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   382篇
  免费   38篇
  国内免费   7篇
安全科学   13篇
废物处理   9篇
环保管理   85篇
综合类   126篇
基础理论   95篇
环境理论   3篇
污染及防治   14篇
评价与监测   8篇
社会与环境   71篇
灾害及防治   3篇
  2023年   10篇
  2022年   14篇
  2021年   15篇
  2020年   14篇
  2019年   9篇
  2018年   14篇
  2017年   13篇
  2016年   20篇
  2015年   13篇
  2014年   17篇
  2013年   30篇
  2012年   20篇
  2011年   29篇
  2010年   15篇
  2009年   21篇
  2008年   12篇
  2007年   12篇
  2006年   16篇
  2005年   20篇
  2004年   18篇
  2003年   22篇
  2002年   11篇
  2001年   15篇
  2000年   15篇
  1999年   6篇
  1998年   4篇
  1997年   6篇
  1996年   1篇
  1995年   5篇
  1994年   2篇
  1993年   3篇
  1991年   1篇
  1985年   3篇
  1982年   1篇
排序方式: 共有427条查询结果,搜索用时 62 毫秒
301.
This study uses an input–output model presenting the embodied carbon emission in the import–export procedure, as well as the responsibility allocation between China’s 35 sectors and 7 main trade partners from 1995 to 2011. Results indicate that the amount of carbon emissions in China’s industrial sectors is immense and that the industrial sectors are in serious imbalance. Such imbalance exists mainly in textiles, basic and fabricated metal, electrical and optical equipment, and machinery, among others. Based on the consumer-responsibility principle, the responsibility of 29 departments is reduced. Correspondingly, foreign sectors become more responsible. America, as China’s largest trading partner, should account for most of the total responsibility, followed by developed countries such as Japan, South Korea, and Germany.  相似文献   
302.
The European Union (EU) is an important destination for developing country exports. Has the EU’s commitment to the Kyoto Protocol induced developing countries to reduce their carbon dioxide (CO2) emissions? Our analyses of 136 developing countries from 1981 through 2007 suggests that: developing countries’ export dependence on the EU is associated with CO2 emission reductions post-Kyoto in relation to the pre-Kyoto time period; this also holds for SO2, which, while not covered under Kyoto, is linked with CO2 emission levels; this does not hold for PM10, a pollutant which is not covered under Kyoto and is not directly associated with CO2 emissions related to industrial activities; developing countries’ export dependence on non-EU developed countries and on the rest of the world is not associated with significant reductions in emissions between pre- and post-Kyoto for these pollutants . In sum, even in the absence of binding regulatory mandates, the EU appears to exert market leverage to project its regulatory preferences abroad.  相似文献   
303.
Seizures of hundreds of jaguar heads and canines in Central and South America from 2014 to 2018 resulted in worldwide media coverage suggesting that wildlife traffickers are trading jaguar body parts as substitutes for tiger parts to satisfy the demand for traditional Asian medicine. We compiled a data set of >1000 seized wild cats (jaguar [Panthera onca], puma [Puma concolor], and ocelot [Leopardus pardalis]) from 19 Central and South American countries and China. We ran generalized additive mixed models to detect trends in wild-cat seizures from 2012 to 2018 and assess the effects of socioeconomic factors of source countries and between those countries and China on the number of wild cats seized. Jaguar seizures increased over time, and most of the seized jaguar pieces were canines (1991 of 2117). Around 34% (32 of 93) of the jaguar-part seizure reports were linked with China, and these seizures contained 14-fold more individuals than those intended for domestic markets. Source countries with relatively high levels of corruption and Chinese private investment and low income per capita had 10–50 times more jaguar seizures than the remaining sampled countries. The number of Chinese residents in Central and South America was not significantly related to the number of jaguars seized. No socioeconomic factors influenced the seizures of puma and ocelots. Legal market chains may provide structure for the illegal chain; thus, the influx of illegal jaguar products is potentially a side effect of the economic partnership between Central and South American countries and China. Poverty and high levels of corruption in the source countries may motivate local people to engage in illegal activities and contribute to the growth of this trade. Supply-side interventions to curb this threat to Neotropical wild cats may include improved training for officials and promotion of governance and the value of protecting these animals to local people.  相似文献   
304.
研究了中国钢铁产品出口隐含的环境影响,核算了钢铁产品出口隐含的工业SO2、CO2、废水排放量和能源消耗量,并分析了产生环境影响的主要贡献因素.分析表明,钢铁产品出口隐含的环境影响巨大,且呈增长趋势,其中出口规模是环境影响大的主要原因,技术清洁程度对降低环境影响有积极作用但尚未充分发挥,出口产品结构调整对降低环境影响不显著,出口产品结构调整对出口单位价值量隐含的环境影响显著.在此基础上,对既有的相关政策进行评述,并建议提高钢铁行业排放和能源消耗标准以促进钢铁行业的绿色贸易和发展.  相似文献   
305.
在世界经济一体化进程中,国际贸易成为影响各国环境污染变化的重要因素,将其纳入经济增长与环境污染间关系的分析框架是环境学界关注的一个重要问题。本文基于联立方程模型,从经济产出、污染排放、污染治理和国际贸易等四个方面探讨了经济增长与污染排放的相互作用机理,并以美国、中国SO2排放为例进行了实证研究。结果表明:污染排放对经济产出有影响,且对美国和中国分别为正作用和负作用。经济增长增加了两国国内污染排放,且中国增加的相对更多。而污染治理均减少了国内污染排放,美、中的污染减排弹性系数分别为-0.277和-0.417。国际贸易对美国起到污染减排作用,对中国的影响不显著,考虑到贸易对中国经济增长的拉动作用,其经济规模间接污染效应不容忽视。对于中国而言,加大污染治理投资、改善贸易进出口状况、降低经济发展过程中的污染排放是实现经济与环境协调发展的有效途径。  相似文献   
306.
基于LMDI方法的中国国际贸易隐含碳分解   总被引:4,自引:0,他引:4  
对国际贸易产生环境影响的定量研究正日益受到关注,特别是对隐含碳的研究.以中国2005年为例,对中国国际贸易隐含碳进行估算,应用对数平均D氏指数法(LMDI)对影响隐含碳净转移的因素进行分解分析.结果显示中国因生产排放碳量远大于其消费需要排放的碳量,从国外净转移到中国的隐含碳为395.66MtC;净转移隐含碳影响因素中强度效应(进出口商品完全碳排放系数差异)贡献率为60%,规模效应(进出额差异)贡献率为55%,结构效应(进出口结构差异)贡献率为-14%,此结果表明中国相比国外的高碳排放强度是造成目前碳转移额外增加的主要因素,分析结构效应发现中国主要净出口行业大部分不是高碳排放强度行业,而净进口行业却主要由高碳排放强度行业构成,特别是与碳排放密切相关的能源行业居净进口行业首位.  相似文献   
307.
In recent years, China’s energy demand and Greenhouse gas (GHG) emissions have grown very fast, quite an amount of which was exported as energy embodied in goods in international trade rather than consumed domestically. Starting from the concept of embodied energy, based on input-output energy analysis approach, in this paper the energy embodied in goods in international trade of China during the period from 2001 to 2006 is calculated. The results show that although China has become a net importer of petroleum since 1993, China is a net exporter of embodied energy due to international trade in goods. In 2002, the total amount of energy embodied in exported goods was about 410 million tce (ton of coal equivalent, hereinafter referred to as "tce"). Eliminating the amount of energy embodied in imported goods of about 170 million tce, the net export of embodied energy was about 240 million tce, accounting for 16% of the aggregate primary energy consumption of that very year in China, and the net export of embodied emissions was about 150 million tons of carbon. With the rapid growth of China’s international trade, assuming no structural input-output changes of among sectors, in 2006 the net export of embodied energy went up to about 630 million tce, an increase of 162 % over 2002. In addition, this paper also analyzes the possible sources of error in calculation, and also discusses the policy implications according to the result of the calculation.  相似文献   
308.
中国工业产品国际贸易的污染足迹分析   总被引:14,自引:0,他引:14       下载免费PDF全文
从“污染足迹”的概念出发,利用官方统计数据和投入产出分析方法,分析了中国各工业部门的污染状况,核算了1994~2001年间中国工业产品国际贸易的污染成本和收益.结果表明,中国工业产品出口的污染密度要小于进口的污染密度;1999~2001年中国虽然存在工业产品贸易顺差,实际上却向国外转移了污染足迹;化学工业的净进口帮助中国转移了最多的污染足迹,污染足迹的流入主要来自纺织业和机械工业的净出口.  相似文献   
309.
This article provides a short overview of the main themes of ecological economics (EE). It is argued that EE provides a platform that fosters multidisciplinary environmental research by bringing together the core contributing disciplines – economics and ecology. In addition, EE is regarded as a pluralistic approach to environmental research that can be set opposite to, and has indeed developed as a response to, traditional environmental and resource economics. A comparison of the two fields is presented to clarify the essential differences between them. In addition, specific themes are examined in more detail. These include: sustainable development; the growth debate; international trade; dynamic processes; and behaviour and policy. Electronic Publication  相似文献   
310.
从国际"环保热"和我国"复关"谈判的实际出发,分析了我国环境贸易现状,阐述了我国环境贸易对外开放对策,文章还指出,为了促进我国环境服务业和环保工业跨出国门、参与国际竞争,并使我国的经济贸易向有利于生态环境的方向发展,必须把环保基本国策落实到经济贸易各个环节;组建环保产业集团公司;发挥中介机构的指导和协调作用;积极有效地引进外资;建立全国环保产业质量检测和评估中心;加强经济贸易中环境管理及环保执法。  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