全文获取类型
收费全文 | 73篇 |
免费 | 0篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 1篇 |
环保管理 | 11篇 |
综合类 | 40篇 |
基础理论 | 7篇 |
污染及防治 | 7篇 |
评价与监测 | 2篇 |
社会与环境 | 3篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2020年 | 2篇 |
2019年 | 2篇 |
2018年 | 4篇 |
2017年 | 3篇 |
2016年 | 1篇 |
2015年 | 3篇 |
2014年 | 1篇 |
2013年 | 1篇 |
2012年 | 2篇 |
2011年 | 3篇 |
2010年 | 4篇 |
2009年 | 3篇 |
2008年 | 2篇 |
2007年 | 2篇 |
2005年 | 2篇 |
2003年 | 1篇 |
2001年 | 2篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1985年 | 2篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1973年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
1960年 | 1篇 |
1958年 | 1篇 |
1957年 | 1篇 |
1947年 | 4篇 |
1944年 | 1篇 |
1942年 | 1篇 |
1941年 | 1篇 |
1939年 | 1篇 |
1938年 | 1篇 |
1937年 | 1篇 |
1934年 | 1篇 |
1931年 | 1篇 |
1930年 | 1篇 |
1929年 | 2篇 |
1927年 | 2篇 |
1926年 | 1篇 |
1921年 | 1篇 |
1916年 | 1篇 |
排序方式: 共有73条查询结果,搜索用时 31 毫秒
1.
2.
Christian Mrz Felipe S. Freitas Johan C. Faust Jasmin A. Godbold Sian F. Henley Allyson C. Tessin Geoffrey D. Abbott Ruth Airs Sandra Arndt David K. A. Barnes Laura J. Grange Neil D. Gray Ian M. Head Katharine R. Hendry Robert G. Hilton Adam J. Reed Saskia Rühl Martin Solan Terri A. Souster Mark A. Stevenson Karen Tait James Ward Stephen Widdicombe 《Ambio》2022,51(2):370
Unprecedented and dramatic transformations are occurring in the Arctic in response to climate change, but academic, public, and political discourse has disproportionately focussed on the most visible and direct aspects of change, including sea ice melt, permafrost thaw, the fate of charismatic megafauna, and the expansion of fisheries. Such narratives disregard the importance of less visible and indirect processes and, in particular, miss the substantive contribution of the shelf seafloor in regulating nutrients and sequestering carbon. Here, we summarise the biogeochemical functioning of the Arctic shelf seafloor before considering how climate change and regional adjustments to human activities may alter its biogeochemical and ecological dynamics, including ecosystem function, carbon burial, or nutrient recycling. We highlight the importance of the Arctic benthic system in mitigating climatic and anthropogenic change and, with a focus on the Barents Sea, offer some observations and our perspectives on future management and policy. 相似文献
3.
Saskia Buchholz Jürgen Junk Andreas Krein Günther Heinemann Lucien Hoffmann 《Atmospheric environment (Oxford, England : 1994)》2010,44(39):5183-5190
An impact related daily air quality index (DAQx), calculated for 15 air quality monitoring stations (traffic, background, and industry) in Belgium, France, Germany and Luxembourg, was compared to mesoscale atmospheric patterns between 2001 and 2007. Meteorological conditions were described by the Hess and Brezowsky synoptic weather classification system and gridded data of the EU FP6 ENSEMBLES project of total precipitation and mean surface temperature. DAQx values indicate sufficient to poor air quality in the urban area of Brussels and at urban traffic stations, as well as satisfactory air quality at the background stations. The air quality index refers to more than 90% to the presence of high PM10, O3 and NO2 concentrations. SO2 and CO play only a minor role. The investigation of weather regimes indicates that zonal and mixed cyclonic circulation regimes are associated with better air quality than meridional and anticyclonic weather regimes. In general, weather regimes with high daily precipitation lead to better air quality than dryer air masses because of lower contribution of PM10 to the air quality index. A trend analysis of weather regimes from 1978 to 2007 shows significant (α = 0.05) positive trends for weather classes associated with lower PM10 concentrations. The results of a case study at a German station examining the relationship between PM10 concentrations and local meteorological quantities (wind speed and precipitation) confirm the results of the regional analysis. 相似文献
4.
Joke Muys Yves Jacquemyn Bettina Blaumeiser Laura Bourlard Nathalie Brison Saskia Bulk Patrizia Chiarappa Anne De Leener Marjan De Rademaeker Julie Désir Anne Destrée Koenraad Devriendt Annelies Dheedene Armelle Duquenne Annelies Fieuw Erik Fransen Jean-Stéphane Gatot Mauricette Jamar Sandra Janssens Jorien Kerstjens Kathelijn Keymolen Damien Lederer Björn Menten Bruno Pichon Sonia Rombout Yves Sznajer Ann Van Den Bogaert Kris Van Den Bogaert Joris Vermeesch Katrien Janssens 《黑龙江环境通报》2020,40(10):1272-1283
5.
Joke Muys Bettina Blaumeiser Yves Jacquemyn Claude Bandelier Nathalie Brison Saskia Bulk Patrizia Chiarappa Winnie Courtens Anne De Leener Marjan De Rademaeker Julie Désir Anne Destrée Koenraad Devriendt Annelies Dheedene Annelies Fieuw Erik Fransen Jean-Stéphane Gatot Philip Holmgren Mauricette Jamar Sandra Janssens Kathelijn Keymolen Damien Lederer Björn Menten Marije Meuwissen Benoit Parmentier Bruno Pichon Sonia Rombout Yves Sznajer Ann Van Den Bogaert Kris Van Den Bogaert Olivier Vanakker Joris Vermeesch Katrien Janssens 《黑龙江环境通报》2018,38(13):1120-1128
6.
7.
On the function of warning coloration: a black and yellow pattern inhibits prey-attack by naive domestic chicks 总被引:6,自引:0,他引:6
Summary Young chicks were offered a choice of warningly coloured black and yellow and non-warningly coloured green (or olive) prey. Unfed chicks were given palatable painted mealworms on their first day. They directed their first peck at both colour types at the same probability; however, they ate the warningly coloured ones at a much lower rate. This is due to an inhibition of attack which becomes effective after pecking. Chicks which were a few days old showed the same behaviour. Since the control prey was in this case painted with an olive mixture containing the same colours as the warningly coloured mealworms, it can be concluded that the inhibition is caused by the black and yellow coloration. With accumulating positive experience of the chicks, the inhibition decreased. For permanent avoidance it must therefore be supplemented by unpleasant experience. Accordingly, chicks handled the unpalatable black and yellow ringed caterpillars of Tyria jacobaeae only a few times and always for a short period when offered repeatedly. The inhibition caused by the black and yellow pattern is attributed to a genetically fixed predisposition to avoid warningly coloured black and yellow prey which is the result of evolutionary adaptation. 相似文献
8.
Javier Atalah Saskia A. Otto Marti J. Anderson Mark J. Costello Mark Lenz Martin Wahl 《Marine Biology》2007,153(2):199-211
Natural heterogeneity in ecological parameters, like population abundance, is more widely recognized and investigated than
variability in the processes that control these parameters. Experimental ecologists have focused mainly on the mean intensity
of predictor variables and have largely ignored the potential to manipulate variances in processes, which can be considered
explicitly in experimental designs to explore variation in causal mechanisms. In the present study, the effect of the temporal
variance of disturbance on the diversity of marine assemblages was tested in a field experiment replicated at two sites on
the northeast coast of New Zealand. Fouling communities grown on artificial settlement substrata experienced disturbance regimes
that differed in their inherent levels of temporal variability and timing of disturbance events, while disturbance intensity
was identical across all levels. Additionally, undisturbed assemblages were used as controls. After 150 days of experimental
duration, the assemblages were then compared with regard to their species richness, abundance and structure. The disturbance
effectively reduced the average total cover of the assemblages, but no consistent effect of variability in the disturbance
regime on the assemblages was detected. The results of this study were corroborated by the outcomes from simultaneous replicate
experiments carried out in each of eight different biogeographical regions around the world. 相似文献
9.
10.