地理科学 ›› 2017, Vol. 37 ›› Issue (11): 1755-1763.doi: 10.13249/j.cnki.sgs.2017.11.018

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1990~2015年韩国土地覆被变化及其驱动因素

于皓1,2(), 张柏1(), 王宗明1, 任春颖1, 毛德华1, 贾明明1   

  1. 1.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,吉林 长春 130102
    2.中国科学院大学, 北京 100049
  • 收稿日期:2017-01-22 修回日期:2017-03-21 出版日期:2017-11-20 发布日期:2017-11-20
  • 作者简介:

    作者简介:于皓(1989-),女,吉林松原人,博士研究生,主要从事资源环境遥感研究。E-mail:yuhao@iga.ac.cn

  • 基金资助:
    中国科学院重点部署项目课题(KZZD-EW-08-02)资助

Land Cover Change and Its Driving Forces in the Republic of Korea Since the 1990s

Hao Yu1,2(), Bai Zhang1(), Zongming Wang1, Chunying Ren1, Dehua Mao1, Mingming Jia1   

  1. 1. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences,Changchun 130102, Jilin, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-01-22 Revised:2017-03-21 Online:2017-11-20 Published:2017-11-20
  • Supported by:
    The Key Research Program of the Chinese Academy of Sciences (KZZD-EW-08-02)

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。

关键词: 土地覆被变化, 驱动因素, Landsat遥感数据, 面向对象的图像分析方法(OBIA), 韩国

Abstract:

Studying the long-term changes of the terrestrial system of neighboring countries could be of great significance for the utilization of natural resources and environmental management in China. Based on Landsat TM/OLI images, the paper analyzed the characteristics of land cover change and their driving forces in 1990 and 2015 in the Republic of Korea (ROK) by using object-based images analysis (OBIA). The result shows artificial surface, forests, wetlands, cropland and waterbody underwent great changes from 1990 to 2015. Artificial surface had the greatest increase, 1847.24 km2 with an annual rate of 12.54%. The expansion of artificial surface was mainly located at Seoul economic circle, which was converted mainly by cropland and forests. The area of forests, wetlands and cropland decreased by 776.71 km2, 707.32 km2 and 426.65 km2 respectively. In the past 25 years, the land cover changes mainly occurred where the elevation is under 100 m and the slope is less than 3°. The human factors consisting of population growth, urban expansion, economic development and policy regulation and control played an important role in land cover changes in ROK. The achievements of this study could provide scientific basis for the protection and rational utilization of land resources in China, especially in the Northeast China.

Key words: land cover change (LCC), driving forces, landsat remote sensing, Object-based Images Analysis (OBIA), Republic of Korea (ROK)

中图分类号: 

  • TP79