全文获取类型
收费全文 | 39篇 |
免费 | 0篇 |
专业分类
安全科学 | 2篇 |
环保管理 | 7篇 |
综合类 | 6篇 |
基础理论 | 8篇 |
污染及防治 | 11篇 |
评价与监测 | 3篇 |
社会与环境 | 1篇 |
灾害及防治 | 1篇 |
出版年
2015年 | 2篇 |
2013年 | 2篇 |
2011年 | 5篇 |
2010年 | 1篇 |
2008年 | 1篇 |
2007年 | 2篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2004年 | 1篇 |
2003年 | 2篇 |
2002年 | 2篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1965年 | 1篇 |
1958年 | 1篇 |
1954年 | 1篇 |
排序方式: 共有39条查询结果,搜索用时 15 毫秒
21.
22.
Effects of Natural Disasters on Conservation Policies: The Case of the 2008 Wenchuan Earthquake,China 总被引:1,自引:0,他引:1
Conservation policies are increasing in response to human-induced ecosystem degradation, but little is known about their interplay
with natural disasters. Through an analysis of satellite imagery and field data we evaluated the impacts of a devastating
earthquake on forest recovery and avoided forest loss estimated to have been obtained by two of the largest conservation programs
in the world. Results show that more than 10% of the forests in Wenchuan County, Sichuan province, China were immediately
affected by the 2008 earthquake, offsetting some gains in forest cover observed since the enactment of the conservation programs.
But without the enactment of these conservation programs, the combined effects of human disturbance and earthquake-induced
landslides could have severely reduced the region’s forest cover. The continuation—and enhancement—of incentives for participation
in conservation programs will be important for reducing the environmental impacts of the combined effects of human disturbance
and natural hazards not only in the study area but also in many disaster-prone regions around the world. 相似文献
23.
Goel A McConnell LL Torrents A 《Journal of environmental science and health. Part. B》2007,42(4):343-349
Sub-cooled liquid vapor pressures (P(L)(0)) of current-use organochlorine and organophosphate pesticides (chlorothalonil, chlorpyrifos methyl, diazinon, fipronil) and selected transformation products (chlorpyrifos oxon, heptachlor epoxide, oxychlordane, 3,5,6-trichloro-2-pyridinol) were determined at multiple temperatures using the gas chromatography retention time technique. Results were utilized to determine vapor pressure-temperature relationships and to calculate enthalpies of vaporization (DeltaH(vap)). While results for chlorothalonil and diazinon were comparable with published values, the measured value for fipronil (1.82 x 10(-6) Pa) is almost an order of magnitude higher than the reported literature value (3.7 x 10(-7) Pa). The availability of vapor pressure temperature relationships for these chemicals will aid in pesticide risk assessment development and improve the effectiveness of mitigation and remediation efforts. 相似文献
24.
25.
26.
Nancy E Bockstael Kenneth E McConnell 《Journal of Environmental Economics and Management》1981,8(3):199-214
The household production function is an intuitively appealing way to model man's interaction with nature. This paper models the interaction between the household's behavior and publicly provided inputs into wildlife recreation. The paper shows how to compute benefits, assuming that the household production function is known. The household production function approach collapses to the simple travel cost approach when households are unable to substitute their own inputs for publicly provided inputs. In addition, the paper demonstrates the conditions under which the parameters of cost and preference functions can be identified. The conditions for identification are quite restrictive when several choices are endogenous. 相似文献
27.
Duncan McConnell 《Die Naturwissenschaften》1965,52(8):183-183
28.
Economists have viewed the presence of externalities and other market failures as leading to a private equilibrium that would not be Pareto optimal. In the exploitation of common-pool resources, especially biological resources, this would lead to the much-discussed 'tragedy of the commons'. A challenge to this traditional view has emerged from a careful study of the theory and practice of the exploitation of common-pool resources. The existence of a social norm may provide an individual with information on the extent of external costs associated with a behavior, and thus provides an imperfect means of internalizing the external costs. In this paper we propose an evolutionary model of compliance that allows for the existence of a social norm. The impact of the social norm on public policy towards externalities is examined. 相似文献
29.
A Review of WTA/WTP Studies 总被引:7,自引:0,他引:7
John K. Horowitz Kenneth E. McConnell 《Journal of Environmental Economics and Management》2002,44(3):426
Willingness to accept (WTA) is usually substantially higher than willingness to pay (WTP). These constructs have been studied for roughly 30 years and with a wide variety of goods. This paper reviews those studies. We find that the less the good is like an “ordinary market good,” the higher is the ratio. The ratio is highest for non-market goods, next highest for ordinary private goods, and lowest for experiments involving forms of money. A generalization of this pattern holds even when we account for differences in survey design: ordinary goods have lower ratios than non-ordinary ones. We also find that ratios in real experiments are not significantly different from hypothetical experiments and that incentive-compatible elicitation yields higher ratios. 相似文献
30.
To supplement an epidemiological investigation into respiratory cancer, a synthetic fabric called tak was used to study the deposition of atmospheric metal pollution within the town of Armadale, central Scotland. Pollution maps showed high concentrations of several metals in areas close to the town's steel foundry and in a second area in the north of the town. Through further statistical analyses, those metals were identified which had probably been emitted by the foundry, and temporal variations in metal deposition patterns were examined. The advantages of this method of low technology sampling, which include the low cost and a high density of sampling sites, are described. 相似文献