基于航空影像的广州市海珠区绿地演变分析

Changing Analysis of Green Space using Aerial images in Haizhu City

本文以广州市海珠区绿地为研究对象,利用e Cognition软件对2002和2012年2期高空间分辨率航空影像提取绿地信息,对分类结果进行动态变化分析,并结合人口数据分析人均绿地变化。结果表明:在2002年至2012年期间,海珠区绿地总面积减少了127.46hm^2,其中耕地、其他绿地以及生产绿地减少最为明显,面积分别减少了321.72、81.68和288.06,其他类型绿地面积均有增加,海珠区人均绿地增加3.77m^2。

This paper analyzed the change of urban green space in Haizhu city. Remotely sensed data used in this study included two aerial images with 0.5 m resolution acquired in 2002 and 2012.According to the green space information extracting from the aerial images, the dynamic change of green space and Per capita green areas during 2002-2012 were analyzed. The result revealed that the total area of green space reduced 127.46 ha from 2002 to 2012 resulted from the large-scale urbanization and the implementation of some policies, especially the farmland, others green space and garden nursery, with decreasing 321.72 ha, 81.68 ha and 288.06 ha. Other types of green space have increased. The Per capita green areas have increased by 3.77 m^2.