全文获取类型
收费全文 | 2139篇 |
免费 | 18篇 |
国内免费 | 24篇 |
专业分类
安全科学 | 55篇 |
废物处理 | 69篇 |
环保管理 | 258篇 |
综合类 | 473篇 |
基础理论 | 440篇 |
环境理论 | 1篇 |
污染及防治 | 638篇 |
评价与监测 | 115篇 |
社会与环境 | 117篇 |
灾害及防治 | 15篇 |
出版年
2023年 | 21篇 |
2022年 | 19篇 |
2021年 | 31篇 |
2020年 | 23篇 |
2019年 | 28篇 |
2018年 | 52篇 |
2017年 | 56篇 |
2016年 | 66篇 |
2015年 | 73篇 |
2014年 | 81篇 |
2013年 | 91篇 |
2012年 | 88篇 |
2011年 | 138篇 |
2010年 | 118篇 |
2009年 | 135篇 |
2008年 | 121篇 |
2007年 | 126篇 |
2006年 | 89篇 |
2005年 | 64篇 |
2004年 | 92篇 |
2003年 | 57篇 |
2002年 | 76篇 |
2001年 | 71篇 |
2000年 | 41篇 |
1999年 | 20篇 |
1998年 | 24篇 |
1997年 | 28篇 |
1996年 | 23篇 |
1995年 | 33篇 |
1994年 | 27篇 |
1993年 | 8篇 |
1992年 | 19篇 |
1991年 | 27篇 |
1990年 | 14篇 |
1989年 | 19篇 |
1988年 | 7篇 |
1985年 | 5篇 |
1984年 | 8篇 |
1982年 | 13篇 |
1981年 | 10篇 |
1980年 | 5篇 |
1979年 | 11篇 |
1970年 | 10篇 |
1968年 | 5篇 |
1967年 | 5篇 |
1966年 | 5篇 |
1965年 | 8篇 |
1964年 | 5篇 |
1960年 | 6篇 |
1956年 | 5篇 |
排序方式: 共有2181条查询结果,搜索用时 0 毫秒
181.
de Villiers MM van Eeden CM Malan SF Devarakonda B Liebenberg W Kolling WM 《Journal of environmental science and health. Part. B》2005,40(2):215-231
The adsorption of amitraz to various adsorbents was studied in terms of the amount and rate of adsorption and the effect that adsorption had on the stability of amitraz in an aqueous environment. Adsorption results showed that in terms of their ability to adsorb amitraz from solution the adsorbents tested in this study can be ordered as follows: coarse carbon > cation exchange resin > or = anion exchange resin > fine carbon. Amitraz was not adsorbed on sand and potassium oxihumate. Adding sodium lauryl sulfate and potassium oxihumate to aqueous suspensions of suspended adsorbents containing adsorbed amitraz showed that both these anionic surfactants significantly increased the hydrolysis rate because the half-lives for amitraz was reduced from 27 days for a suspension to only 8 hours for amitraz adsorbed to a cation exchange resin and suspended in an aqueous buffer pH 5.8 containing 0.5% of the anionic surfactant sodium lauryl sulfate and 12 hours when 1% potassium oxihumate was added. 相似文献
182.
183.
184.
Conceptualising climate change in rural Australia: community perceptions, attitudes and (in)actions 总被引:2,自引:0,他引:2
Public engagement and support is essential for ensuring adaptation to climate change. The first step in achieving engagement
is documenting how the general public currently perceive and understand climate change issues, specifically the importance
they place on this global problem and identifying any unique challenges for individual communities. For rural communities,
which rely heavily on local agriculture industries, climate change brings both potential impacts and opportunities. Yet, to
date, our knowledge about how rural residents conceptualise climate change is limited. Thus, this research explores how the
broader rural community—not only farmers—conceptualises climate change and responsive activities, focussing on documenting
the understandings and risk perceptions of local residents from two small Australian rural communities. Twenty-three semi-structured
interviews were conducted in communities in the Eden/Gippsland region on the border of New South Wales and Victoria and the
north-east of Tasmania. There are conflicting views on how climate change is conceptualised, the degree of concern and need
for action, the role of local industry, who will ‘win’ and ‘lose’, and the willingness of rural communities to adapt. In particular,
residents who believed in anthropogenic or human-induced factors described the changing climate as evidence of ‘climate change’,
whereas those who were more sceptical termed it ‘weather variability’, suggesting that there is a divide in rural Australia
that, unless urgently addressed, will hinder local and national policy responses to this global issue. Engaging these communities
in the twenty-first-century climate change debate will require a significant change in terminology and communication strategies. 相似文献
185.
El Zrelli Radhouan Rabaoui Lotfi Daghbouj Nabil Abda Heithem Castet Sylvie Josse Claudie van Beek Pieter Souhaut Marc Michel Sylvain Bejaoui Nejla Courjault-Radé Pierre 《Environmental science and pollution research international》2018,25(15):14690-14702
Environmental Science and Pollution Research - Since the establishment of the coastal industrial complex in Gabes city (Gulf of Gabes, SE Tunisia), hundred million tons of untreated phosphogypsum... 相似文献
186.
Höss S Claus E Von der Ohe PC Brinke M Güde H Heininger P Traunspurger W 《Environment international》2011,37(5):940-949
Soft sediments are often highly polluted as many of the toxic chemicals introduced into surface waters bind to settling particles. The resulting accumulation of pollutants in the sediments poses a risk for benthic communities. However, pollution induced changes in benthic communities have been difficult to determine when using macro-invertebrates as bioindicators, as these organisms are often absent in soft sediment. The present study therefore examined the ability of meiofaunal organisms, specifically, nematodes, to assess the ecological status of soft sediments. Over a 9-year period, nematode communities present in sediments collected from large rivers and lake Constance in Germany were studied. These sediments showed a large range of physico-chemical properties and anthropogenic contamination. After the degree of metal and organic contamination was translated into ecotoxicologically more relevant toxic units (TUs), multivariate methods were used to classify nematode taxa in species at risk (NemaSPEAR) or not at risk (NemaSPE(not)AR). This approach clearly distinguished the influence of sediment texture from that of the toxic potential of the samples and thus allowed classification of the nematode species according to their sensitivity to or tolerance of toxic stress. Two indices, expressing the proportion of species at risk within a sample (NemaSPEAR[%](metal), NemaSPEAR[%](organic)), were calculated from independent data sets obtained in field and experimental studies and showed good correlations with the toxic potential (field data) or chemical concentrations (microcosm data). NemaSPEAR[%] indices for metal and organic pollution were therefore judged to be suitable for assessing the impact of chemical contamination of freshwater soft sediments. 相似文献
187.
The development and effective introduction of strategies designed to ensure the ecologically and economically sustainable utilization of coastal and marine resources is perhaps the major challenge for Small Island Developing States (SIDS). In response, the 1994 Barbados Programme of Action (BPoA) called upon the SIDS to implement appropriate coastal and marine strategies and, crucially, ensure that such strategies were integrated into sustainable national development plans (NDPs). This article examines the extent to which contemporary NDPs and donor support programmes have incorporated the fisheries sector — arguably the most important coastal/marine resource for many SIDS — into such documents. Applying an assessment methodology, originally developed to identify levels of environmental mainstreaming within World Bank country assistance strategies to NDPs and donor support programmes, we are able to identify those SIDS who have most effectively integrated the fisheries sector into such documents. Comparison with data indicating the importance of the sector to the national economy (in terms of generating foreign exchange, employment generation and/or supporting domestic protein consumption levels) enables us to pinpoint those countries with substantial fisheries sectors, but a correspondingly lower than expected degree of sectoral mainstreaming. We suggest that the January 2005 review of the BPoA offers an opportune moment for such countries to redress these omissions. 相似文献
188.
Sheil D Puri R Wan M Basuki I van Heist M Liswanti N Rukmiyati Rachmatika I Samsoedin I 《Ambio》2006,35(1):17-24
Tropical forest people often suffer from the same processes that threaten biodiversity. An improved knowledge of what is important to local people could improve decision making. This article examines the usefulness of explicitly asking what is important to local people. Our examples draw on biodiversity surveys in East Kalimantan (Indonesian Borneo). With local communities we characterized locally valued habitats, species, and sites, and their significance. This process clarified various priorities and threats, suggested refinements and limits to management options, and indicated issues requiring specific actions, further investigation, or both. It also shows how biological evaluations are more efficient with local guidance, and reveals potential for collaborations between local communities and those concerned with conservation. Such evaluations are a first step in facilitating the incorporation of local concerns into higher-level decision making. Conservationists who engage with local views can benefit from an expanded constituency, and from new opportunities for pursuing effective conservation. 相似文献
189.
Nyberg Lars Lundström Ulla Söderberg Ulf Danielsson Rolf van Hees Patrick 《Water, Air, & Soil Pollution: Focus》2001,1(1-2):241-263
In 1994, a large survey of soil chemistry was undertaken in thecounty of Värmland in central Sweden (Lundström et al., 1998).The southern part of the county was affected by soilacidification whereas there were no such indications in thenorthern part. To investigate the influence of soil chemistryon the trees at the specific sites, the survey was continued byan analysis of needle chemistry (Norway spruce) which wasundertaken at 150 of the 180 sites, and of tree growth at 65 ofthe 180 sites. Growth was expressed as a ratio between expectedgrowth, estimated with a national, empirical growth model, andthe growth observed in the field. In statistical analyses,using rank correlation, PCA and PLS, there were only weakindications of an influence of soil chemistry on needlechemistry and on tree growth. A moderate correlation betweennitrogen and sulphur in needles was found, which wasinterpreted as an effect of deposition and of processes in thetree canopy. No obvious regional pattern of the growth ratiowas found, in contrast to the clear pattern of soilacidification. The statistical analysis could not with anycertainty point out any of the soil chemistry variables asespecially important for the tree growth ratio. 相似文献
190.
Carmen Arguedas Daan P. van Soest 《Journal of Environmental Economics and Management》2009,58(2):192-205
Investment subsidies are widely used to induce adoption of new technologies that can lower the (marginal) cost of reducing emissions. To economize on these subsidies, governments would like to distinguish between firms that need to receive a subsidy to adopt a new technology, and firms that would adopt that technology even without subsidies. We show that policies consisting of a menu of emission taxes and investment subsidies can potentially induce firms to self-select. 相似文献