution, deforestation, climatic disasters, and other environmental problems are becoming serious threats to the well-being of people in this densely populated region. The ESI (environmental sustainability index) reported by the World Economic Forum in 2005 is a good indicator of the environmental status of the region; most East Asian countries ranked at the bottom. East Asia is not moving toward a sustainable society, and the environment will not sustain the current rate of economic development for long. The traditional culture of East Asia used to be sustainable, so we can learn much from our traditions. Land use should be planned from an ecological point of view so as to best preserve the land’s productivity and stability. There should be definite goals as to where and how much to preserve the three important ecological bases: forests, coastal wetlands and agricultural farms. The forest is the base for the terrestrial ecosystem, including flood control, water resources, and climate; the coastal wetland is the base for the marine ecosystem; farmland is the base for producing food. Within these defined goals, limits should be set on how much land can be utilized for activities like urban development, manufacturing, and recreation. Limits on the pollution load resulting from such activities should be set so as not to irreversibly damage the environment. Economic development should be planned to allow the use of energy and resources only after satisfying these constraints.
相似文献
Jung Wk KimEmail: Phone: +82-2-8805653Fax: +82-2-8876905 |
168.
REED F. NOSS ERICA FLEISHMAN† DOMINICK A. DELLASALA‡ JOHN M. FITZGERALD§ MART R. GROSS MARTIN B. MAIN†† FIONA NAGLE‡‡ STACEY L. O'MALLEY JON ROSALES§§ 《Conservation biology》2009,23(4):825-833
Abstract: The Society for Conservation Biology (SCB) can enhance conservation of biodiversity in North America by increasing its engagement in public policy. Toward this end, the North America Section of SCB is establishing partnerships with other professional organizations in order to speak more powerfully to decision makers and taking other actions—such as increasing interaction with chapters—geared to engage members more substantively in science-policy issues. Additionally, the section is developing a North American Biodiversity Blueprint, which spans the continental United States and Canada and is informed by natural and social science. This blueprint is intended to clarify the policy challenges for protecting continental biodiversity, to foster bilateral collaboration to resolve common problems, and to suggest rational alternative policies and practices that are more likely than current practices to sustain North America's natural heritage. Conservation scientists and practitioners can play a key role by drawing policy makers' attention to ultimate, as well as proximate, causes of biodiversity decline and to the ecological and economic consequences of not addressing these threats. 相似文献
169.
R. W. ABRAMS ENO D. ANWANA† ALISON ORMSBY‡ DELALI B. K. DOVIE§ ADEMOLA AJAGBE AMBER ABRAMS†† 《Conservation biology》2009,23(4):799-804
Abstract: Developed nations intervened in conservation policy across Africa during the 20th century to address needs to protect species and biodiversity that were based on their own perceptions and priorities. In the 21st century, conservationists in Africa have revised these perceptions and begun the process of identifying conservation priorities from an African perspective and in consideration of Africans' priorities. Although foreign conservation interveners struggled to identify mechanisms to which local people would respond, African conservationists are now demonstrating how to integrate the continent's unique socioeconomic circumstances into efforts to protect biodiversity. In Africa effective conservation policy must include the generation of wealth, reduction of disease and hunger, and support of traditional land-use practices. 相似文献
170.
Chen Xuebin 《中国人口.资源与环境(英文版)》2011,(2):90-96
During the 11th Five Year Plan period,China improved its policy system for the overall strategy of regional development,and established and completed the policies intended for the promotion of regional cooperation and interaction.Thereupon,regional development in China took on a series of positive changes such as the enhancement of coordination.During the 12th Five Year Plan period,China will fully implement and continuously improve the policy measures for development in its four major regions,strengthen differentiated guidance to different regions in line with the planning for major function-oriented zones,and accelerate the establishment of basic systems that facilitate coordinated regional development. 相似文献