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成都市中心城区绿地景观格局时空演化:“城”与“郊”的比较 预览

Temporal and Spatial Evolution of Green Space Landscape Pattern in Center Chengdu:a Comparison between “Urban” and “Suburb”
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摘要 基于2000年与2018年的遥感数据,采用GIS、RS技术和Fragstats 4.2景观分析软件,研究成都市中心城区绿地景观格局的时空演变特征。结果表明:(1)数量上,2000-2018年,成都市绿地率由12.55%增为29.39%,新增绿地主要由耕地、建设用地转化而来,减少的绿地主要转为了建设用地、耕地;(2)空间布局上,2000-2018年,建设用地由三环向外围扩张,大斑块绿地和大量农田、菜园等生态绿地退到外围郊区,绿地空间分布不均,且主要向外围郊区的东北角和东南角集聚,东北角破碎度高于东南角,南部生态质量优于北部;(3)景观格局上,2018年,由市中心到中心城区边缘,绿地斑块个数增多、斑块破碎度下降、斑块形状指数和聚集度上升,'外围近郊区'景观格局优于'主城区',2000-2018年,二环到三环的斑块形状指数下降。为此本文提出以区域生态本底为基础,在外围郊区设置'禁建区'控制城市蔓延。同时,增加廊道绿地建设,促进'城'与'郊'绿地联系和均衡布局。 GIS,RS and Fragstats4.2 landscape structure analysis software were used to reveal the spatial evolution of green space landscape pattern in Chengdu’s central area based on satellite remote sensing data of 2000 and 2018 in this paper.The results showed that:(1)In terms of quantity,the ratio of green area to total in central Chengdu increaseed from 12.55%to 29.39%,the newly-increased green land areas were mainly from the city construction land and cultivated land,while the decreased green land was transferred to town construction and cultivated land,from 2000 to 2018.(2)In special arrangement,construction land expanded from the third ring road to the peripheral suburb,large green patches,massive farmland and vegetable gardens and other ecological green space was retreat to the periphery suburbs from 2000 to 2018,resulting in uneven distribution of green space.The green land was mainly gathered together along the southeast and northeast of outer suburb.(3)In terms of landscape pattern,the patch fragmentation decreased,while the number of green patches,the landscape shape index and the aggregation index of green patches increased from the center of the city to the edge of the city,so the landscape pattern of'outer suburb'is better than that of'main city',the landscape shape index between the second and the third ring decreased from 2000 to 2018.At last,the corresponding strategies were suggested:setting'zone of construction banning'in outer suburbs to control the sprawl of construction land,and establishing'corridor green space'to promote the connection and balance the distribution of green between'the main city'and'the outer suburb'.
作者 江世丹 潘洪义 姜允芳 JIANG Shi-dan;PAN Hong-yi;JIANG Yun-fang(School of Urban and Regional Science,East China Normal University,Shanghai 200241,P.R.China;Center for Modern Chinese City Studies,East China Normal University,Shanghai 200241,P.R.China;Institute of Geography and Resources Science,Sichuan Normal University,Chengdu Sichuan 610068,P.R.China)
出处 《西部林业科学》 CAS 北大核心 2019年第3期90-96,103共8页 Journal of West China Forestry Science
基金 国家自然科学基金项目(51578344,51878279,51878418) 教育部规划基金项目(18XJA630005) 四川省哲学社会科学规划项目(SC18B095)共同资助.
关键词 城市绿地 景观格局 景观生态学 斑块 破碎化 成都市 green space landscape pattern landscape ecology patch fragmentation Chengdu city
作者简介 第一作者:江世丹(1995-),女,硕士研究生,主要从事城市地理研究。E-mail:shidjiang@163.com;通讯作者:姜允芳(1972-),女,副教授,主要从事城市生态规划与人居环境方面研究。E-mail:yfjiang@re.ecnu.ed
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