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城市屋顶绿化生态功能浅析 总被引:1,自引:1,他引:0
屋顶绿化具有多种优越的环境功能,是一项能够有效提升城市生态水平的环境策略,现已被世界上很多发达国家所采用。本文介绍了屋顶绿化的一些基本知识,并对屋顶绿化的环境功能进行了讨论。 相似文献
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作者是一名下岗职工,但对环保有着满腔热情。经过多年摸索、试验,作者研究出一套生态住宅设计理念。作者这种刘环保的执着追求和热爱值得大家学习和尊敬。本刊遴选此文供大家参考,如有对此文涉及的屋顶绿化理念感兴趣者可与作者联系、商讨。 相似文献
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本年度国家环境经济政策进展评估报告采用实地调研法和政策分析法,对2020年我国环境经济政策进展进行了系统评估,总体结论认为环境经济政策在污染防治攻坚战和生态环境质量改善中发挥了积极作用,有效支撑服务了高质量发展。绿色财政、环境资源价格、绿色税收、生态补偿、绿色金融等政策推进取得了积极进展,但是环境经济政策体系仍不够完善,服务于生态文明建设的环境经济政策仍然存在结构性短缺,需要积极推进环保投融资、生态补偿等环境经济政策的创新运用,着力构建支撑高质量发展和高水平生态环境保护的长效机制。 相似文献
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浅谈高速公路的生态绿化 总被引:7,自引:0,他引:7
文章针对当前我国高速公路建设中的绿化要求,引入高速公路生态绿化的概念。通过对高速公路建设中生态恢复和景观绿化两大内容的分析,提出了高速公路生态绿化的要点。 相似文献
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内江供电局在创建文明楼院活动中,大搞环境绿化,成绩显著. 这个局根据办公地点和宿舍均是多层楼房,不适宜搞平面绿化的实际,提出了“因地制宜,见缝插针,立体绿化,环境创优”的口号,积极创造条件美化环境。目前,已建起一座屋顶苗圃,办公大楼邻 相似文献
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国家环境经济政策研究与试点项目技术组 《中国环境管理》2018,10(2):14-18
环境经济政策是生态文明建设的重要组成部分,是实现绿色发展的核心政策之一,创新运用环境经济政策受到高度重视。经过多年的探索发展,我国已经基本建立了自上而下与自下而上相结合的环境经济政策体系。为了更好地为有关决策和政策制定提供定量化信息,提高政策设计和决策的科学性,本文采取实地调研法和政策分析方法,对2017年度我国重点环境经济政策的年度进展进行了系统评估,并指出了下一步环境经济政策改革需要解决的关键问题。总体上看,2017年是环境经济政策建设取得重要进展的一年,环境税费、生态补偿、绿色金融等政策取得了阶段性突破,但是我国的环境经济政策体系仍不够完善,服务于生态文明建设以及环境质量改善的环境经济政策仍然存在结构性短缺,因此,应积极推进环保投融资、生态环境补偿等环境经济政策的创新运用,为环境质量改善、生态文明建设提供长效机制保障。 相似文献
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Traditional construction practices provide little opportunity for environmental remediation to occur in urban areas. As concerns for environmental improvement in urban areas become more prevalent, innovative practices which create ecosystem services and ecologically functional land cover in cities will be in higher demand. Green roofs are a prime example of one of these practices. The past decade has seen the North American green roof industry rapidly expand through international green roof conferences, demonstration sites, case studies, and scientific research. This study evaluates existing international and North American green roof policies at the federal, municipal, and community levels. Green roof policies fall into a number of general categories, including direct and indirect regulation, direct and indirect financial incentives, and funding of demonstration or research projects. Advantages and disadvantages of each category are discussed. Salient features and a list of prompting standards common to successfully implemented green roof strategies are then distilled from these existing policies. By combining these features with data collected from an experimental green roof site in Athens, Georgia, the planning and regulatory framework for widespread green roof infrastructure can be developed. The authors propose policy instruments be multi-faceted and spatially focused, and also propose the following recommendations: (1) Identification of green roof overlay zones with specifications for green roofs built in these zones. This spatial analysis is important for prioritizing areas of the jurisdiction where green roofs will most efficiently function; (2) Offer financial incentives in the form of density credits and stormwater utility fee credits to help overcome the barriers to entry of the new technology; (3) Construct demonstration projects and institutionalize a commitment greening roofs on publicly-owned buildings as an effective way of establishing an educated roofing industry and experienced installers for future green roof construction. 相似文献
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Long Zhou Thomas Woodfin Tian Chen Kun Song 《Journal of Environmental Planning and Management》2018,61(3):430-450
A city's spatial footprint is covered by extensive impervious building roofs and paved surfaces, which contribute to greater storm-water runoff, more surface pollutants, and less carbon sequestration, hence, worse ecosystem services. This research conducts an empirical study on the ecological and economic impacts of a citywide adoption of green roofs and permeable pavements in Corvallis, OR. The effects on ecosystem services of using green roofs and pervious pavements for a low impact development are modelled using Integrated Value of Ecosystem Services Trade-offs and compared to those from the City's current conventional development without green roofs and pervious pavements. The differences are analysed for ecological impact by storm-water yield, storm-water purification, and carbon sequestration and economic impact by a cost-benefit comparison. The results indicate that low impact development, especially intensive green roofs on commercial/industrial buildings and permeable pavements for parking lots, plays a significant role, even with a higher initial implementation cost, for long-term urban sustainability. 相似文献
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Wen-Sheng Ou 《International Journal of Green Energy》2018,15(6):371-375
Taiwan government specifies that the average roof thermal transmittance must be less than 0.8 (w/(m2·k)) for the design of all residential buildings in order to implement the policy of saving energy. However, self-disciplined architects practice the design of aesthetic roof to blend in with green landscape so that they urgently expect the academia to provide roof greening technical information to support their idea of designing green roofs for residential buildings. In this research, a single-family housing unit is used for investigating the possibility of applying extensive roof greening to achieve building sustainable development. The experiment tasks focused on the soil denudation caused by rainwater washing and replenishing the soil carbon by irrigating the soil with gray water. Using tap water to irrigate the green roof for 12, 16, and 14 weeks causes nitrogen, phosphate, and potassium, respectively, to be reduced to less than the original levels, respectively. Applying gray water to irrigate the green roof soil will raise the soil fertility by improving nitrogen and phosphate but not obvious for potassium. 相似文献
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Timothy L. Carter Todd C. Rasmussen 《Journal of the American Water Resources Association》2006,42(5):1261-1274
ABSTRACT: Control of stormwater runoff from impervious surfaces is an important national goal because of disruptions to downstream ecosystems, water users, and property owners caused by increased flows and degraded quality. One method for reducing stormwater is the use of vegetated (green) roofs, which efficiently detain and retain stormwater when compared to conventional (black) roofs. A paired green roof‐black roof test plot was constructed at the University of Georgia and monitored between November 2003 and November 2004 for the green roof's effectiveness in reducing stormwater flows. Stormwater mitigation performance was monitored for 31 precipitation events, which ranged in depth from 0.28 to 8.43 cm. Green roof precipitation retention decreased with precipitation depth; ranging from just under 90 percent for small storms (< 2.54 cm) to slightly less than 50 percent for larger storms (> 7.62 cm). Runoff from the green roof was delayed; average runoff lag times increased from 17.0 minutes for the black roof to 34.9 minutes for the green roof, an average increase of 17.9 minutes. Precipitation and runoff data were used to estimate the green roof curve number, CN = 86. This information can be used in hydrologic models for developing stormwater mitigation programs. 相似文献
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Robert VanWynsberghe 《Journal of Environmental Planning and Management》2016,59(4):730-745
This study explores the potential for societies to create more green jobs for the disadvantaged. The research questions are related to how policy instruments can support green jobs and how green jobs can support the disadvantaged. These questions are asked in the context of the province of British Columbia in Canada, with implications for the global economy. Findings indicate that green jobs policies have direct and indirect effects on the growth of sustainable industries at a municipal level. Furthermore, in BC policy, green jobs are unmistakably connected to the government perception of green growth. Finally, the preferred pathway for policy implementation appears to involve local municipalities that apply for funding for projects that can potentially connect local actors and include the disadvantaged. Several policies accomplish the inclusion of the disadvantaged. The first section of this paper provides the BC provincial context on green jobs. The second section describes and analyzes a sample of thirteen BC policy instruments, as well as concurrent labor market policy activities for their inclusion of the disadvantaged. The third section posits a provisional policy framework for training and hiring more inclusively for green jobs. The fourth section offers six recommendations to bolster green jobs for all at a national and international level. 相似文献
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我国政府高度重视绿色消费,绿色消费政策框架的雏形已初步显现。随着各级政府相关政策的出台,对政策系统梳理,以及对政策的落实情况和实施效果进行评估具有重要的学术价值和现实意义。基于层次梳理法,从中央政策、国务院政策和部门政策三个“战略层面”,以及部门政策中具备“经济类”和“信息化工具类”属性的两个“目标层面”,结合政策的功能作用和市场认可程度将部门政策细分到“实施层面”,梳理得出我国绿色消费政策框架。通过分析我国绿色消费政策的分布情况和特点,对绿色消费政策与国家统计局的居民消费支出分类进行对比分析。同时,本文对我国已经实施的各类政策效果进行评估,分析目前我国绿色消费政策和实践面临的挑战,提出相关政策建议。 相似文献
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Air pollutants often have adverse effects on human health. This paper investigates and ranks a set of policy and technological interventions intended to reduce such health costs in the high population density areas of South Africa. It initially uses a simple benefit-cost rule, later extended to capture sectoral employment impacts. Although the focus of state air quality legislation is on industrial pollutants, the most efficient interventions were found to be at household level. These included such low-cost interventions as training householders to place kindling above rather than below the coal in a fireplace and insulating roofs. The first non-household policies to emerge involved vehicle fuels and technologies. Most proposed industrial interventions failed a simple cost-benefit test. The paper's policy messages are that interventions should begin with households and that further industry controls are not yet justifiable in their present forms as these relate to the health care costs of such interventions. 相似文献
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Tracking the implementation of green credit policy in China: top-down perspective and bottom-up reform 总被引:1,自引:0,他引:1
The Chinese government has introduced the green credit policy to mitigate the environmental impact of industrialization by reining in credit loans to companies and projects with poor environmental performance. This research investigated the implementation of the green credit policy both at the national and provincial levels. Our results show that the green credit policy is not fully implemented. The wide-ranging impact on high-polluting and high energy-consuming industries, vague policy details unclear implementing standards, and lack of environmental information are the main problems in the implementation of the green credit policy in China. On the other hand, the practice at local level (Jiangsu Province) is more practical by integrating green credit policy with the environmental performance rating system. Finally, suggestions are outlined to improve China's green credit policy. 相似文献
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Making the transition to a green economy is a major policy driver in the UK and other countries. Entrepreneurs are suggested as being at the forefront of this transition and as a driving force for sustainability. These “green entrepreneurs” may represent a new type of entrepreneurial behaviour combining economic, environmental and social aims. In this paper, we present empirical work conducted with green entrepreneurs in the UK green building sector. Buildings have significant impacts on the environment, both in terms of materials and post-construction energy demands. Drawing on sustainability transitions theory, we examine the role of green entrepreneurs in affecting change and suggest that green building niches are less consensual than previously theorised. In theorising green entrepreneurs, we also point to the need to consider them within wider networks of activity rather than as lone actors and the implications this has for policy. 相似文献
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This study examined the role of gas flaring in the rapid corrosion of zinc roofs in the Niger Delta Region of Nigeria. Four
experimental sites were set up where samples of galvanized iron sheet (popularly called “zinc roofs”) were exposed to the atmosphere. The corrosion behaviour of galvanized iron sheet through weight loss determination under
different environmental conditions was monitored. A uniform angle of inclination of 22° (which represents the mean angle of
inclination of house roofs in the study area) was chosen. The results showed that corrosion was more severe (average readings
of 25.89, 34.30, and 21.27 mg) in the three experimental sites that were located near pollution sources such as gas flare
station or sea aerosols, than at the controlled site (2.36 mg) that was located far away from pollution sources. It is recommended
that government’s policy of zero gas flaring for oil companies operating in the Niger Delta by 2010 be pursued with vigour,
so as to realize the deadline and subsequently reduce the economic burden currently suffered by the inhabitants of the Niger
Delta through frequent replacement of house roofs and incessant illnesses. In addition, individuals and companies operating
in the region should avoid bush burning, reduce the rate of fossil fuel consumption by conserving energy, and install catalytic
converters in cars and industrial chimneys, so as to reduce emissions. 相似文献