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811.
洛阳市城市生活垃圾成份分析 总被引:3,自引:0,他引:3
对洛阳市城市生活垃圾按季节进行了分类,分析了垃圾中碳、硫、挥发分、灰分及水分的含量,测定了垃圾发热量及部分化学元素的含量,为城市生活垃圾的处理提供了科学数据。 相似文献
812.
应用GM(1,1)模型,对大同市各功能区环境噪声进行综合预测,得出了大同市未来几年城市噪声的变化趋势。 相似文献
813.
城市人为灾害灾变动力机制在认识上有两个层次:表征机制和内在机制。本文以研究内在机制为目标,阐明城市复合生态位位势、城市界面论、城市奇异吸引源、城市增熵等4个方面的人为灾害灾变动力机制,并指出了这些研究结论的意义。 相似文献
814.
Alan Richardson 《Journal of Environmental Planning and Management》1985,28(2):60-65
Traditional economic planning policies do not, largely, benefit residents of run‐down inner city neighbourhoods. Planners have therefore begun to look at other ways to improve the economic well‐being of unemployed people in such areas. One such initiative has been the location of Community Employment Development Officers in economically depressed areas by Cleveland County Council — one of Britain's unemployment blackspots. Their remit is to encourage and initiate action to create jobs and this paper looks at the experiment, drawing out some of the lessons. 相似文献
815.
A. Graham Tipple Nick Wilkinson Magdi Nour 《Journal of Environmental Planning and Management》1986,29(1):39-46
Self‐help extensions to government‐built housing are now accepted as a valuable addition to the housing stock in many third world countries. This paper describes self‐help extensions being made to five‐storey walk‐up flats in Helwan, Egypt, to provide more living space for households which have grown too large for the two rooms initially provided. It is argued that the cooperative effort and standard of construction are resulting in an acceptable new environment. Government response should be to encourage and guide such extensions wherever they occur. 相似文献
816.
The concern of this paper is a review of the urban environmental degradation and the current approach by the military (environmental task force) in solving the problem. It is based on the experience of a few states in Nigeria. The paper proposes a comprehensive urban planning approach which should be integrated with an awareness campaign. 相似文献
817.
Hugh Clout 《Journal of Environmental Planning and Management》1987,30(2):70-78
Serious social and environmental problems are encountered on many of the large post‐war estates of blocks of social housing (grands ensembles) surrounding French cities, as well as in many inner‐city districts. In 1981 the new Socialist administration set up a National Commission to foster grass‐roots schemes in order to improve housing and to attempt to tackle both the expressions and the causes of social problems. The resulting neighbourhood programme represents an innovative dialogue between the central State, the regions, local authorities and residents’ groups. Examination of a sample of projects from the provinces (Romans, Dreux, Les Minguettes) and the Paris region confirms that progress has been made by improving housing, open spaces and community facilities. Formidable problems of poverty, unemployment and racism remain on many estates. 相似文献
818.
A newly installed combined detention/wetland stormwater treatment facility upstream from Lake McCarrons, Roseville, Minnesota,
was monitored for 21 months to evaluate its effectiveness and the response of the lake to decreased phosphorus loads. The
treatment facility consists of a 1.0-ha detention pond that discharges into a series of six constructed wetland “chambers.”
Data from snowmelt and rainfall events are presented for several pollutants. Results show good reductions for most pollutants.
Discussion on the facets of the system's operation are presented. Data from the lake show very little change in its water
quality from three years prior to restoration (1984–1986) to three years following restoration (1987–1989): the lake's phosphorus
and chlorophyll has actually increased. 相似文献
819.
The EPA Storm Water Management Model was used to model the effects of urban and agricultural development on storm water runoff from uplands bordering a Louisiana swamp forest. Using this model, we examined the effects of changing land use patterns. By 1995 it is projected that urban land on the uplands bordering the swamp will increase by 321 percent, primarily at the expense of land currently in agriculture. Simulation results indicate that urbanization will cause storm water runoff rates to be up to 4.2 times greater in 1995 than in 1975. Nutrient runoff will increase 28 percent for nitrogen (N) and 16 percent for phosphorus (P) during the same period. The environmental effects of these changes in the receiving swamp forest are examined. 相似文献
820.
Dagmar Haase 《Ambio》2021,50(9):1644
Urbanization brings benefits and burdens to both humans and nature. Cities are key systems for integrated social-ecological research and the interdisciplinary journal of Ambio has published ground-breaking contributions in this field. This reflection piece identifies and discusses integration of the human and natural spheres in urban social-ecological research using the following foundational papers as important milestones: Folke et al. (1997), Ernstson et al. (2010) and Andersson et al. (2014). These papers each take unique approaches that aim to uncover core properties—processes, structures, and actors—of urban systems and set them into mutual relationship. This piece will end with a forward-looking vision for the coming 50 years of urban sustainability and resilience study in Ambio. 相似文献