摘要
利用遥感技术对经济快速发展的晋江沿岸地区的成片开发土地进行时空变化监测。首先,利用归一化差值不透水面指数(NDISI)提取晋江沿岸成片开发的土地,然后,通过变化监测查明了1987 2008年间晋江沿岸成片开发土地的时空变化。研究表明,近21年来,晋江沿岸成片开发土地规模急剧扩大,其面积增加了18 097hm2。研究发现,土地成片开发主要发生在城市沿江的周边地区,特别是晋江下游至河口段两岸。土地利用变化分析表明,成片开发土地主要占用了两岸大量的耕地。最后,对变化的驱动力进行分析,结果显示,晋江沿岸成片开发土地的剧增与当地经济、人口、房地产业的快速发展有密切的关系。
In this paper, we used remote sensing technology to monitor the spatiotemporal dynamics of large developed land areas in the shore areas of the Jin River from 1987 to 2008. The area is a fast economic development region, and therefore has witnessed fast urban expansion and population increase. The study used three multitemporal Landsat images of 1987,1996 ,and 2008. Firstly, the newly developed normalized difference impervious surface index （NDISI） was used to extract the impervious surface areas （ISAs） from the used Landsat images,because the developed area is dominated by the ISAs. And then, the change detection technique was employed to reveal the change of the large developed land areas from 1987 to 2008 in the studied shore areas. The result shows that during the 21 study years the large developed land area has significantly increased, up to a total area of 18 097 ha of new developed lands. Most of them occur in the river shore areas near city center, especially in the downstream to estuary areas of the river. The increased large developed land areas were mainly converted from paddy fields and forested lands. Socio-eeonomic data were integrated with the spatial data to analyze the driving forces to the increase of the large developed land areas. The result indicates that fast economic development, urban population increase, and real estate development were the three major deriving forces contributing to the large developed land area increase.
出处
《地球信息科学》
CSCD
北大核心
2010年第1期103-110,共8页
Geo-information Science
基金
福建省重大专项前期研究项目(2005YZ1011)
关键词
遥感
成片开发土地
变化
驱动力
晋江沿岸
remote sensing
large developed land area
change
deriving force
Jin River
