全文获取类型
收费全文 | 11899篇 |
免费 | 430篇 |
国内免费 | 3115篇 |
专业分类
安全科学 | 655篇 |
废物处理 | 686篇 |
环保管理 | 974篇 |
综合类 | 5177篇 |
基础理论 | 2623篇 |
污染及防治 | 3835篇 |
评价与监测 | 575篇 |
社会与环境 | 564篇 |
灾害及防治 | 355篇 |
出版年
2024年 | 14篇 |
2023年 | 168篇 |
2022年 | 476篇 |
2021年 | 411篇 |
2020年 | 311篇 |
2019年 | 300篇 |
2018年 | 431篇 |
2017年 | 511篇 |
2016年 | 594篇 |
2015年 | 493篇 |
2014年 | 675篇 |
2013年 | 926篇 |
2012年 | 1167篇 |
2011年 | 979篇 |
2010年 | 635篇 |
2009年 | 562篇 |
2008年 | 696篇 |
2007年 | 566篇 |
2006年 | 565篇 |
2005年 | 747篇 |
2004年 | 805篇 |
2003年 | 729篇 |
2002年 | 346篇 |
2001年 | 272篇 |
2000年 | 293篇 |
1999年 | 316篇 |
1998年 | 233篇 |
1997年 | 231篇 |
1996年 | 196篇 |
1995年 | 163篇 |
1994年 | 121篇 |
1993年 | 120篇 |
1992年 | 110篇 |
1991年 | 88篇 |
1990年 | 38篇 |
1989年 | 38篇 |
1988年 | 25篇 |
1987年 | 16篇 |
1986年 | 14篇 |
1985年 | 10篇 |
1984年 | 6篇 |
1983年 | 4篇 |
1982年 | 9篇 |
1981年 | 6篇 |
1979年 | 2篇 |
1975年 | 2篇 |
1974年 | 4篇 |
1973年 | 4篇 |
1972年 | 4篇 |
1966年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
361.
362.
Alan?Rubelrstreiffer@wisc.edu" title="arubel@wisc.edu rstreiffer@wisc.edu" itemprop="email" data-track="click" data-track-action="Email author" data-track-label="">Email author Robert?Streiffer 《Journal of Agricultural and Environmental Ethics》2005,18(1):75-84
In her recent article, “Does autonomy count in favor of labeling genetically modified food?,” Kirsten Hansen argues that in Europe, voluntary negative labeling of non-GM foods respects consumer autonomy just as well as mandatory positive labeling of foods with GM content. She also argues that because negative labeling places labeling costs upon those consumers that want to know whether food is GM, negative labeling is better policy than positive labeling. In this paper, we argue that Hansen’s arguments are mistaken in several respects. Most importantly, she underestimates the demands of respecting autonomy and overestimates the cost of positive labeling. Moreover, she mistakenly implies that only a small minority of people desire information about GM content. We also explore the extent to which her arguments would apply to the US context, and argue that any discussion of the relationship between autonomy and labeling should include not just considerations of consumer autonomy but also considerations of what we call citizen autonomy. 相似文献
363.
Gaverick?Matheny Kai?M.?A.?ChanEmail author 《Journal of Agricultural and Environmental Ethics》2005,18(6):579-594
Few moral arguments have been made against vegetarian diets. One exception is the “Logic of the Larder:” We do animals a favor
by purchasing their meat, eggs, and milk, for if we did not purchase these products, fewer animals would exist. This argument
fails because many farm animals have lives that are probably not worth living, while others prevent a significant number of
wild animals from existing. Even if this were not so, the purchase of animal products uses resources that could otherwise
be used to bring a much greater number of animals into existence. 相似文献
364.
Can Muhlis Gozgor Giray 《Environmental science and pollution research international》2017,24(19):16364-16370
Environmental Science and Pollution Research - This paper reanalyzes the determinants of the CO2 emissions in France. For this purpose, it considers the unit root test with two structural breaks... 相似文献
365.
Liu Nan Li Ying-ying Ouyang Du-juan Guo Rui Chen Run Li Wei Li Ji-xiang Zhao Ji-hong 《Environmental science and pollution research international》2021,28(3):2860-2870
Environmental Science and Pollution Research - The regeneration of EDTA-FeII is a key step in electrobiofilm reduction-integrated systems for NOx removal from industrial boiler flue gas. The... 相似文献
366.
Chen Yujun Guan Bin Wu Xingze Guo Jiangfeng Ma Zeren Zhang Jinhe Jiang Xing Bao Shibo Cao Yiyan Yin Chengdong Ai Di Chen Yuxuan Lin He Huang Zhen 《Environmental science and pollution research international》2023,30(5):11246-11271
Environmental Science and Pollution Research - In recent years, with global climate change, the utilization of carbon dioxide as a resource has become an important goal of human society to achieve... 相似文献
367.
Pyrolysis has been examined as an attractive alternative to incineration for municipal solid waste (MSW) disposal that allows energy and resource recovery; however, it has seldom been applied independently with the output of pyrolysis products as end products. This review addresses the state-of-the-art of MSW pyrolysis in regards to its technologies and reactors, products and environmental impacts. In this review, first, the influence of important operating parameters such as final temperature, heating rate (HR) and residence time in the reaction zone on the pyrolysis behaviours and products is reviewed; then the pyrolysis technologies and reactors adopted in literatures and scale-up plants are evaluated. Third, the yields and main properties of the pyrolytic products from individual MSW components, refuse-derived fuel (RDF) made from MSW, and MSW are summarised. In the fourth section, in addition to emissions from pyrolysis processes, such as HCl, SO2 and NH3, contaminants in the products, including PCDD/F and heavy metals, are also reviewed, and available measures for improving the environmental impacts of pyrolysis are surveyed. It can be concluded that the single pyrolysis process is an effective waste-to-energy convertor but is not a guaranteed clean solution for MSW disposal. Based on this information, the prospects of applying pyrolysis technologies to dealing with MSW are evaluated and suggested. 相似文献
368.
The objective of this study was to predict the number of refrigerators containing CFC-11 blown isolation foam and the amount of CFC-11 banked in these refrigerators. By using a Weibull-based survival function, the number of CFC-11 containing and still-functioning refrigerators was estimated to be approximately 1.6 million in 2013 in Turkey. In order to determine the amount of CFC-11 in the isolation foam of these refrigerators, polyurethane (PU) foam samples were taken from a refrigerator manufactured in 1993 and the quantity of CFC-11 was analyzed by a GC-MS. It was determined that 113–195 mg CFC-11/g PU remains in the PU foam depending on the location such as door, sides, top and bottom. Knowing that a mid-sized refrigerator contains 4 kg PU on average, the total amount of PU foam to be disposed of is 6344 tons when the CFC-11 containing refrigerators in Turkey become obsolete in the near future. Furthermore, 717–1237 tons of CFC-11 are expected to be banked in the PU foam of these refrigerators which will exert an equivalent amount of ozone depleting potential (ODP). In addition, the global warming potential will vary between 3.4 and 5.9 million tons of CO2. 相似文献
369.
370.
Cheng Chen Rui-Chang Quan Guanghong Cao Hongpei Yang A. Cole Burton Michael Meitner Jedediah F. Brodie 《Conservation biology》2019,33(3):612-622
Management activities such as law enforcement and community outreach are thought to affect conservation outcomes in protected areas, but their importance relative to intrinsic environmental characteristics of the parks and extrinsic human pressures surrounding the parks have not been explored. Furthermore, it is not clear which is more related to conservation outcomes—the management itself or local people's perceptions of the management. We measured objective (reports by park staff) and subjective (reports by local people) levels of community outreach and law enforcement based on responses to 374 questionnaires. We estimated mammal abundance and diversity of 6 protected areas based on data from 115 camera traps in Xishuangbanna, southwest China, a biodiversity hotspot with high hunting and land-conversion pressures. We then examined correlations among them and found that local people's perception of law enforcement was positively related to the local abundance of 2 large, hunted species, wild boar (Sus scrofa) (β = 15.22) and muntjac (Muntiacus vaginalis) (β = 14.82), but not related to the abundance of smaller mammals or to objective levels of enforcement. The subjective frequency of outreach by park staff to local communities (β = 3.42) and park size (β = 3.28) were significantly and positively related to mammal species richness, whereas elevation, human population density, and subjective frequency of law enforcement were not. We could not conclude that community outreach and law enforcement were directly causing increased mammal abundance and diversity. Nevertheless, the patterns we detected are some of the first empirical evidence consistent with the idea that biodiversity in protected areas may be more positively and strongly related to local perceptions of the intensity of park management than to either intrinsic (e.g., elevation, park size) or extrinsic (e.g., human population density) environmental factors. 相似文献