中国城市化过程及其资源与生态环境效应机制
Urbanization Process and Effects of Natural Resource and Environment in China: Research Trends and Future Directions
查看参考文献44篇
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文摘
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目前中国城市化进程表现为速度过快、地域差异显著以及城乡二元结构明显等特征.城市化带来了显著的生态效应,使城市生态系统的结构、过程和功能受到影响或发生不可逆转的变化,出现了耕地资源流失、水资源稀缺、能源压力、城市环境污染严重以及城市区域生态占用扩大等资源与生态环境问题.目前国内外学者研究了城市热岛效应、城市地表覆被变化、城市生物多样性损失以及城市水土资源等问题,但多侧重单要素、单城市、单学科研究,缺乏多尺度机理性的研究.鉴于此,提出若干未来城市化及其生态环境效应研究的方向与议题,归纳为:(1)中国城市化过程多尺度定量模拟与监测研究;(2)阐明城市化影响下地表自然过程和人文过程相互作用的机理;(3)资源与生态环境约束下中国未来城市化的可能情景及其风险评估等. |
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其他语种文摘
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The urbanization process in China is characterized by excessive development, significant regional difference, and obvious urban-rural dual structure, resulting in significant eco-environmental impacts on urban ecosystems. Those impacts include cultivated land loss,water scarcity, energy shortage, environmental pollutions, and increased ecological footprint in urban area, which are the main causes for retrogressive succession of ecosystem structures, processes and functions. Presently, related researches on urbanization process and corresponding eco-environmental effects focus on urban heat island,urban land use/land cover, urban hydrological effects, urban biodiversity, and urban water and soil resources, and show specific features and trends such as particular emphasis on single urbanization factor, single city case, and single scale descriptive analysis, especially those lacking of multi-scale researches on dynamical mechanisms of urban spatio-temporal development. Therefore, authors propose some perspective research issues on urban processes and their eco-environmental effects, and they can be concluded to three development directions: (1) analyzing multi-scale dynamical mechanisms of urbanization process in China and spatio-temporal patterns and characteristics; (2) explaining interactional mechanisms between physical and human process under urbanization effects; and (3) predicting future development trends and risk assessment of urbanization in China under different scenarios of the constraints imposed by natural resources and eco-environmental conditions. |
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来源
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地理科学进展
,2009,28(1):63-70 【核心库】
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关键词
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城市化过程
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资源与生态环境效应
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研究动态
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中国
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地址
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北京大学城市与环境学院, 北京, 100871
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-6301 |
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学科
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自然地理学 |
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基金
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国家自然科学基金重点项目
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国家自然科学基金
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文献收藏号
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CSCD:3559728
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44
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