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V. V. Tuzhilkina 《Russian Journal of Ecology》2009,40(4):227-232
To estimate the response of conifers to long-term industrial air pollution at the pigment system level, the dynamics of photosynthetic pigments have been studied in needles of Scots pine (Pinus sylvestris L.) and Siberian spruce (Picea obovata Ledeb.) growing at different distances from the emission source (a pulp and paper mill). It has been shown that the pigment apparatus of spruce. The results show that in spruce, unlike in pine, the pigment apparatus remains unchanged under the effect of weak pollution. Long-term exposure at high levels of industrial emission results in suppression of chlorophyll and carotenoid syntheses in pine but stimulates pigment production in spruce. An increase in the contents of pigments in the needles of conifers growing in the impact zone of the pulp and paper mill reflects a compensatory mechanism of adaptation of their pigment system to long-term stress exposure. 相似文献
13.
S. M. Shafigullina 《Russian Journal of Ecology》2009,40(3):218-226
Interannual changes in geobiont and chortobiont abundance on the islands of Kuibyshev Reservoir are largely determined by flood conditions, because the seasonal average abundance of many taxa is negatively correlated to the water level in May and June. Floods influence the abundance of these animals both directly and indirectly, through biocenotic connections and some aspects of behavior. Long-term positive trends are observed in the abundance of many species. The hypothesis is proposed that this increase in the abundance of geobionts and chortobionts is a consequence of adaptation processes in these communities, which are stimulated by the flood regime of the reservoir. 相似文献
14.
The placement of 1918 redwing nests has been analyzed, including 214 nests of 90 marked females (2–8 known nests per female). A high level of intraspecific and individual variation in utilization of different types of nest supports is described. It is shown that redwings choose nest sites without regard to previous experience (either positive or negative) or to the placement of their parent nest. Under conditions of the northern taiga, such behavior provides for significant reduction of chick mortality by the end of the season. This is con- firmed by comparison with the song thrush (T. philomelos), which nests mainly on spruce trees. 相似文献
15.
Global and national commitments to slow biodiversity loss by expanding protected area networks also provide opportunities to evaluate conservation priorities in the face of climate change. Using recently developed indicators of climatic macrorefugia, environmental diversity, and corridors, we conducted a systematic, climate-informed prioritization of conservation values across North America. We explicitly considered complementarity of multiple conservation objectives, capturing key niche-based temperature and moisture thresholds for 324 tree species and 268 songbird species. Conservation rankings were influenced most strongly by climate corridors and species-specific refugia layers. Although areas of high conservation value under climate change were partially aligned with existing protected areas, ∼80% of areas within the top quintile of biome-level conservation values lack formal protection. Results from this study and application of our approach elsewhere can help improve the long-term value of conservation investments at multiple spatial scales. 相似文献
16.
Heavily featured over the last few years in global research and policy agreements, Nature-Based Solutions (NBS) remain however exposed to much debate over the ways their current design and ability to achieve both environmental goals and social needs. As they become mainstream climate mitigation and adaptation options, their capacity to deliver expected benefits, especially when contemplating equity and justice, is at least uncertain. Through a critical review of existing debates and perspectives on NBS, this paper questions their uptake and points at the frequent embeddedness of NBS in speculative and elite-based development paths in both urban and rural areas. We present an alternative, justice-oriented approach to NBS so that projects can avoid nature-enable dispossession and instead build nature-inspired justice that prioritizes the needs, identities, and livelihoods of the most ecologically and socially vulnerable residents. 相似文献
17.
《Environmental Communication: A Journal of Nature and Culture》2013,7(2):193-211
This case study investigates cross-platform framing process and framing alignment strategies of the world famous elephant conservation NGO. It examines how the intercultural adaptation facilitates the frame transformation against entrenched domesticated elephant traditions in Thailand. Besides web observation, this study conducted two field trips to interview the NGO staff and conservation experts, and observed human–elephant interaction. Enhancing the understanding of ecotourism, this study expands the framing theory by incorporating cross-platform and cross-cultural adaptation factors and provides insights of an effective Asian ecotourism model which transcends cultural differences and overcomes resistance by disseminating culturally sensitive and integrated framing strategies through various communication channels. 相似文献
18.
《Journal of Environmental Planning and Management》2012,55(11):1994-2014
Adapting to the impacts of human-caused climate change is a critical challenge facing cities worldwide. But, local climate adaptation planning is in its infancy. Early on, cities must decide whether to take a narrow-scope approach focused solely on reducing risks from climate impacts or to take a broad-scope approach embedding adaptation planning within wider ranging community concerns. They also must decide whether or not to formally involve their planning agency in adaptation planning. We used content analysis methods to assess a national sample of United States municipal plans. We find that cities with plans with a narrow-scope approach, focused on reducing risks, perform better in terms of plan integration and including more land use policies that can steer development out of hazardous areas. Formal involvement of planning agencies in adaptation planning processes is associated with more plan integration, but not necessarily inclusion of more land use policies. 相似文献
19.
Attitudes towards relocation following Hurricane Sandy: should we stay or should we go? 总被引:1,自引:0,他引:1
This study explores the dilemma of whether to rebuild or relocate from the areas devastated by Hurricane Sandy in 2012. Since disasters represent the discernible manifestation of other complex coastal hazards, they offer a window of opportunity to engage residents in the dialogue on relocation as sometimes the most effective risk reduction strategy. The following research evaluates attitudes towards relocation and willingness to consider buyout among 46 surveyed households located in highly‐affected communities five months after Sandy. It also gauges perceptions of coastal risks and recovery concerns as drivers of relocation, the level of support for different adaptation strategies, and preferences related to the relocation process itself on how and where to relocate and with what type of assistance. Responses indicate that, even though residents prefer structural solutions to address coastal hazards, they are not fully opposed to the possibility of relocation mostly for personal health and safety reasons. 相似文献
20.
《Sustainable Development》2018,26(4):379-398
The aim of this paper is to assess to what extent producers' participation in fair trade can increase their adaptive capacity and make them more resilient to climate change. Based on the adaptation deficit framework of Fankhauser and McDermott (2014) and an expert interview with 39 producer organizations from Latin America, Asia and Africa, we first determine the perception and the impacts of climate change on fair trade producers' organizations. We then analyze how fair trade is helping producers to increase their adaptive capacity. Our results suggest that fair trade affects the adaptive capacity of smallholder farmers in developing countries in two ways. First, it can work as a growth policy and affects the disposable income, which is then partly spent on adaptation measures. Second, by increased knowledge exchange, a higher degree of social capital and a better access to the international community, it makes the supply of adaptation more efficient. Copyright © 2017 John Wiley & Sons, Ltd and ERP Environment 相似文献