%0 Journal Article
%T Behavioral characteristics of settlement patches in urbanization of Nanjing<br>南京城市扩展过程中聚落斑块的行为特征
%A CHEN Hong
%A LIU Mao-song
%A XU Mei
%A HUANG Gui-fang
%A CHEN Fen-fei
%A <br>陈虹
%A 刘茂松
%A 许梅
%A 黄桂芳
%A 陈奋飞
%J 生态学杂志
%D 2008
%I 
%X Urbanization is mainly represented as the expansion or shrinkage of settlement patches from the perspective of landscape dynamics. Based on the Landsat TM images of the Nanjing metropolitan region in 1988, 1998 and 2003, seven evolution types of settlement patches, i. e. , newly generated, dissolved, expansion, shrinking, fusion, division, and multiformity were distinguished, and the patch-specific patterns for the major types along the urban-rural gradient zones were studied with buffering analysis. The results demonstrated that the total area, patch number, mean patch size, and maximum patch index of the settlement patches increased dramatically in 1988-2003. Though the newly generated and muhiformity patches took the greatest proportion of all the changed patches, the areas of shrinking and dissolved patches increased simultaneously. The distribution pattern of different evolution type patches varied along the urban-rural gradients. In the main city region, the patch density of muhiformity patches was much higher in 1988-1998 than in 1998-2003, whereas no obvious difference occurred in other gradient zones. The newly generated patches showed similar patterns in the two periods. In the main city region, the patch density and the area proportion were relatively small; while in the urban fringe area, they were higher, but declined with the increasing distance to the urban center. There were two peaks of the expansion patches in the main city region and the exurb area in the first period; while in the second period, the number and area decreased obviously in the exurb area. The shrinking and dissolved patches mainly distributed in the main city region, urban fringe, and exurb area. As a whole, there existed a shrinking and dissolving process together with the fast urbanization, and the main city region and suburbs had different sprawling rhythms.
%K patch evolution type
%K spatial pattern
%K urban-rural gradient zone
%K Nanjing<br>斑块演变类型
%K 空间格局
%K 城乡梯度带
%K 南京
%K 南京城市
%K 扩展过程
%K 聚落
%K 斑块
%K 行为特征
%K Nanjing
%K urbanization
%K patches
%K settlement
%K 扩展模式
%K 消亡过程
%K 快速
%K 区域
%K 速度
%K 程度
%K 发现
%K 比较
%K 边缘区
%K 区位
%K 高发区
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=B04840A985D251F36078BD07A90EF003&aid=6A521927A6789DFC4903DDA25F1648E9&yid=67289AFF6305E306&vid=DB817633AA4F79B9&iid=CA4FD0336C81A37A&sid=014B591DF029732F&eid=95D537AC89B28832&journal_id=1000-4890&journal_name=生态学杂志&referenced_num=0&reference_num=29