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941.
宫胁法在建设上海城市生态环境中的应用 总被引:22,自引:0,他引:22
介绍了利用宫胁法在城市地区重建稳定的自然植被的理论基础,方法和步骤,对宫胁法与常用绿化方法(种植草坪及大苗栽种)作了比较,并结合上海城市环境生态恢复,分析了潜在的植被类型,列举了一些适合上海环境条件的乡土植物种类。 相似文献
942.
Zhigang LIU Ying WANG Yansheng LI Hui CHANG 《Frontiers of Environmental Science & Engineering in China》2008,2(4):410-414
Electro-assisted regeneration (EAR) for the mixed bed of strongly acidic cation and weakly basic anion exchange resins with
the Al(OH)3 suspension in a three-compartment cell was investigated. The desalination experiments were carried out to evaluate
the characteristic of the regenerated mixed resins. Experimental results showed that the efficiency of resin regeneration
was strictly dependent on the voltage, regeneration time, and feed regenerant flow rate. The amount of the effluent reached
50 times the volume of the resins bed, and the conductivity was less than 1.0 μs/cm. Compared to the conventional ER, the
total effluent volume of EAR was about 1000 mL more than that of ER under the same conditions, and the outlet conductivity
was significantly lower. The desalination and regeneration reaction mechanisms of the mixed resins indicated the regeneration
efficiency of resin with Al(OH)3 as the regenerant was much higher than that with H2O. 相似文献
943.
煤矸石山复垦整形设计中的几个关键问题 总被引:2,自引:0,他引:2
煤矸石山复垦绿化是解决矸石山污染的一种有效途径,煤矸石山的复垦整形是绿化的基础。通过对国内外煤矸石山复垦整形进行总结,探讨了整形形状设计、边坡稳定性分析、排水系统设计、边坡加固和防侵蚀的措施等,为今后的煤矸石山复垦整形提供参考。 相似文献
944.
通过美国金郡的湿地恢复经验、普吉特海湾的雨水管理系统以及加拿大汤姆逊公园废弃地恢复规划案例借鉴国外城市生态恢复规划的重点环境生态策略、措施与后续维护方法、管理等,以国外经验启示我国生态恢复工作中应关注的重点。 相似文献
945.
Planting urban trees and expanding urban forest canopy cover are often considered key strategies for reducing climate change impacts in urban areas. However, urban trees and forests can also be vulnerable to climate change through shifts in tree habitat suitability, changes in pests and diseases, and changes in extreme weather events. We developed a three-step framework for urban forest vulnerability assessment and adaptation that scales from regional assessment to local on-the-ground action. We piloted this framework in the Chicago region in 10 locations representing an urban-exurban gradient across a range of socioeconomic capacities. The majority of trees across a seven-county region had low to moderate vulnerability, but many of the least vulnerable species were nonnative invasive species. Urban forests in the 10 pilot locations ranged in vulnerability largely due to differences in economic and organizational adaptive capacity. Adaptation actions selected in these locations tended to focus on increased biodiversity and restoration of natural disturbance regimes. However, adaptation actions in more developed sites also included incorporating new species or cultivars. Lessons learned from the pilot area can be used to inform future efforts in other urban areas. 相似文献
946.
抚顺市城市生态环境现状及对策研究 总被引:5,自引:0,他引:5
采用宋永昌构建的生态城市评价指标体系与方法 (宋永昌 1 999年 ) ,对抚顺市城市生态环境进行评价 ,提出抚顺城市生态建设对策。城市生态环境评价结果表明 :抚顺城市生态化程度较低 ,各项指标与省内其它城市差距很大 ,城市生态建设迫在眉睫。 相似文献
947.
Managing climate change risks in New York City’s water system: assessment and adaptation planning 总被引:4,自引:0,他引:4
Cynthia Rosenzweig David C. Major Kate Demong Christina Stanton Radley Horton Melissa Stults 《Mitigation and Adaptation Strategies for Global Change》2007,12(8):1391-1409
Managing risk by adapting long-lived infrastructure to the effects of climate change must become a regular part of planning
for water supply, sewer, wastewater treatment, and other urban infrastructure during this century. The New York City Department
of Environmental Protection (NYCDEP), the agency responsible for managing New York City’s (NYC) water supply, sewer, and wastewater
treatment systems, has developed a climate risk management framework through its Climate Change Task Force, a government-university
collaborative effort. Its purpose is to ensure that NYCDEP’s strategic and capital planning take into account the potential
risks of climate change—sea-level rise, higher temperature, increases in extreme events, changes in drought and flood frequency
and intensity, and changing precipitation patterns—on NYC’s water systems. This approach will enable NYCDEP and other agencies
to incorporate adaptations to the risks of climate change into their management, investment, and policy decisions over the
long term as a regular part of their planning activities. The framework includes a 9-step Adaptation Assessment procedure.
Potential climate change adaptations are divided into management, infrastructure, and policy categories, and are assessed
by their relevance in terms of climate change time-frame (immediate, medium, and long term), the capital cycle, costs, and
other risks. The approach focuses on the water supply, sewer, and wastewater treatment systems of NYC, but has wide application
for other urban areas, especially those in coastal locations. 相似文献
948.
949.
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
950.