全文获取类型
收费全文 | 62篇 |
免费 | 0篇 |
国内免费 | 1篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 1篇 |
环保管理 | 18篇 |
综合类 | 11篇 |
基础理论 | 12篇 |
污染及防治 | 12篇 |
评价与监测 | 2篇 |
社会与环境 | 6篇 |
出版年
2021年 | 3篇 |
2020年 | 3篇 |
2017年 | 2篇 |
2016年 | 3篇 |
2015年 | 2篇 |
2013年 | 6篇 |
2012年 | 1篇 |
2011年 | 4篇 |
2010年 | 2篇 |
2009年 | 8篇 |
2008年 | 4篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2005年 | 4篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1991年 | 1篇 |
1984年 | 1篇 |
1977年 | 1篇 |
1973年 | 2篇 |
1971年 | 1篇 |
排序方式: 共有63条查询结果,搜索用时 0 毫秒
41.
The European Union Water Framework Directive (WFD) enshrines several economic principles in pursuit of 'good ecological status' for Europe's waters and rationalising water use in society. The implicit principle of maximising the social value from use of a scarce resource is reminiscent of the debate about treating water as an economic good, which has competing uses in society. This paper locates the debate about the economic value of water in the requirements of WFD. Specifically, we consider the implications of national reporting requirements for the economic characterisation report that stress the identification of relative value derived from use. As part of the Scottish contribution to the UK reporting exercise, we use a range of secondary data sources to derive economic values for water on a sector basis. We suggest whether the implications of different water values can be followed through in the WFD. 相似文献
42.
Knook Jorie Dynes Robyn Pinxterhuis Ina de Klein Cecile A. M. Eory Vera Brander Matthew Moran Dominic 《Environmental management》2020,65(2):243-256
Environmental Management - Although the link between agriculture and diffuse water pollution has been understood for decades, there is still a need to implement effective measures to address this... 相似文献
43.
Managing diffuse water pollution from agricultural land continues to be one of the more intractable challenges for environmental policy. The advent of the Water Framework Directive places the onus on EU member states to identify reasons why water bodies fail or are at risk of failure to meet good ecological status. In such cases, programmes of measures are to be enacted to mitigate the causes at least cost. Failing this, users may ultimately be faced with the full costs of pollution. This paper considers the scope for measures that address nitrogen and phosphorus pollution at source. Specifically the paper relates the diffuse pollution problem to the extent of over application of nitrogen and phosphorus. Data envelopment analysis applied to English cereal and dairy farmers, provides an indication of resource use and evidence of over application. This inefficiency provides a potential basis for either a least cost abatement approach using effective information and advice, or alternatively a pollution charge. 相似文献
44.
Fouling communities were transferred between Wollongong Harbour (Australia), a relatively unpolluted area, and nearby Port Kembla Harbour which is affected by pollution from nearby heavy industries. Those that had been transferred from Wollongong Harbour were similar in structure after two months to those that had developed entirely in Port Kembla Harbour. Conversely, the communities transferred from Port Kembla Harbour had a similar structure to those that had developed only in Wollongong Harbour. Many of the species transferred from Wollongong Harbour were thought to have been killed by periodic high concentrations of pollutants or overgrown by more competitive species. Those few that survived the polluted conditions were mainly bryozoans and serpulids. Surprisingly, many supposedly pollution-tolerant species transferred from Port Kembla Harbour did not survive in Wollongong Harbour. It is suggested that this was because these animals could not tolerate the lower nutrient conditions in the latter area. Space once occupied by these species was quickly colonised by species found only in Wollongong Harbour. These results have important implications for the functioning of these communities. 相似文献
45.
从天然河水中富集分离出8株异养硝化-好氧反硝化(HN-AD)菌株.将单菌株根据其自身的种属类别及脱氮性能复配成5种由不同菌株构成的菌剂,优选出脱氮效果最佳的复配菌剂-2,其包括6株菌株,分别为Pseudomonas stutzeri MR1,Pseudomonas sp.MR2,Pseudomonas sp.MR3,P... 相似文献
46.
Generally speaking, there is a greater amount of quantitative data available to measure and model the cumulative environmental or economic impacts of mining than the social impacts. In part, this is because social impacts are often inherently more difficult to quantify, but historically there have also been fewer regulatory drivers for companies or state agencies to invest in collecting such data. Regulators in some jurisdictions are now starting to require resource companies to report on aspects of their social performance, but companies and regulators are still struggling to identify appropriate metrics, particularly in regards to cumulative impacts. This paper describes an innovative quantitative approach to tracking how communities experience and respond to increased mining activity, using data from the complaints registers maintained by mines located in the Upper Hunter Valley in New South Wales, Australia. In this study, complaints lodged with five separate mines adjacent to the township of Muswellbrook over several years were aggregated and trends analysed. The aggregated set showed that complaint frequency increased with the increase in mining activity but then decreased as individual complaints were addressed. However, when complaints from near-neighbours were removed, it emerged that the proportion of complaints that came from the town itself steadily increased over time. Further analysis indicated that this increase was closely associated with the amount of mine-disturbed land that could be seen from the town over time, as measured using a combination of remotely sensed data and a digital elevation model. This is persuasive evidence of a cumulative social impact that is more than just the sum of the local impacts of individual mines. 相似文献
47.
Ground water input to coastal salt ponds of southern Rhode Island estimated using 226Ra as a tracer 总被引:2,自引:0,他引:2
The naturally occurring radionuclide 226Ra (t1/2 = 1600 years) was used as a tracer to determine ground water input to Point Judith, Potter, Green Hill and Ninigret ponds in southern Rhode Island. Measurements of 226Ra activity were made in samples collected from salt ponds, pore waters, sediments, and local ground water wells during June-August, 1997. These results were combined with a simple box model to derive ground water input fluxes of 0.1-0.3 cm3 cm-2 d-1 (2-5 x 10(7) L d-1), which are comparable to previous estimates of ground water input to these ponds. 相似文献
48.
Zhengsheng Lu Moran Wang Mingkai Zhang Ji Li Ying Xu Hanchang Shi Yanchen Liu Xia Huang 《Frontiers of Environmental Science & Engineering》2020,14(3):45
49.
50.