摘要
基于三期遥感影像数据(MSS、ETM、CBERS)对城市建成区的面积进行了调查,研究30多年来东北三省城市的扩展情况,并且结合NDVI数据,对研究区范围内的植被覆盖情况进行了研究。结果表明:1976—2000年、2000—2007年两个阶段,城市建成区的面积持续增加,年均扩展率由5.10%增加至6.32%,扩展强度比较显著的区域主要分布在哈大交通经济带上;研究区范围内东部的植被覆盖情况明显好于西部,NDVI均值随与城市距离的增加而提高。
Based on the remote sensing images（MSS,ETM,CBERS）for three periods,the authors investigate the urban buildi-up area,and study the expansion in three provinces of Northeast China in the past 30 years and vegetation coverage,combining with the NDVI data.The results showed that the urban build-up area continue to increase in 1976-2000 and 2000-2007,the annual mean expansion rate increased from 5.10% to 6.32%,the notable area of expanding strength mainly distributed in Harbin-Dalian traffic economic belt;the vegetation coverage in the east was better than the west within the scope of the study areas,and NDVI mean raised with the increase of urban distance.
出处
《世界地质》
CAS
CSCD
2012年第1期218-223,共6页
World Geology
基金
中国地质调查局专项资助项目(1212010911084)
关键词
遥感
城市扩展
NDVI
东北三省
remote sensing
urban expansion
NDVI
three provinces of Northeast China
