河北雄安新区建设的区域地表本底特征与生态管控
Regional urban land-cover characteristics and ecological regulation during the construction of Xiong'an New District, Hebei Province, China
查看参考文献42篇
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文摘
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河北雄安新区建设对于实施京津冀协同发展战略及有机疏解北京非首都功能、优化区域空间格局,提升京津冀城市群生态系统服务和改善人居环境具有重要意义。本文基于多期遥感图像、土地利用/覆盖变化数据、生态系统服务评估数据以及高精度城市地表信息等专题数据集,从雄安新区建设涉及的京津冀城市群区域背景和规划区覆盖范围两个层面揭示了新区建设的区域地表本底状态,并提出了相应的生态保护与管控建议。结论表明:京津冀城市群正呈现建设用地快速扩张以及由此导致的下垫面不透水地表高密度连绵集聚式态势,城镇用地和城市不透水地表较2000年分别增长了1.27倍和1.43倍,且接近15%的子流域水生态系统健康状况受到不透水地表的严重影响。雄安新区建设涉及的雄县、容城、安新三县以农田、乡镇及农村聚落和水域及湿地生态系统为主,其开发建设应围绕实现疏解北京非首都功能为目标,适度控制人口、产业规模,建设宜居生态健康城市。规划初期,应将其纳入国家海绵城市建设试点范畴,参照国际低影响度开发模式,加强城市绿色基础设施建设。基于当前下垫面特征,前期规划应考虑构建新区与保定、北京和天津城市之间的绿化生态斑块和生态廊道;新区内建设用地不透水地表整体比例应控制在60%之内,核心区不超过70%。新区建设过程中需确立“以水定城”理念,在新区基础设施建设、供排水方面充分考虑雨水收集和循环利用。 |
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其他语种文摘
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Development of Xiong'an New District (XND) is integral to the implementation of the Beijing- Tianjin- Hebei (BTH) Integration Initiative. It is intended to ease the non- capital functions of Beijing, optimize regional spatial patterns, and enhance ecosystem services and living environment in this urban agglomeration. Applying multi-stage remote sensing (RS) images, land use/cover change (LULC) data, ecosystem services assessment data, and high-precision urban land-cover information, we reveal the regional land-cover characteristics of this new district as well as across the planned area of the entire BTH urban agglomeration. Corresponding ecological protection and management strategies are also proposed. Results indicated that built- up areas were rapidly expanding, leading to a continuous impervious surface at high density. Urban and impervious surface areas (ISAs) grew at rates 1.27 and 1.43 times higher than that in 2000,respectively, seriously affecting about 15% area of the subbasins. Construction of XND mainly encompasses Xiongxian, Rongcheng, and Anxin counties, areas which predominantly comprise farmland, townships and rural settlements, water, and wetland ecosystems. The development and construction of XND should ease the non- capital functions of Beijing, as well as moderately control population and industrial growth. Thus, this development should be included within the national 'sponge city' construction pilot area in early planning stages, and reference should be made to international low- impact development modes in order to strengthen urban green infrastructural construction. Early stage planning based on the existing characteristics of the underlying surface should consider the construction of green ecological patches and ecological corridors between XND and the cities of Baoding, Beijing, and Tianjin. The proportion of impervious surfaces should not exceed 60%, while that of the core area should not exceed 70%. The development of XND needs to initiate the concept of 'planning a city according to water resource amount' and incorporate rainwater collection and recycling. |
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来源
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地理学报
,2017,72(6):947-959 【核心库】
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DOI
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10.11821/dlxb201706001
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关键词
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雄安新区
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城市土地利用
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城市不透水地表
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京津冀城市群
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生态保护策略
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地址
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1.
中国科学院地理科学与资源研究所, 北京, 100101
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中国科学院大学, 北京, 100049
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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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0375-5444 |
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基金
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北京市自然科学基金
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文献收藏号
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CSCD:6015360
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