1990～2015年韩国土地覆被变化及其驱动因素

发布时间：2018-03-30 05:46

本文选题：土地覆被变化　切入点：驱动因素　出处：《地理科学》2017年11期

【摘要】：以中等分辨率Landsat系列影像为数据源,利用面向对象的图像分析(OBIA)方法,研究1990~2015年韩国土地覆被变化的主要特征与驱动因素。研究发现:近25 a来,韩国人工表面、林地、湿地、耕地和水体面积变化较大。人工表面扩张最为明显,面积增加了1 847.24 km2(+38.97%),主要发生在以首尔为中心的首都圈地区,多由耕地和林地转化而来。林地、湿地和耕地面积分别减少776.71 km2、707.32 km2和426.65 km2。过去25 a间韩国土地覆被变化主要集中分布在海拔较低(100 m)和坡度较小(3°)的区域。人类活动因素,如人口增长、城市扩张、经济发展及政策调控等是造成韩国土地覆被变化的主要原因。
[Abstract]:The main characteristics and driving factors of land cover change in South Korea from 1990 to 2015 were studied by using object oriented image analysis (OBIA) method based on Landsat series images with medium resolution. The results showed that: in recent 25 years, artificial surface, woodland, wetland in South Korea, The area of cultivated land and water body changed greatly. The artificial surface expanded most obviously, the area increased by 1 847.24 km2 (38.97 km2), mainly occurred in the capital region with Seoul as the center, mostly from cultivated land and forest land. The area of wetland and cultivated land decreased by 776.71 km2707.32 km2 and 426.65 km2 respectively. Over the past 25 years, land cover changes in South Korea were mainly concentrated in areas with lower elevation (100m) and lower slope (3 掳). Human activity factors, such as population growth, urban expansion, Economic development and policy control are the main causes of land cover change in South Korea.
【作者单位】：中国科学院东北地理与农业生态研究所湿地生态与环境重点实验室;中国科学院大学;
【基金】：中国科学院重点部署项目课题(KZZD-EW-08-02)资助~~
【分类号】：F301.2;TP79

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