甬台温地区城镇用地扩展时空分布研究

Spatio-temporal characteristics of urbanization area growth in Ningbo, Taizhou and Wenzhou city

甬台温地区在城市化过程中大量城镇用地扩展已经引起学术界的广泛关注。本文根据1995、2000、2005和2010年四个时期的浙江省土地利用数据,利用GIS提取甬台温地区各个时期的城镇用地,分析城镇用地的扩展特征和扩展来源。结果表明:1995~2010年,甬台温地区城镇用地扩展速度和强度呈现先升后降的趋势,扩展强度由强至弱依次为副省级市、地级市、县级市县;甬台温地区城镇用地扩展的内部结构指数和空间结构指数均为宁波>温州>台州;甬台温地区城镇用地的扩展来源主要是耕地、林地和农村居民点的城镇化,其中占用耕地的比例最大。

In the process of urbanization,a large number of urban land expansion in Ningbo,Taizhou and Wenzhou city has aroused widespread concern in academia.According to the land use data of Zhejiang Province in four periods(1995,2000,2005and2010),the study extracts urban land information for each period with the help of GIS software,and analyzes the characteristics and sources of urban land expansion in Ningbo,Taizhou and Wenzhou city.The results show:(1)From1995to2010,the expansion velocity and intensity of the urban land in Ningbo,Taizhou and Wenzhou city has increased first and then decreased,the characteristics of the expansion intensity are sub-provincial cities>prefecture-level cities>county-level cities.(2)In the expansion of the internal structure index and spatial structure index are Ningbo>Wenzhou>Taizhou.(3)The extension of urban land use in Ningbo,Taizhou and Wenzhou city is mainly the urbanization of cultivated land,woodland and rural settlements,and the great majority source is cultivated land.