全文获取类型
收费全文 | 359篇 |
免费 | 5篇 |
国内免费 | 9篇 |
专业分类
安全科学 | 25篇 |
废物处理 | 4篇 |
环保管理 | 123篇 |
综合类 | 148篇 |
基础理论 | 12篇 |
污染及防治 | 21篇 |
评价与监测 | 23篇 |
社会与环境 | 15篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 2篇 |
2022年 | 9篇 |
2021年 | 9篇 |
2020年 | 13篇 |
2019年 | 3篇 |
2018年 | 5篇 |
2017年 | 6篇 |
2016年 | 8篇 |
2015年 | 10篇 |
2014年 | 22篇 |
2013年 | 18篇 |
2012年 | 22篇 |
2011年 | 27篇 |
2010年 | 6篇 |
2009年 | 30篇 |
2008年 | 24篇 |
2007年 | 30篇 |
2006年 | 19篇 |
2005年 | 11篇 |
2004年 | 8篇 |
2003年 | 9篇 |
2002年 | 8篇 |
2001年 | 8篇 |
2000年 | 11篇 |
1999年 | 5篇 |
1998年 | 8篇 |
1997年 | 6篇 |
1996年 | 7篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 1篇 |
1990年 | 2篇 |
1987年 | 6篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1982年 | 1篇 |
排序方式: 共有373条查询结果,搜索用时 15 毫秒
331.
This paper summarises the methodology and results of work involved in the investigation of energy demand in six Chinese villages included in the SUCCESS Project. The procedures used to collect data associated with local energy demand are explained and the approach to data analysis is explained. Results are provided in terms for delivered energy consumption, as an indicator of energy demand; primary energy consumption, as an indicator of energy resource depletion; and carbon dioxide emissions, as an indicator of global climate change. Similarities and differences between results for this sample of villages are considered. The important causes of differences in results are investigated. 相似文献
332.
333.
K. G. Willis Lesley A. R. Mitchell J. F. Benson 《Journal of Environmental Planning and Management》1986,29(2):57-63
The paper analyses the costs and benefits of conserving wildlife and reports part of a wider research project which aims to estimate the benefits of certain ecological types and habitats, and to compare the outcome of different techniques used to value wildlife. The authors outline a range of philosophical, technical and methodological problems in deriving cardinal measures of costs and benefits. 相似文献
334.
Bradley M. Crowder C. Edwin. Young 《Journal of the American Water Resources Association》1987,23(5):897-902
ABSTRACT: This paper is a computer simulation analysis of an agricultural nonpoint pollution problem. Computer modeling is a universally applicable tool that can be used for establishing the linkages between and the quality of agricultural runoff in both surface and subsurface flow. The tradeoffs between the costs of soil conservation practices and water quality are reported, and the economic implications of such tradeoffs are discussed. Soil and nutrient losses resulting from crop production practices are analyzed using a field-scale computer simulation model (CREAMS). No-till planting, reduced tillage, and sod waterway systems are more cost effective than other practices for controlling soil and nutrient runoff losses. Nitrate leaching losses are increased slightly by most soil conservation practices. Terrace systems and permanent vegetative cover impose the greatest societal cost for water quality protection. Public cost sharing and tax incentives encourage farmers to adopt expensive structural practices, and policies are needed to get cost-effective practices implemented on critical acreage. Extensive treatment of land is necessary for agricultural best management practices (BMPs) to significantly improve water quality in areas that are intensively farmed. 相似文献
335.
Mark Shucksmith 《Journal of Environmental Planning and Management》1985,28(2):70-73
This paper is a revised version of one presented to the Regional Science Association Conference, University of Leeds, September 1983.
The extent of rural poverty is largely hidden, yet mean rural incomes are lower than in urban areas. Equally, the differential between low incomes and high minimum house prices in rural areas not always acknowledged. This paper looks at the planning response to these problems against alternative approaches including discriminatory policies against second home owners in rural areas. The paper concludes by identifying a solution restricting private development and augmenting public‐sector provision in rural areas. 相似文献
336.
Robert Schware 《Environmental management》1984,8(1):55-65
Flood warning systems offer a large potential for reducing human losses and property damage in flood-prone regions. This article illustrates why official organized systems should not be relied on completely in either developing or developed societies. It then discusses an indigenous flood warning system in a rural area of Eastern India, its value, and its importance in providing an alternative means of detecting, interpreting, and relaying flood warning information to the ultimate users of this information, i.e., those populations most at risk from floods.The National Center for Atmospheric Research is operated by the University Corporation for Atmospheric Research and is sponsored by the National Science Foundation. 相似文献
337.
《Journal of Environmental Planning and Management》1984,27(1):23-26
The Planning Inquiry is used in Britain as a vehicle for resolving conflicts between energy developments and land use in areas of high ecological or amenity value. This is a report of one such inquiry; the Lyndhurst Inquiry which has been regarded as a test case of establishing oil and gas reserves against the importance of environmentally sensitive areas. The ultimate decision is seen as indicative of the complexity of issues involved. 相似文献
338.
通过对18个乡镇的调查研究和现场采样分析,评价了乡镇工业的发展对农村环境影响的程度和范围,并对乡镇工业的发展方向和保护农村环境提出 了建议和保护措施。 相似文献
339.
S. I. Efe 《The Environmentalist》2006,26(3):175-181
This paper assess the level of potability of rainwater samples harvested from catchments roofs in 6 rural communities of Delta
State, Nigeria to achieve this goal a stratified sampling technique was adopted in the establishment of 90 sterilized cans
into the 3 senatorial districts of Delta; on the basis of one can for thatch, aluminium, asbestos and corrugated iron sheets,
and open surfaces. Six rural communities each were chosen from the three senatorial districts, making a total of 18 rural
communities that were chosen for the study. The harvested rainwater samples were analysed with the most appropriate equipment
and analytical techniques as recommended by World Health Organisation (WHO) and federal ministry of environment in Nigeria.
Kruskal—wallis H’test statistical techniques was employed to ascertain whether differences exist amongst the rainwater samples
collected from thatch, aluminium, asbestos and corrugated iron roofing sheets, and open surfaces. The result revealed that
most of physiochemical and biological characteristics of rainwater samples were generally below the WHO threshold, as such
the rainwater characteristics showed satisfactory concentration in these rural communities. Thus, the rainwater from these
rural communities should be harvested, stored for human consumption and for other uses by the inhabitants. But treatment is
needed in terms of their pH, TSS, Fe and colour. Similarly, significant differences exist amongst the rainwater samples collected
from the 5 roofing types, most especially low quality of rainwater were observed in thatch and asbestos roofing sheets. Thus,
rainwater from these sources should be purified before consumption. 相似文献
340.