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111.
Managing climate change risks in New York City’s water system: assessment and adaptation planning 总被引:4,自引:0,他引:4
Cynthia Rosenzweig David C. Major Kate Demong Christina Stanton Radley Horton Melissa Stults 《Mitigation and Adaptation Strategies for Global Change》2007,12(8):1391-1409
Managing risk by adapting long-lived infrastructure to the effects of climate change must become a regular part of planning
for water supply, sewer, wastewater treatment, and other urban infrastructure during this century. The New York City Department
of Environmental Protection (NYCDEP), the agency responsible for managing New York City’s (NYC) water supply, sewer, and wastewater
treatment systems, has developed a climate risk management framework through its Climate Change Task Force, a government-university
collaborative effort. Its purpose is to ensure that NYCDEP’s strategic and capital planning take into account the potential
risks of climate change—sea-level rise, higher temperature, increases in extreme events, changes in drought and flood frequency
and intensity, and changing precipitation patterns—on NYC’s water systems. This approach will enable NYCDEP and other agencies
to incorporate adaptations to the risks of climate change into their management, investment, and policy decisions over the
long term as a regular part of their planning activities. The framework includes a 9-step Adaptation Assessment procedure.
Potential climate change adaptations are divided into management, infrastructure, and policy categories, and are assessed
by their relevance in terms of climate change time-frame (immediate, medium, and long term), the capital cycle, costs, and
other risks. The approach focuses on the water supply, sewer, and wastewater treatment systems of NYC, but has wide application
for other urban areas, especially those in coastal locations. 相似文献
112.
This paper reports the findings of a two‐wave longitudinal study investigating relationships between organizational and individual career management activities and organizational commitment in the early years of graduate careers. Several hypotheses are tested and receive mixed support. High organizational commitment predicts the practice of career management activities by graduates to further their career within the organization while low commitment is closely associated with behaviour aimed at furthering the career outside the organization. Graduates who manage their own careers also receive more career management help from their employer. This suggests that there may be the potential for employers to create a ‘virtuous circle’ of career management in which individual and organizational activities complement each other. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
113.
Recent sea-level rise has mostly been attributed to global warming and this process is expected to continue for centuries. The extent of the impact of sea level rise on tourism in Ghana is unknown though there are predictions that some prominent tourism facilities are at risk. This paper assessed the potential impact of enhanced sea level rise (ESLR) for different IPCC scenarios on tourism facilities along the coast of Accra. Shorelines for 1974 and 2005 were extracted from orthophotos and topographic maps, and vulnerability for tourism facilities estimated. Mean sea level measurements indicated an average rise of 3.3 mm/year, while the shoreline eroded by as much as 0.86 m/year. Predictions for Ghana showed 10 cm, 23.4 cm and 36.4 cm sea level rise for 2020, 2060 and 2100 respectively with 1990 as base year. Modelled predictions for the years 2020, 2060 and 2100 based on A2 (enhanced regional economic growth) and B2 (more environmentally focused) IPCC scenarios indicated that 13 tourism facilities are at risk to sea level rise. Out of the total number of tourism facilities at risk, 31 % cannot physically withstand the event of sea level rise hazard. In terms of socio-economic vulnerability, accommodation facilities are the most susceptible. Salinization and sanitation problems along the coast will adversely affect tourism. 相似文献
114.
Kate Millar 《Journal of Agricultural and Environmental Ethics》2006,19(6):591-592
115.
This paper focuses on the issues arising from Local Agenda 21 where the role of local authorities is seen as vital in promoting and achieving sustainable development. The implications of the current forms of public sector restructuring for local authorities, and in particular the consequences of the requirement to contract out the delivery and management of traditional environmental services such as grounds maintenance are considered. The paper concludes that the ongoing processes of local government restructuring, together with the removal of many functions from local democratic control, are reducing the capacity of local communities to respond positively to the demands of Local Agenda 21. 相似文献
116.
Yong Cui Shuming Liu Kate Smith Hongying Hu Fusheng Tang Yuhong Li Kanghua Yu 《环境科学学报(英文版)》2016,28(10):79-91
Stainless steels generally have extremely good corrosion resistance, but are still susceptible to pitting corrosion. As a result, corrosion scales can form on the surface of stainless steel after extended exposure to aggressive aqueous environments. Corrosion scales play an important role in affecting water quality. These research results showed that interior regions of stainless steel corrosion scales have a high percentage of chromium phases. We reveal the morphology, micro-structure and physicochemical characteristics of stainless steel corrosion scales. Stainless steel corrosion scale is identified as a podiform chromite deposit according to these characteristics, which is unlike deposit formed during iron corrosion. A conceptual model to explain the formation and growth of stainless steel corrosion scale is proposed based on its composition and structure. The scale growth process involves pitting corrosion on the stainless steel surface and the consecutive generation and homogeneous deposition of corrosion products, which is governed by a series of chemical and electrochemical reactions. This model shows the role of corrosion scales in the mechanism of iron and chromium release from pitting corroded stainless steel materials. The formation of corrosion scale is strongly related to water quality parameters. The presence of HClO results in higher ferric content inside the scales. Cl− and SO42 − ions in reclaimed water play an important role in corrosion pitting of stainless steel and promote the formation of scales. 相似文献
117.
Kate L. Palphramand Geraldine Newton-Cross Piran C. L. White 《Behavioral ecology and sociobiology》2007,61(3):401-413
Badgers are carnivores that show considerable variation in their social and spatial organization. At the westernmost part of their range, in Britain and Ireland, variation in spatial organization appears to be determined by the availability of resources. However, the majority of studies has focussed at one end of the social/spatial spectrum, where population densities are high and adjacent territories are contiguous and non-overlapping. To examine whether the same limiting factors appear to apply across a wider range of badger densities, we established a study site in a predominantly coniferous habitat within an upland area of northeast England, where population densities were predicted to be low. Seasonal home ranges of individual badgers were largest in autumn, followed by summer and spring, then winter. This pattern is reflective of the likely seasonal changes in food availability within the area, as opposed to being related to breeding patterns. There were also significant correlations between territory size and the number of grassland patches (positive) and the proportion of grassland (negative), which are consistent with predictions from the Resource Dispersion Hypothesis. Although badgers at the site were living at low to moderate densities relative to many other studied populations in Britain, they showed patterns of spatial organization that were close to those of high-density populations. The nature of the relationship between resource availability and abundance patterns is likely to have important consequences for the conservation and management of badgers and other species that show flexible spatial organization. 相似文献
118.
Dickey CA Heal KV Cape JN Stidson RT Reeves NM Heal MR 《Journal of environmental monitoring : JEM》2005,7(2):137-144
Soil is an important compartment in the environmental cycling of trichloroacetic acid (TCA), but soil TCA concentration is a methodologically defined quantity; analytical methods either quantify TCA in an aqueous extract of the soil, or thermally decarboxylate TCA to chloroform in the whole soil sample. The former may underestimate the total soil TCA, whereas the latter may overestimate TCA if other soil components (e.g. humic material) liberate chloroform under the decarboxylation conditions. The aim of this work was to show that extraction and decarboxylation methods yield different TCA concentrations because the decarboxylation method can also determine "bound" TCA. Experiments with commercial humic acid solutions showed there was no additional chloroform formation under decarboxylation conditions, and that all TCA in a TCA-humic acid mixture could be quantitatively determined (108 +/- 13%). Anion exchange resin was used as a provider of solid-phase TCA binding; only 5 +/- 1% of a TCA solution mixed with the resin was present in the aqueous extract subsequently separated from the resin, yet the decarboxylation method yielded mass balance (123 +/- 22%) with TCA remaining in the resin. In aqueous extraction of a range of soil samples (with or without added TCA spike), the decarboxylation method was able to satisfactorily account for TCA in the extractant + residue post-extraction, compared with whole-soil TCA (+ spike) pre-extraction: e.g. mass balances for unspiked soil from Sikta spruce and larch forest were 99 +/- 8% and 93 +/- 6%, respectively, and for TCA-spiked forest and agricultural soils were 114 +/- 13% and 102 +/- 2%. In each case recovery of TCA in the extractant was substantially less than 100%(<20% for unspiked soils, <55% for spiked soils). Extraction efficiencies were generally lower in more organic soils. The results suggest that analytical methods which utilise aqueous extraction may underestimate whole-soil TCA concentrations. Application of both methodologies together may enhance insight into TCA behaviour in soil. 相似文献
119.
'Glocalisation' and ecological modernity: Challenges for local environmental governance in Australia 总被引:1,自引:0,他引:1
Kate Crowley 《Local Environment》1998,3(1):91-97
120.
Xiyan Xu Shuming Liu Ying Liu Kate Smith Xiaoting Wang Junyu Li Ziqing M Zhangqing Wang Yong Cui 《环境科学学报(英文版)》2020,32(3):218-226
The current study analyzes the contribution of 10 water quality parameters (including pH, turbidity, conductivity, total dissolved solids (TDS), hardness, total organic carbon (TOC), alkalinity, calcium ions, chlorides and sulfates) to corrosion extent of stainless steel valves taken from different locations in a reverse osmosis system of a reclaimed water plant. The valves were in service for 5 years. Raman spectroscopy and X-ray photoelectron spectroscopy analyses are conducted to quantify corrosion products on different valves under various water quality conditions. On that basis, bivariate and multivariate regression analyses between the 10 water quality parameters and the corrosion extent of valve specimens (represented by metal loss percentage (MLP) values) are carried out to check the contribution of those water quality parameters to MLP. The results indicate that the proportions of metal oxides as corrosion products vary according to the corrosion extent of the valves. Although no linear correlation is found, all 10 water quality parameters except for pH show a significant positive correlation with the MLP values of the valve specimens. Moreover, results of multivariate regression suggest that the variation of MLP can be explained by turbidity, TDS, TOC and sulfates. A positive contribution of turbidity, TDS and TOC to MLP is observed, whereas the contribution of sulfates is negative. The results from the current work help to identify the reasons for water quality-induced failure of stainless steel equipment in RO systems. 相似文献