全文获取类型
收费全文 | 216篇 |
免费 | 6篇 |
国内免费 | 5篇 |
专业分类
安全科学 | 6篇 |
废物处理 | 10篇 |
环保管理 | 16篇 |
综合类 | 60篇 |
基础理论 | 53篇 |
污染及防治 | 57篇 |
评价与监测 | 14篇 |
社会与环境 | 10篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 4篇 |
2022年 | 8篇 |
2021年 | 17篇 |
2020年 | 10篇 |
2019年 | 6篇 |
2018年 | 16篇 |
2017年 | 11篇 |
2016年 | 17篇 |
2015年 | 9篇 |
2014年 | 10篇 |
2013年 | 13篇 |
2012年 | 15篇 |
2011年 | 18篇 |
2010年 | 6篇 |
2009年 | 10篇 |
2008年 | 13篇 |
2007年 | 9篇 |
2006年 | 5篇 |
2005年 | 2篇 |
2004年 | 4篇 |
2003年 | 2篇 |
2002年 | 4篇 |
2001年 | 2篇 |
2000年 | 5篇 |
1999年 | 5篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1981年 | 1篇 |
排序方式: 共有227条查询结果,搜索用时 218 毫秒
31.
Brent D. Moyle Char-lee Moyle Alexandra Bec 《Journal of Environmental Policy & Planning》2018,20(1):31-44
The Great Barrier Reef (GBR) is a natural asset of global significance, spanning 2600?km’s along the Australian coastline. On the southern tip of the GBR is the Gladstone region, where high levels of industrial activity have been juxtaposed with the natural wonder, and World Heritage Listed, GBR. Given these competing local priorities, this research explores local perceptions of the GBR and its management. Exploratory analysis of 38 interviews with residents and stakeholders from Gladstone revealed a potential incongruence between environmental concern and support for more stringent management of the tourism and resources sectors on the GBR. A responsibility–accountability framework (RAF) for managing the use and protection of the GBR is developed by drawing on current theoretical frameworks and the results of the interviews. Importantly the framework highlights the importance of business responsibility combined with monitoring and control mechanisms to ensure accountability and to deliver transparency, education and partnership. Future research should apply the RAF for testing and application in other marine World Heritage Area contexts. 相似文献
32.
Magdalini Soupioni Kyriaki Vlachou Alexandra Psarologou Argyro Bekatorou 《毒物与环境化学》2016,98(10):1191-1199
AbstractThe extent to which selected ethanol and lactic acid production bioprocesses contribute to whey waste abatement was examined. Alcoholic fermentation of whey was carried out by kefir cells immobilized on grape stalks, delignified cellulosic materials, or brewer's spent grains. Lactic acid fermentation was also performed by free kefir cells with or without addition of brewer's spent grains as promoting material. Since whey fermentation rate is affected by the lactose uptake rate, 14C-labeled lactose was used to study the fermentation ability of kefir. The highest reductions in biochemical oxygen demand and chemical oxygen demand of whey, about 68% and 52%, respectively, were achieved by lactic acid fermentation in 6 h at 37 °C and pH 5.5, in the presence of 120 g brewer's spent grains. Additionally, at the same conditions, the highest 14C-labeled lactose uptake rate by kefir and consequently the highest alcoholic fermentation rate were also recorded. However, greater reductions in biochemical oxygen demand and chemical oxygen demand of whey are required prior to final disposal. 相似文献
33.
In this study, we used a within‐person daily research paradigm to examine the relationship between daily family–work conflict (FWC) and daily job performance. On the basis of theory on dynamic behavior, we hypothesized that concentration serves as a mechanism through which daily FWC impairs daily job performance. We further predicted that psychological detachment from work during time‐off (i.e., mentally switching off) buffers the negative relationship between daily FWC and daily job performance. Ninety‐five employees completed daily surveys over one workweek. Multilevel modeling results showed that daily FWC was negatively associated with daily job performance and that concentration mediated this relationship. Furthermore, general psychological detachment, but not daily psychological detachment, buffered the negative relationship between daily FWC and daily job performance. The current findings suggest that daily FWC has negative performance implications and that the general level rather than the daily level of psychological detachment from work helps alleviate the negative implications. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
34.
Jenna P. Bytheway Alexandra J. R. Carthey Peter B. Banks 《Behavioral ecology and sociobiology》2013,67(5):715-725
Many animals use olfaction to find food and avoid predators, and must negotiate environments containing odors of varying compositions, strengths, and ages to distinguish useful cues from background noise. Temporal variation in odor cues (i.e., “freshness”) seems an obvious way that animals could distinguish cues, yet there is little experimental evidence for this phenomenon. Fresh cues provide a more reliable indicator of donor presence than aged cues, but we hypothesize that the benefits of responding to aged cues depend on whether the cue indicates the proximity of a predator or a potential meal. As prey cannot remain eternally risk averse in response to predator odor, we predict that antipredator responses should diminish as predator cues age. In contrast, animals searching for food should investigate aged prey cues if investigation costs are sufficiently low and the potential benefit (a meal) sufficiently high; thus, we predict that predators will maintain interest in aged prey cues. We tested these ideas using free-ranging rats (Rattus spp.) in two separate experiments; firstly assessing giving-up densities in the presence of predator odor, and secondly examining investigation rates of prey odors. As predicted, giving-up densities dropped once predator odor had aged, but investigation rates remained similar for aged and fresh prey odor. Thus, rats used temporal variation in odor cues to evaluate the cost–benefit relationship of responding to predator and prey odors. We suggest that the ecological significance of variable cue age needs more research and should be considered when interpreting behavioral responses to olfactory information. 相似文献
35.
Alexandra?ZieritzEmail author Gemma?Clucas Lauren?Axtmann David?C.?Aldridge 《Marine Biology》2012,159(4):863-872
When feeding on blue mussels (Mytilus edulis), oystercatchers (Haematopus ostralegus) either stab into the mollusc’s gaping valves or hammer through its dorsal or ventral shell. Whilst the selectivity of hammering
and stabbing oystercatchers for specific prey morphologies has been well studied, the way in which the effects of environment
on M.
edulis morphology can in turn affect feeding methods of H. ostralegus is very poorly understood. Based on morphological analyses on randomly selected shells from three intertidal zones, this
study failed to detect differences in morphology or distribution of dorsally and ventrally hammered shells but confirms the
finding of previous authors that hammering oystercatchers select thinner mussels than stabbing birds. Additionally, we show
that this difference in optimal prey morphology can lead to spatial patterns in oystercatcher feeding behaviour. Whilst at
the low intertidal and higher mid intertidal zones, characterised by comparatively thick shells, most empty shells had apparently
been stabbed, hammering was the dominant feeding behaviour at the lower mid intertidal zone, where shells were thinner. Preference
of hammering birds for smaller mussels was not ubiquitous. Sagittal shell shape was predominantly influenced by allometric
growth effects and had only minor effect on prey selection. All oystercatchers preferred less inflated mussels, with the degree
of shell inflation gradually increasing with higher intertidal elevation. Our results illustrate the importance of small-scale
patterns in prey ecophenotypes in determining the distribution and feeding dynamics of wading birds. 相似文献
36.
Ghobashy Mohamed mohamady Sayed Waheed A. A. El-Helaly Alexandra 《Journal of Polymers and the Environment》2021,29(10):3364-3374
Journal of Polymers and the Environment - A Green nanomaterial synthesis could be considered as an alternative bio-controller source of insect pest management as well as saving the environment.... 相似文献
37.
Almeida C Pereira C Gomes T Bebianno MJ Cravo A 《Journal of environmental monitoring : JEM》2011,13(9):2559-2567
DNA damage was evaluated in the haemolymph of Mytilus galloprovincialis from nine sites along the south coast of Portugal using the comet assay. DNA damage was low, in the same range of sites considered to suffer low impact from genotoxic contaminants. Even so, differences between sites, seasons and genders were found. Highest values were in mussels from the main estuaries and the fishery harbour, reflecting higher genotoxin levels, whereas the lowest values can be used as a baseline for future work. Non-contaminant related factors (e.g. temperature and oxygen) were also shown to influence DNA damage. Between seasons, highest values were in summer related not only to the increase of tourism in this region (~10-fold), but also to temperature. Between genders, males were found to be more sensitive. The condition index was also generally higher in summer. Lipid peroxidation, another damage biomarker, was measured in gills to assess if there is any association between the responses of both biomarkers and if they are similarly affected by the same environmental conditions. LPO like DNA damage was higher in summer. This work confirms that DNA damage is a sensitive biomarker to discriminate genotoxic contamination, even in areas considered to suffer low impact from genotoxins. 相似文献
38.
Isabel M. Rojas Megan K. Jennings Erin Conlisk Alexandra D. Syphard Jack Mikesell Alicia M. Kinoshita Krista West Doug Stow Emanuel Storey Mark E. De Guzman Diane Foote Alexandria Warneke Amber Pairis Sherry Ryan Lorraine E. Flint Alan L. Flint Rebecca L. Lewison 《Conservation biology》2022,36(1):e13834
From a conservation perspective, quantifying potential refugial capacity has been predominantly focused on climate refugia, which is critical for maintaining the persistence of species and ecosystems. However, protection from other stressors, such as human-induced changes in fire and hydrology, that cause habitat loss, degradation, and fragmentation is also necessary to ensure that conservation efforts focused on climate are not undermined by other threats. Thus, conceptual and methodological advances for quantifying potential refugia from multiple anthropogenic stressors are important to support conservation efforts. We devised a new conceptual approach, the domains of refugia, for assessing refugial capacity that identifies areas where exposure to multiple stressors is low. In our framework, patterns of environmental variability (e.g., increased frequency of warm summers), thresholds of resilience, and extent and intensity of stressors are used to identify areas of potential refugia from a suite of ongoing anthropogenic stressors (e.g., changes in fire regime). To demonstrate its utility, we applied the framework to a Southern California landscape. Sites with high refugial capacity (super-refugia sites) had on average 30% fewer extremely warm summers, 20% fewer fire events, 10% less exposure to altered river channels and riparian areas, and 50% fewer recreational trails than the surrounding landscape. Our results suggest that super-refugia sites (∼8200 km2) for some natural communities are underrepresented in the existing protected area network, a finding that can inform efforts to expand protected areas. Our case study highlights how considering exposure to multiple stressors can inform planning and practice to conserve biodiversity in a changing world. 相似文献
39.
Thornton Grace L. Stevens Brian French Shannon K. Shirose Leonard J. Reggeti Felipe Schrier Nick Parmley E. Jane Reid Alexandra Jardine Claire M. 《Environmental science and pollution research international》2022,29(23):34137-34146
Environmental Science and Pollution Research - Anticoagulant rodenticides (ARs) are used globally to control rodent pest infestations in both urban and agricultural settings. It is well documented... 相似文献
40.
Brian R. Sturtevant Robert M. Scheller Brian R. Miranda Douglas Shinneman Alexandra Syphard 《Ecological modelling》2009
Fire regimes result from reciprocal interactions between vegetation and fire that may be further affected by other disturbances, including climate, landform, and terrain. In this paper, we describe fire and fuel extensions for the forest landscape simulation model, LANDIS-II, that allow dynamic interactions among fire, vegetation, climate, and landscape structure, and incorporate realistic fire characteristics (shapes, distributions, and effects) that can vary within and between fire events. We demonstrate the capabilities of the new extensions using two case study examples with very different ecosystem characteristics: a boreal forest system from central Labrador, Canada, and a mixed conifer system from the Sierra Nevada Mountains (California, USA). In Labrador, comparison between the more complex dynamic fire extension and a classic fire simulator based on a simple fire size distribution showed little difference in terms of mean fire rotation and potential severity, but cumulative burn patterns created by the dynamic fire extension were more heterogeneous due to feedback between fuel types and fire behavior. Simulations in the Sierra Nevada indicated that burn patterns were responsive to topographic features, fuel types, and an extreme weather scenario, although the magnitude of responses depended on elevation. In both study areas, simulated fire size and resulting fire rotation intervals were moderately sensitive to parameters controlling the curvilinear response between fire spread and weather, as well as to the assumptions underlying the correlation between weather conditions and fire duration. Potential fire severity was more variable within the Sierra Nevada landscape and also was more sensitive to the correlation between weather conditions and fire duration. The fire modeling approach described here should be applicable to questions related to climate change and disturbance interactions, particularly within locations characterized by steep topography, where temporally or spatially dynamic vegetation significantly influences spread rates, where fire severity is variable, and where multiple disturbance types of varying severities are common. 相似文献