全文获取类型
收费全文 | 2078篇 |
免费 | 34篇 |
国内免费 | 15篇 |
专业分类
安全科学 | 69篇 |
废物处理 | 74篇 |
环保管理 | 378篇 |
综合类 | 336篇 |
基础理论 | 483篇 |
环境理论 | 4篇 |
污染及防治 | 529篇 |
评价与监测 | 151篇 |
社会与环境 | 91篇 |
灾害及防治 | 12篇 |
出版年
2023年 | 22篇 |
2022年 | 23篇 |
2021年 | 28篇 |
2020年 | 25篇 |
2019年 | 30篇 |
2018年 | 41篇 |
2017年 | 55篇 |
2016年 | 50篇 |
2015年 | 53篇 |
2014年 | 56篇 |
2013年 | 155篇 |
2012年 | 80篇 |
2011年 | 122篇 |
2010年 | 85篇 |
2009年 | 99篇 |
2008年 | 109篇 |
2007年 | 131篇 |
2006年 | 94篇 |
2005年 | 81篇 |
2004年 | 81篇 |
2003年 | 77篇 |
2002年 | 83篇 |
2001年 | 42篇 |
2000年 | 34篇 |
1999年 | 28篇 |
1998年 | 28篇 |
1997年 | 27篇 |
1996年 | 22篇 |
1995年 | 27篇 |
1994年 | 26篇 |
1993年 | 13篇 |
1992年 | 17篇 |
1991年 | 18篇 |
1990年 | 14篇 |
1989年 | 17篇 |
1988年 | 18篇 |
1987年 | 14篇 |
1986年 | 18篇 |
1985年 | 9篇 |
1984年 | 11篇 |
1983年 | 11篇 |
1982年 | 12篇 |
1981年 | 9篇 |
1980年 | 8篇 |
1979年 | 14篇 |
1978年 | 8篇 |
1977年 | 9篇 |
1975年 | 8篇 |
1974年 | 8篇 |
1954年 | 8篇 |
排序方式: 共有2127条查询结果,搜索用时 359 毫秒
41.
Allison C. Sylvetsky Viviana Bauman Jenny E. Blau H. Martin Garraffo Peter J. Walter 《毒物与环境化学》2017,99(3):535-542
We aimed to measure concentrations of the commonly used artificial sweetener sucralose, following ingestion of doses reflecting a range of consumption and to compare concentrations in children and adults. Eleven adults consumed 355 mL water containing 0 mg (control), 68, 170, or 250 mg sucralose (equivalent to 1–4 diet sodas). A second group of adults (n = 11) consumed 355 mL Diet Rite Cola? (68 mg sucralose and 41 mg acesulfame-potassium (ace-K)) or 68 mg sucralose and 41 mg ace-K in seltzer. Beverages were provided at separate visits in randomized order, prior to an oral glucose tolerance test. Eleven children consumed 0 or 68 mg sucralose in 240 mL water, in an identical study design. Blood was collected before beverage ingestion and serially for 120 min. Sucralose doses (corrected for weight) resulted in similar plasma concentrations in children and adults. Concentrations were comparable whether sucralose was administered in water, combined with ace-K, or in diet soda. Due to their lower body weight and blood volume, children have markedly higher plasma sucralose concentrations after the consumption of a typical diet soda, emphasizing the need to determine the clinical implications of sucralose use in children. 相似文献
42.
Morris Jennifer Hone David Haigh Martin Sokolov Andrei Paltsev Sergey 《Environmental Economics and Policy Studies》2023,25(1):31-61
Environmental Economics and Policy Studies - Growing societal pressures, technological trends and government and industry actions are moving the world toward decarbonization and away from the... 相似文献
43.
44.
Martin Drechsler Henrik G. Smith Astrid Sturm Frank Wätzold 《Conservation biology》2016,30(4):894-899
Payments to compensate landowners for carrying out costly land‐use measures that benefit endangered biodiversity have become an important policy instrument. When designing such payments, it is important to take into account that spatially connected habitats are more valuable for many species than isolated ones. One way to incentivize provision of connected habitats is to offer landowners an agglomeration bonus, that is, a bonus on top of payments they are receiving to conserve land if the land is spatially connected. Researchers have compared the cost‐effectiveness of the agglomeration bonus with 2 alternatives: an all‐or‐nothing, agglomeration payment, where landowners receive a payment only if the conserved land parcels have a certain level of spatial connectivity, and a spatially homogeneous payment, where landowners receive a payment for conserved land parcels irrespective of their location. Their results show the agglomeration bonus is rarely the most cost‐effective option, and when it is, it is only slightly better than one of the alternatives. This suggests that the agglomeration bonus should not be given priority as a policy design option. However, this finding is based on consideration of only 1 species. We examined whether the same applied to 2 species, one for which the homogeneous payment is best and the other for which the agglomeration payment is most cost‐effective. We modified a published conceptual model so that we were able to assess the cost‐effectiveness of payment schemes for 2 species and applied it to a grassland bird and a grassland butterfly in Germany that require the same habitat but have different spatial‐connectivity needs. When conserving both species, the agglomeration bonus was more cost‐effective than the agglomeration and the homogeneous payment; thus, we showed that as a policy the agglomeration bonus is a useful conservation‐payment option. 相似文献
45.
CSIRO Sustainable Ecosystems is constructing a spatially explicit modelling system capable of exploring alternative land and water policy alternatives against plausible price, cost, and climate scenarios for the next 20 years. INSIGHT will be used to identify the likely impacts of land and water policy options on regional economies and structural adjustment. Flowcharts have been constructed for most of the major crop and pasture and associated economic models for commodities produced in the Lachlan River Catchment of New South Wales. This enabled the most important components and interrelationships within these models to be readily identified. The next step has been to construct models at the regional scale that contain the essential elements of the more-detailed point models. The paper describes the progress to date in describing these models, and how they have been integrated into a coordinated agricultural crop production evaluation system. 相似文献
46.
Haus Martin Žatko Daniel Vašková Janka Vaško Ladislav 《Environmental science and pollution research international》2021,28(2):1612-1618
Environmental Science and Pollution Research - The most common mycotoxin found in European foodstuffs, especially unprocessed grains, is deoxynivalenol (DON), which inhibits proteosynthesis and... 相似文献
47.
Carl Folke Stephen Polasky Johan Rockstrm Victor Galaz Frances Westley Michle Lamont Marten Scheffer Henrik
sterblom Stephen R. Carpenter F. Stuart Chapin III Karen C. Seto Elke U. Weber Beatrice I. Crona Gretchen C. Daily Partha Dasgupta Owen Gaffney Line J. Gordon Holger Hoff Simon A. Levin Jane Lubchenco Will Steffen Brian H. Walker 《Ambio》2021,50(4):834
The COVID-19 pandemic has exposed an interconnected and tightly coupled globalized world in rapid change. This article sets the scientific stage for understanding and responding to such change for global sustainability and resilient societies. We provide a systemic overview of the current situation where people and nature are dynamically intertwined and embedded in the biosphere, placing shocks and extreme events as part of this dynamic; humanity has become the major force in shaping the future of the Earth system as a whole; and the scale and pace of the human dimension have caused climate change, rapid loss of biodiversity, growing inequalities, and loss of resilience to deal with uncertainty and surprise. Taken together, human actions are challenging the biosphere foundation for a prosperous development of civilizations. The Anthropocene reality—of rising system-wide turbulence—calls for transformative change towards sustainable futures. Emerging technologies, social innovations, broader shifts in cultural repertoires, as well as a diverse portfolio of active stewardship of human actions in support of a resilient biosphere are highlighted as essential parts of such transformations. 相似文献
48.
Hiller Edgar Pilková Zuzana Filová Lenka Jurkovič Ľubomír Mihaljevič Martin Lacina Petr 《Environmental science and pollution research international》2021,28(5):5455-5471
Environmental Science and Pollution Research - It is well known that road transport emits various trace elements into the environment, which are deposited in soils in the vicinity of roads,... 相似文献
49.
Pavlova Ekaterina Pashkunova-Martic Irena Schaier Martin Petrova Emilia Gluhcheva Yordanka Dorkov Peter Helbich Thomas H. Keppler Bernhard Koellensperger Gunda Ivanova Juliana 《Environmental science and pollution research international》2021,28(6):6784-6795
Environmental Science and Pollution Research - In this study, we compare the effects of deferiprone (Def) and tetraethylammonium salt of salinomycinic acid (Sal) on lead (Pb)-induced toxicity in... 相似文献
50.
Anders Malmendal Jesper Givskov Sørensen Johannes Overgaard Martin Holmstrup Niels Chr. Nielsen Volker Loeschcke 《Die Naturwissenschaften》2013,100(5):417-427
We investigated the global metabolite response to artificial selection for tolerance to stressful conditions such as cold, heat, starvation, and desiccation, and for longevity in Drosophila melanogaster. Our findings were compared to data from other levels of biological organization, including gene expression, physiological traits, and organismal stress tolerance phenotype. Overall, we found that selection for environmental stress tolerance changes the metabolomic 1H NMR fingerprint largely in a similar manner independent of the trait selected for, indicating that experimental evolution led to a general stress selection response at the metabolomic level. Integrative analyses across data sets showed little similarity when general correlations between selection effects at the level of the metabolome and gene expression were compared. This is likely due to the fact that the changes caused by these selection regimes were rather mild and/or that the dominating determinants for gene expression and metabolite levels were different. However, expression of a number of genes was correlated with the metabolite data. Many of the identified genes were general stress response genes that are down-regulated in response to selection for some of the stresses in this study. Overall, the results illustrate that selection markedly alters the metabolite profile and that the coupling between different levels of biological organization indeed is present though not very strong for stress selection at this level. The results highlight the extreme complexity of environmental stress adaptation and the difficulty of extrapolating and interpreting responses across levels of biological organization. 相似文献