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   98709篇
  免费   1234篇
  国内免费   1130篇
安全科学   3691篇
废物处理   3649篇
环保管理   15010篇
综合类   21510篇
基础理论   27646篇
环境理论   75篇
污染及防治   18770篇
评价与监测   5904篇
社会与环境   4168篇
灾害及防治   650篇
  2022年   762篇
  2021年   812篇
  2020年   665篇
  2019年   879篇
  2018年   1249篇
  2017年   1305篇
  2016年   2267篇
  2015年   1868篇
  2014年   2601篇
  2013年   9288篇
  2012年   2554篇
  2011年   3140篇
  2010年   3426篇
  2009年   3574篇
  2008年   2762篇
  2007年   2672篇
  2006年   2858篇
  2005年   2715篇
  2004年   2997篇
  2003年   2867篇
  2002年   2448篇
  2001年   2908篇
  2000年   2250篇
  1999年   1592篇
  1998年   1383篇
  1997年   1383篇
  1996年   1517篇
  1995年   1637篇
  1994年   1534篇
  1993年   1371篇
  1992年   1375篇
  1991年   1349篇
  1990年   1296篇
  1989年   1278篇
  1988年   1113篇
  1987年   1030篇
  1986年   1010篇
  1985年   1095篇
  1984年   1190篇
  1983年   1194篇
  1982年   1189篇
  1981年   1121篇
  1980年   958篇
  1979年   961篇
  1978年   844篇
  1977年   739篇
  1976年   675篇
  1974年   654篇
  1973年   688篇
  1972年   698篇
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
101.
Environmental Science and Pollution Research - Despite that commuters spend only 5.5% of their time in cabin vehicles, their exposure to harmful air pollutants, originated from the vehicle itself,...  相似文献   
102.
Russian Journal of Ecology - A new method for assessing the response of biota to climatic changes in the ecosystem has been tested. In the Central Forest Natural Biosphere Reserve, the average...  相似文献   
103.
Environment, Development and Sustainability - Sugarcane is an industrial crop globally used for producing biofuels and bioproducts and is the only source of white sugar in Bangladesh. However,...  相似文献   
104.
Russian Journal of Ecology - In this paper, Ellenberg’s indicator values were estimated in order to soil nitrogen (N), pH (R) and soil moisture (M) in different subalpine grassland...  相似文献   
105.
Environmental Economics and Policy Studies - Streets are an essential element of cities, and their design has a profound impact on their functionality to the movement of people and their...  相似文献   
106.
107.
Environmental Science and Pollution Research - Lake Mariut Main Basin (MB) is not only one of the three basins composing Lake Mariut (LM) but is also the main source of the popular tilapia fish to...  相似文献   
108.
Russian Journal of Ecology - In the southern tip of the Urals, late spring frosts, which regularly damage the leaves of the common oak (Quercus robur L.), are reflected in the formation of a...  相似文献   
109.
Eutrophication, harmful algal blooms, and human health impacts are critical environmental challenges resulting from excess nitrogen and phosphorus in surface waters. Yet we have limited information regarding how wetland characteristics mediate water quality across watershed scales. We developed a large, novel set of spatial variables characterizing hydrological flowpaths from wetlands to streams, that is, “wetland hydrological transport variables,” to explore how wetlands statistically explain the variability in total nitrogen (TN) and total phosphorus (TP) concentrations across the Upper Mississippi River Basin (UMRB) in the United States. We found that wetland flowpath variables improved landscape-to-aquatic nutrient multilinear regression models (from R2 = 0.89 to 0.91 for TN; R2 = 0.53 to 0.84 for TP) and provided insights into potential processes governing how wetlands influence watershed-scale TN and TP concentrations. Specifically, flowpath variables describing flow-attenuating environments, for example, subsurface transport compared to overland flowpaths, were related to lower TN and TP concentrations. Frequent hydrological connections from wetlands to streams were also linked to low TP concentrations, which likely suggests a nutrient source limitation in some areas of the UMRB. Consideration of wetland flowpaths could inform management and conservation activities designed to reduce nutrient export to downstream waters.  相似文献   
110.
Artisanal and small-scale gold mining (ASGM) is the principal anthropogenic activity that globally contributes to overloading our environment with mercury. Although the Minamata Convention, led by the United Nations, is a crucial instrument to eliminate its use progressively, novel approaches to accelerate this difficult transition are welcome. This article proposes a framework for policy-making or improvement, fostering the enforcement of mercury elimination through the lens of the 17 Sustainable Development Goals (SDGs), focusing on the excluded artisanal and small-scale gold miners and their dependents. We move forward with a literature review of the Artisanal and Small Mining topic, taking each SDG as a unit of analysis. Understanding the problem as a puzzle of four sets of pieces, namely: (1) social, (2) environmental, (3) economic, and (4) institutional, the paper offers potential opportunities for the decision-makers and practitioners to accelerate the substitution of this heavy metal and develop sustainable futures for the ASGM communities. We conclude by proposing a pragmatic framework that synthesizes the means, actions, and ends to accelerate a sustainable transition.  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