【摘要】 城市不透水面是城市化水平的重要指标,研究城市不透水面对于促进城市的可持续发展具有重要意义。在城市发展过程中,城市不透水面的增加必将伴随着某一种或多种土地利用类型的减少。本文以连云港为例,综合利用V-I-S模型、NDVI(归一化差分植被指数)、MNDWI(改进归一化差分水体指数)和非监督分类技术提取城市不透水面,分析了1987—2014年间连云港市不透水面的变化情况,进一步探讨了连云港市土地利用类型变化趋势及驱动因素。结果表明,连云港的不透水面在1987—2014年间共计增加了29.70%。在不透水面持续增加的同时,耕地和沿海地区(包括盐场和滩涂)面积大幅度降低,土地利用类型发生重大变化。更多还原

【Abstract】 Impervious surface is an important indicator of the level of urbanization. It is of great significance to study the impervious surface to promote the sustainable development of the city. In the process of urban development,the increase of impervious surface cities is bound to be accompanied by a reduction of one or more types of land use in the city. This paper,taking Lianyungang as an example,introduces the methods of extracting urban impervious surface based on VIS model,NDVI (normalized vegetation index),MNDWI (modified normalized water body index) and unsupervised classification,analyzes the changes of impervious surface in Lianyungang from 1987 to 2014,and on this basis,analyzes the trend and driving forces of land use types in Lianyungang City in depth. The results show that the impervious surface of Lianyungang increased by a total of 29.70% between 1987 and 2014. While the impervious surface continues to increase,the area of cultivated land and coastal areas (including saltworks and tidal flats) has been greatly reduced,and the types of land use have undergone significant changes.更多还原