苏州城乡非建设用地破碎化的时空特征  

Spatial and Temporal Characteristics of Fragmentationof Urban and Rural Non-Construction Land in Suzhou

作　　者：邵大伟[1] 吴殿鸣[1] Shao Dawei;Wu Dianming(School of Architecture and Lrban Planning,Suzhou Lniversity of Science and Technology,Suzhou 215011,Jiangsu,China)

机构地区：[1]苏州科技大学建筑与城市规划学院,江苏苏州215011

出　　处：《中国城市林业》2021年第1期48-53,共6页Journal of Chinese Urban Forestry

基　　金：国家自然科学基金青年项目“时空多尺度视角下城乡非建设用地转用的分异机制及其管控对策研究:以苏州为例”(51908392);国家自然科学基金面上项目“城市绿地与居住用地空间耦合的过程、效应与机理研究:以南京为例”(51878429);教育部人文社会科学研究项目“基于GIS技术的公园绿地社会空间分异效应及调控对策研究:以苏州为例”(18YJCZH189);苏州科技大学风景园林学学科建设项目联合资助。

摘　　要：非建设用地破碎化是土地开发建设强度的关键表征,也制约着城乡土地资源利用效率和自然生态效益。文章利用多时相Landsat TM/ETM影像数据,开展对苏州市域1995—2015年5个时间节点非建设用地破碎化的演变研究。结果表明:1)非建设用地缩减强度和破碎化阶段性突出,2005—2010年最为剧烈,之后趋势有所放缓;2)耕地流失是非建设用地破碎化的根源;3)破碎化空间相关性逐渐下降,呈现随机、均衡化趋势;4)破碎化表现为中心城区—东西横向蔓延式—南北纵向跳跃式的发展规律。The fragmentation of non-construction land is a key indicator of the intensity of land development and construction,and it also restricts the utilization efficiency and natural ecological benefits of urban-rural land resources.Based on Multi-temporal Landsat TM/ETM image data,the evolution characteristics of the non-construction land fragmentation are revealed at five time points in Suzhou from 1995 to 2015.The results show that:1)The reduction intensity of non-construction land and land fragmentation in Suzhou is strong,especially in 2005-2010,and after 2010 the trend slows down;2)The cultivated land loss is the root reason of non-construction land fragmentation;3)The correlation of fragmentation space is gradually decreasing,showing a random and balanced trend;and 4)Fragmentation presents the development law of horizontal spreading from central urban area to the east and west directions,and vertical jumping development from the central urban area to the north and south directions.

关 键 词：非建设用地 破碎化 景观指数 空间自相关 苏州 

分 类 号：TU984[建筑科学—城市规划与设计] F301.2[经济管理—产业经济]