【摘要】 基于南京市2004年、2007年、2010年、2013年和2016年5期Landsat TM遥感影像,采用景观指数法和等扇方位法等空间分析方法,对南京市城市扩张特征及其形态演变进行了定量分析,在时间和空间上揭示了南京市城市扩张与形态演变特征。结果表明,2004—2016年间,南京市建设用地的扩张主要是通过大面积的侵占耕地来实现,并且城市扩张速度快于人口增长速度,不利于南京市城市结构的可持续发展。建成区面积持续增长、城市扩展速度逐年增高,城市扩张呈现先强势增长后缓慢扩张态势,城市空间增长的区域差异明显;南京市城市内部结构趋于稳定,外部轮廓趋于紧凑,主城区扩张减弱;扩张模式主要以拥江发展为主,南京市建成区逐步形成"两带一轴"的城镇空间结构格局,并呈多中心发展趋势;南京市城市扩张形态呈非均衡空间分异状态,城市扩张的方向主要集中在南京市北部、西南和东南部,并呈现明显阶段性特征。更多还原

【Abstract】 This study is based on five Landsat TM remote sensing images obtained in Nanjing City in 2004,2007,2010,2013 and 2016 respectively. With landscape index method,fans analysis method and some other spatial analysis methods,the expansion characteristics of Nanjing City and its evolution were analyzed quantitatively,which revealed urban expansion in Nanjing City and morphological evolution feature in time and space. The results show that,during the period of 2004—2016,the construction land expansion of Nanjing City was mainly realized through occupying large areas of cultivated,and the speed of city expansion was faster than population growth,which was not conducive to the sustainable development of Nanjing City structure. In the growth of the construction of the city area,city expansion rate increases year by year,city expansion first strong expands and then the expansion tends to slow down,regional differences of city space growth are significant. The internal structure of Nanjing City tends to be stable,the external contour tends to be compacted,and urban area expansion is weakened. Expansion mode is mainly along the river,Nanjing City gradually forms urban spatial structure,exhibiting the pattern of the"two belts and one axis",and is in a multi center development trend. Urban expansion in Nanjing City forms a non-differential balanced state space,and the city expansion is mainly concentrated in the north,southwest and southeast of of Nanjing,and shows obvious characteristics of various stages.更多还原