基于VIIRS影像的哈尔滨建成区空间变化分析
Spatial Change Analysis of Harbin Urban Built-up Area Based on VIIRS Images
张雨欣 1曹宇佳 1李佳明1
作者信息
- 1. 黑龙江地理信息工程院,黑龙江哈尔滨 150081
- 折叠
摘要
城市建成区范围可用于衡量城市化进程.基于VIIRS夜间灯光遥感影像,分别用夜间灯光指数法与支持向量机分类法对哈尔滨市城市建成区进行提取,并对比2种方法的提取精度.选取提取精度更高的SVM分类法分别提取2018、2022城市建成区范围,计算哈尔滨建成区两年的景观指数,了解哈尔滨建成区空间变化.哈尔滨市除原有建成区范围由中心向四周扩张外,哈尔滨新区建成区范围有明显增加,景观格局复杂度有所提高,表明随哈尔滨市发展,区域内部协调发展程度有所提高.
Abstract
Urban built-up area can be used to measure urbanization process. In this paper,based on VIIRS night light remote sensing images,the night light index method and support vector machine classification method were used to extract the built-up area in Har-bin,and the extraction accuracy of the two methods was compared. Urban built-up areas in 2018 and 2022 were extracted respectively by SVM,and the landscape index of Harbin's built-up areas in two years was calculated to understand the spatial changes of Harbin' s built-up areas.In addition to the expansion of the original built-up area from the center to the periphery,the scope of the New Dis-trict built-up area has increased significantly,and the complexity of landscape pattern has increased.It shows that with the develop-ment of Harbin,the degree of coordinated development within the region is improved.
关键词
夜光遥感/城市建成区/景观分析Key words
nighttime light remote sensing image/built-up area/landscape analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据