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81.
    
In Australia, the debate has intensified with respect to the continued logging of old-growth forests and export of woodchips. This has developed into antagonism between conservationist groups on one side, and a coalition of trade unions and business enterprises on the other. Much of the antagonism has been played out in the political arena around the issue of ‘resource security’ legislation. The specific legislation was defeated in 1992, but it is argued herein that this has not and will not conclude an on-going debate around similar issues. The material consequences of economic recession have provided an interdependency between agents of the working class and capital to exploit native forests for the full value of the existing timber. This coalition of interests is having an effect not only on political discourse and policy determination but even the valuation of forest ecology itself. This paper examines the economic, technical and ethical parameters of that debate and concludes that the material interests of labour and capital will be pertinent to long-term outcomes. The first man who, having enclosed a piece of land, thought of saying ‘this is mine’ and found people simple enough to believe him, was the real founder of civil society. How many crimes, wars, murders; how much misery and horror the human race would have been spared if someone had pulled up the stakes and filled in the ditch and cried out to his fellow men: Beware of listening to this imposter. You are lost if you forget that the fruits of the earth belong to everyone and that the earth itself belongs to no onel (Rousseau 1984; p. 109).  相似文献   
82.
83.
What is the significance of the wicked problems framework for environmental philosophy? In response to wicked problems, environmental scientists are starting to welcome the participation of social scientists, humanists, and the creative arts. We argue that the need for interdisciplinary approaches to wicked problems opens up a number of tasks that environmental philosophers have every right to undertake. The first task is for philosophers to explore new and promising ways of initiating philosophical research through conducting collaborative learning processes on environmental issues. The second task is for philosophers to recognize the value of philosophical skills in their engagements with members of other disciplines and walks of life in addressing wicked problems. The wicked problems framework should be seen as an important guide for facilitating philosophical research that is of relevance to problems like climate change and sustainable agriculture.  相似文献   
84.
ABSTRACT. This paper outlines an approach to planning the management of a lake heavily used for recreation and of substantial importance to the tourist economy of Northeastern Wisconsin. A framework, utilizing a three dimensional matrix, is developed to analyze levels of public concern, management alternatives and action agencies. Structural and non-structural alternatives are examined and evaluated on the basis of social and economic criteria, long- and short-term environmental impact and legal-political feasibility. Data requirements which created the necessity for an interdisciplinary approach involving social, physical, and biological sciences are enumerated. The authors examine the role of universities in assisting communities with resource management planning and detail the attributes of academic institutions which desire to successfully attack resource planning problems.  相似文献   
85.
    
Managed forests are increasingly being used for recreation. As a result, foresters may be expected to tailor silvicultural treatments to accommodate specific recreation preferences. To better understand changes in hiking and camping quality in the years following a harvest, six sites on the Oregon State University's research forest were evaluated annually for 11 years. Multiple comparison and regression analyses were used to describe the data. Results show that recreation ratings generally improved over time; recreation ratings were related to but different from scenic ratings; and there were differences among recreation activities. Although several studies have previously examined recreation quality after harvest, we know of no other study that has tracked the ratings of individual harvest units through the early stages of stand regeneration.  相似文献   
86.
    
ABSTRACT: A free water surface (FWS) constructed wetland was installed at a dairy in Glendale, Arizona, to study the potential of such a wetland to remove nitrogen (N) from wastewater. The study objectives were: (1) to determine N removal from the wastewater, and (2) to evaluate N accumulation in soil and plant tissues. The system consisted of eight cells (70 × 9 × 1.5 m) planted with Typha domingensis, Scirpus validus, and Phragmites australis. The four cells in series were lined with plastic, and the four cells in a parallel series were lined with clay. Cells received approximately 180 m3/d of partially treated dairy effluent. Plant tissues and soil samples were collected above and below ground from 24 locations during one year. Total N removal from wastewater was about 17 percent. Clay‐lined cells accumulated more N in the soil and less N in plant biomass compared with plastic lined cells. Plant biomass accounted for approximately 60 percent of total N accumulated in cells with dense plant communities. Ninety percent of accumulated soil N was organic. Total N accumulated in soil reached a maximum (1,100 mg/kg) eight months after the introduction of wastewater.  相似文献   
87.
In recent years AT&T changed its focus on environmental policies from compliance to pollution prevention. Pollution prevention is an integrated program that includes design for the environment, “green” manufacturing, and a comprehensive program to reduce existing waste in production. The principles of Total Quality Management can be applied to pollution prevention as well as the more traditional manufacturing concepts. The project described in this article is one of several concurrent programs being conducted at AT&T'S Columbus Works to reduce overall waste produced by the facility by applying TQM practices.  相似文献   
88.
Healthy watersheds provide valuable services to society, including the supply and purification of fresh water. Because these natural ecosystem services lie outside the traditional domain of commercial markets, they are undervalued and underprotected. With population and development pressures leading to the rapid modification of watershed lands, valuable hydrological services are being lost, which poses risks to the quality and cost of drinking water and the reliability of water supplies. Increasing the scale and scope of programmes to protect hydrological services requires policies that harmonize land uses in watersheds with the provision of these important natural services. This article summarizes key attributes of hydrological services and their economic benefits; presents a spectrum of institutional mechanisms for safeguarding those services; discusses programmes in Quito (Ecuador), Costa Rica and New York City; and offers some lessons learned and recommendations for achieving higher levels of watershed protection.  相似文献   
89.
The effects of maize (Zea mays L.), genetically modified to express the Cry1Ab protein (Bt), and an insecticide on soil microbial and faunal communities were assessed in a glasshouse experiment. Soil for the experiment was taken from field sites where the same maize cultivars were grown to allow comparison between results under glasshouse conditions with those from field trials. Plants were grown in contrasting sandy loam and clay loam soils, half were sprayed with a pyrethroid insecticide (deltamethrin) and soil samples taken at the five-leaf stage, flowering, and maturity. The main effect on all measured parameters was that of soil type and there were no effects of Bt trait or insecticide on plant growth. The Bt trait resulted in more soil nematodes and protozoa (amoebae), whereas insecticide application increased plant Bt concentration and altered nematode community structure. The only significant effects on soil microbial community structure, microarthropods, and larvae of a nontarget root-feeding Dipteran, were due to soil type and plant growth stage. The results indicate that, although there were statistically significant effects of the Bt trait on soil populations, they were small. The relative magnitude of the effect could best be judged by comparison with the insecticide treatment, which was representative of current best practice. The Bt trait had no greater effect than the insecticide treatment. Results from this glasshouse experiment were in broad agreement with conclusions from field experiments using the same plant material grown in the same soils.  相似文献   
90.
    
The Economics of Art and Culture: An American Perspective

James Heilbrun & Charles M. Gray

New York, Cambridge University Press, 1993, 378 pp., £14.95 pb

Building Cities that Work

Edmund Fowler

Montreal & Kingston, McGill‐Queen's University Press, 1992, 315 pp.

Interactive Decision Making: The Graph Model for Conflict Resolution

Liping Fang, Keith W. Hipel & D. Marc Kilgour

New York, Wiley, 1993, 221 pp., £49.50

The Politics of Nature: Explorations in Green Political Theory

Andrew Dobson & Paul Lucardie (Eds)

London, Routledge, 1993, 240 pp. + xv, £37.50

Urban Transport in Asia: An Operational Agenda for the 1990s, World Bank

Technical Paper No. 224

Peter Midgley

Washington, DC, The World Bank, 1994, 98 pp.

Landscape Ecology: Theory and Application, 2nd edition

Zev Naveh & Arthur Lieberman

New York, Springer‐Verlag, £34.50  相似文献   

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