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131.
采用国家二级标准(0.15mg.m^-3)作为南方中小城市的环境标准值,硫品位标准应控制在1.32%以下。对比南方各中小城市1987年使用的煤硫品位,在98个城市中,有44个城市符合标准,另有54个城市应控制高硫煤使用量或应用脱硫技术,以减少大气中SO2浓度。 相似文献
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城镇生活垃圾优化处理技术研究 总被引:2,自引:0,他引:2
简述了生活垃圾处理技术现状,提出了生活垃圾优化处理技术方案,并与现行技术进行了对比。工程实例表明该技术处理效果好,值得推广。 相似文献
134.
Resource-based cities (RBC) have made momentous contributions to urbanization in China. However, as natural resources are exhausted, RBC are facing an enormous challenge. In this paper we put forward a resource-based city sustainability index (RCSI) and a resource-based city coordination index (RCCI), including environmental, social, and economic dimensions, adopted three weight scenarios, and selected 13 cities for study. The results: (a) help locate the problems by analyzing both dimensions and indicators; (b) simulate the trends of how RBC emerged, grew, declined, and regenerated; (c) categorize RBC into four types by integrating RCSI and RCCI; (d) give policy makers a holistic and comprehensive perspective in the future urban regulation and management; and (e) highlight a road to sustainability. 相似文献
135.
Annica Kronsell 《Local Environment》2013,18(8):965-982
Cities are crucial to mitigating climate change and can serve as sites for innovations, providing examples of ways to conduct effective politics in transport, energy and land-use. What does it take to become a model for climate politics? This article argues that a few innovative measures will not suffice. A common vision based on broad legitimacy is crucial to achieving this position. Using a theoretical framework on input and output legitimacy with the City of Freiburg as the case, this article explores the political dimensions of the climate innovative city. The study shows that a specific kind of “green conservative” politics and a consensual view on climate issues across parties have been very important to creating political legitimacy. This has been supported by extraordinary and extensive citizen engagement in combination with the actual output, i.e. what environmental policies have delivered. The legitimacy for the Green City model also means that Freiburg is viewed as a highly livable city, in turn, creating self-enforcing dynamics that challenge its innovative potential. 相似文献
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资源型城市系统能否形成新的、有序的耗散结构主要依赖于系统中的随机涨落,而这种随机涨落的产生是由各种触发和激化因子决定的.分析了资源型城市系统演化过程中的内源激化因子和外源触发因子,探讨了它们之间的协同动力机制,找出了资源型城市系统演化的序参量是科技进步水平、政府宏观调控和国家对资源型城市的投资. 相似文献
138.
我国西部中小城镇防震减灾管理体系研究 总被引:2,自引:1,他引:1
分析了我国西部中小城镇防震减灾管理现状,借鉴发达国家防震减灾管理的经验,构建了西部中小城镇防震减灾管理体系,包括防震减灾法律保障、行政监管、地震监测预报和预警、防震减灾计划、建筑物和生命线工程的抗震性能保证、防震减灾教育与培训、基层单位对震灾的预防、地震救援组织建设、震灾应急救援服务等彼此关联、相互作用的子系统。指出其建设重点应放在建筑物和生命线工程抗震性能保证、行政监管、防震减灾计划、防震教育培训和基层震灾预防等方面。提出了深化西部中小城镇建设管理体制改革、提高防震减灾社会管理与公共服务水平、加强地震灾害应急救援体系建设等对策和建议。研究成果的运用将有助于增强西部中小城镇的防震减灾管理能力。 相似文献
139.
Myrna H.P. Hall 《Ecological modelling》2011,223(1):20-31
Rust belt cities of the northeastern United States are plagued by flat or declining economies and the accompanying social fallout from lack of employment. Advocates of green fuels, green infrastructure and green jobs have proposed these nature-based technologies as means to revitalize the economies of cities. Before making public and private investment a baseline analysis of the relative magnitude of existing energy production and energy respiration at the neighborhood scale is useful in order to understand what the potential for green infrastructure might be. Because the urban canopy and other green infrastructure can enhance urban socio-ecological metabolism, we measured the flows of natural energy produced (P) by the urban forest versus the industrial or fossil energy currently consumed or respired (R) in three economically and demographically distinct neighborhoods of a typical rust-belt city, Syracuse, NY. Our objectives were to (1) understand the potential for green energy to replace fossil fuels in general, (2) assess the degree to which different socio-demographic communities are receiving the ecosystem benefits of existing urban “green” infrastructure (i.e. forest primary production), and (3) identify where local (in-city) biotic energy resources could be enhanced or fossil fuel consumption altered to improve overall urban socio-ecological metabolism. We found that (1) the fossil energy consumed in all three neighborhoods was 200-700 times higher than the biotic “green” energy produced; (2) that to produce this much energy from willow biomass grown in the region would require at least between 0.3 and 0.7 ha of bio-energy production per person depending on affluence, density of living, transportation mix and home fuel mix; (3) that although the more affluent neighborhood used, per residence and per person, almost twice as much energy as that of the downtown more densely settled and poorer neighborhood, its R:P ratio was still the lowest due to the high primary productivity of its neighborhood tree canopy. As a first assessment our findings identify several opportunities for enhancement of the socio-ecological metabolism of these neighborhoods, and the city at large, through conversion of heating units in poorer neighborhoods away from expensive electricity, and toward tree planting, solar installations, and per capita energy use reductions. 相似文献
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