首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   108篇
  免费   1篇
安全科学   2篇
废物处理   1篇
环保管理   53篇
综合类   6篇
基础理论   30篇
环境理论   1篇
污染及防治   12篇
评价与监测   1篇
社会与环境   1篇
灾害及防治   2篇
  2022年   2篇
  2020年   1篇
  2019年   1篇
  2017年   2篇
  2016年   2篇
  2015年   3篇
  2014年   1篇
  2013年   6篇
  2012年   4篇
  2011年   3篇
  2009年   2篇
  2008年   5篇
  2007年   5篇
  2006年   2篇
  2005年   4篇
  2004年   2篇
  2003年   3篇
  2002年   2篇
  2001年   1篇
  2000年   1篇
  1999年   2篇
  1998年   3篇
  1997年   1篇
  1996年   2篇
  1995年   2篇
  1994年   4篇
  1993年   3篇
  1992年   4篇
  1991年   2篇
  1990年   1篇
  1988年   4篇
  1987年   1篇
  1986年   2篇
  1985年   4篇
  1984年   2篇
  1983年   3篇
  1982年   2篇
  1980年   1篇
  1979年   1篇
  1978年   3篇
  1977年   3篇
  1976年   2篇
  1974年   1篇
  1973年   2篇
  1972年   2篇
排序方式: 共有109条查询结果,搜索用时 281 毫秒
101.
Book reviews     
Traffic Mix Model

(TRRU Research Report No. 30).

A Methodology for Estimating Recreation Traffic Flows.

August 1977, University of Edinburgh. 144 pps.

“Recreation in the Highlands and Islands”

Tourism and Recreation Research Unit, University of Edinburgh, December 1976.

Research Report No. 22, 411pp with tables and diagrame; Research Report No. 31, 145 with tables and diagrams.

Tourism and Recreation in the Chichester Area: a basis for planning

Tourism and Recreation Research Unit, Research Report No. 35, University of Edinburgh.

The Real Wealth of Nations

S. R. Eyre

Arnold, London, 1978. £7.95.

Landscape Construction

M. F. Downing

E. & F. N. Spon, London, 1977

Planning and Organizing for Social Change. Action Principles from Social Science Research.

Jack Rothman

Columbia University Press. 628 p.p.

Models and Cities and Regions

A. G. Wilson, P. H. Rees, C. M. Leigh (editors) 1977

Wiley, £12.75.

Ecology and Ekistics

C. A. Doxiadis Edited by Gerald Dix

Paul Elek, London 1977. Environmental Studies Series. 91 p.p. Paperback. £3.75.

Tackling Urban Deprivation : The Contribution of Area‐Based Management

T. Mason, K. Spencer, C. Vielba and B. Webster

Institute of Local Government Studies, University of Birmingham, Dec. 1977. 93p.p. No price stated.

Marketing Geography : with special reference to retailing

R. L. Davies

Methuen, 1976. £3.45.

“Public Participation in Planning”

Edited by W. R. D. Sewell and J. T. Coppock

J. Wiley & Sons Ltd., Chichester, 1977. 208 p.p. £9.00.

“The Individual Citizen and Public Participation”

William Hampton and Raymond Walker

Linked Research Project into Structure Planning, Interim Research Paper. 13, 1978. 24 p.p. £1.00.

A Future for Planning Science Fiction Cities

Town Planning discussion paper No. 27. Stephen Wood

U.C.L. 1977.

“The Bicycle Planning Book “

Mike Hudson (editor)

Open Books Publishing Ltd. and Friends of the Earth, 1978. Paperback, £1.95.

Residential Location and Urban Housing Markets

G. K. Ingram (1977) (ed.)

Cambridge, Mass : Ballinger Publishing Co., for the National Bureau of Economic Research.  相似文献   

102.
A model food chain, utilizing 65Zn-labeled and nonlabeled food organisms, was used to measure the relative contributions of food and water to Zn accumulation by Gambusia affinis and Leiostomus xanthurus. Chlamydomonas sp. was fed to Artemia sp. which in turn was fed to G. affinis and L. xanthurus. A trace metal-chelate buffer system was used to maintain a stable free Zn ion activity (10-8.5 mol l-1) in the experimental seawater. Food represented 78 to 82% of total accumulation of 65Zn by the fish. Thus, food cannot be ignored in assessing the accumulation and toxicity of trace metals.  相似文献   
103.
The paper describes a contingent valuation study of the benefits and costs of the Wildlife Enhancement Scheme (WES) (English Nature) on the Pevensey Levels Site of Special Scientific Interest in East Sussex, England. Using a conventional mean WTP value as the appropriate measure of benefits gave a benefit/cost (B/C) ratio of 0.497 for user value and 1.994 for user plus non-user values (households within 60 km of the site) for expenditure under WES. If a more rigorous and conservative truncated mean value was employed, then B/C ratios fell to 0.117 for user values and 0.758 for user plus non-user values. However, assuming the same level of passive use values are held by a similar proportion of all non-visiting households in the UK as observed in the sample survey, this would produce a B/C ratio for truncated mean user plus non-user benefits of 18.26. Even if the addition of further WES sites across the country led to a steep decline in mean marginal non-user WTP for the scheme in the Levels, the B/C ratio would still greatly exceed 1.0.  相似文献   
104.
Book reviews     
What Time is This Place?

Kevin Lynch

The MIT Press, Cambridge and London, England 1972, VIII and 277 pp, $5.95.

Planning and Profit in the Urban Economy

T. A. Broadbent (1977)

London: Methuen & Co.

"Sociology in Planning: a redefinition"

G. McDougall, J. Foulsham and J. Porter.

S.I.P. Paper No. 3, 1977, 27pp. Price 50p. Published by the organisation of Sociologists in Polytechnics and Cognate Institutions.

"Urban Freight Transport: problems and some possible solutions"

Alan R. Boyland

Working Papjer No. 26, Oxford Polytechnic Department of Town Planning.

A Critique of Urban Modelling

R. A. Sayer

Progress in Planning Series, edited by D. Diamond and J. B. McLoughlin, Volume 6, Part 3.

The Communications Factor in Office Decentralisation

J. B. Goddard and D. Morris

Progress in Planning Series edited by D. Diamond and J. M. McLoughlin, Vol. 6, Part 1.

Spatial Population Analysis

P. H. Rees and A. G. Wilson

Arnold, London, 1977. £27.50.

The Design Guidance Survey

Llewelyn‐Davies, Weeks, Forestier‐Walker and Bor. London 1976.  相似文献   

105.
Environmental Chemistry Letters - The outbreak of the human coronavirus disease 2019 (COVID-19) has induced an unprecedented increase in the use of several old and repurposed therapeutic...  相似文献   
106.
Many mammals save energy during food shortage or harsh weather using controlled reductions in body temperature and metabolism called torpor. However, torpor slows offspring growth, and reproductive individuals are thought to avoid using it because of reduced fitness resulting from delayed offspring development. We tested this hypothesis by investigating torpor during reproduction in hoary bats (Lasiurus cinereus, Vespertilionidae) in southern Canada. We recorded deep, prolonged torpor bouts, which meet the definition for hibernation, by pregnant females. Prolonged torpor occurred during spring storms. When conditions improved females aroused and gave birth within several days. Our observations imply a fitness advantage of torpor in addition to energy conservation because reduced foetal growth rate could delay parturition until conditions are more favourable for lactation and neonatal survival.  相似文献   
107.
This article sets out to evaluate the range of meanings and preferences for the concepts of adaptation, resilience, mitigation and coping of a variety of professionals in New York who are undertaking leadership positions in developing climate change policies and practices. This article positions a normative set of simplified meanings for each of the aforementioned concepts based on a review of existing literature. Utilizing a survey, these normative meanings are evaluated by and between the: (a) concepts and meanings; (b) concepts and applications and (c) applications and preferences, as applied to various risk-based scenarios ranging from sea-level rise to heat waves. This survey tests the hypotheses that the respondents: (i) are unable to consistently match the concept of resiliency with the normative meanings or applications: and (ii) will not consistently show a preference for resilience applications or outcomes ahead of other concepts. The results of the survey confirm both hypotheses, which is demonstrative of the inadequacy of the current framework dominated by a narrowly defined framework for resilience. It is anticipated that the results of this article will advance an argument for the necessity to develop consistent meanings for concepts which bridge the scientific, policy and popular domains.  相似文献   
108.
With the intent of improving agricultural revenues and solidifying her place as an ecotourism destination, it has been proposed that the island nation of The Commonwealth of Dominica convert all agriculture to organic production. This study explores Dominica’s current and potential domestic demand for organic and/or “locally grown” produce. Surveys were conducted with Dominican consumers to assess their opinions and willingness to pay for these products, and evaluated using a maximum likelihood estimation procedure. On average, Dominican consumers are willing to pay 17.5 % more for organic, and 12 % more for locally grown, produce. These results were varied significantly across demographic segments of the sampled population, respondent tastes and preferences, the health status of their family, and the extent to which they were early adopters of new products. Despite several expected challenges of a successful transition to organic, implementation of this policy may offer a net positive welfare increase for Dominica’s permanent residents. Results from this analysis suggest that, from the perspective of domestic consumers, Dominica should continue to pursue the possibility of becoming an “Organic Island.”  相似文献   
109.
Environmental Science and Pollution Research - Oil spills are a significant stressor to coastal and maritime environments worldwide. The growth responses of Batis maritima and Avicennia germinans...  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号