中国地理科学 ›› 2015, Vol. 25 ›› Issue (2): 184-197.doi: 10.1007/s11769-014-0671-8

• 论文 • 上一篇    下一篇

Spatio-temporal Pattern and Spatial Heterogeneity of Ecotones Based on Land Use Types of Southeastern Da Hinggan Mountains in China

YU Lingxue1,2, ZHANG Shuwen1, LIU Tingxiang3, TANG Junmei4, BU Kun1, YANG Jiuchun1   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Bureau of Land and Resources of Linyi City, Linyi 276000, China;
    4. Department of Geography and Environment Systems, University of Maryland, Baltimore County, Baltimore, MD 21250, USA
  • 收稿日期:2012-12-21 修回日期:2013-02-26 出版日期:2015-01-27 发布日期:2015-03-10
  • 通讯作者: ZHANG Shuwen E-mail:zhangshuwen@neigae.ac.cn
  • 基金资助:

    Under the auspices of ‘Strategic Priority Research Program—Climate Change: Carbon Budget and Relevant Issues' of Chinese Academy of Sciences (No. XDA05090310)

Spatio-temporal Pattern and Spatial Heterogeneity of Ecotones Based on Land Use Types of Southeastern Da Hinggan Mountains in China

YU Lingxue1,2, ZHANG Shuwen1, LIU Tingxiang3, TANG Junmei4, BU Kun1, YANG Jiuchun1   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Bureau of Land and Resources of Linyi City, Linyi 276000, China;
    4. Department of Geography and Environment Systems, University of Maryland, Baltimore County, Baltimore, MD 21250, USA
  • Received:2012-12-21 Revised:2013-02-26 Online:2015-01-27 Published:2015-03-10
  • Contact: ZHANG Shuwen E-mail:zhangshuwen@neigae.ac.cn
  • Supported by:

    Under the auspices of ‘Strategic Priority Research Program—Climate Change: Carbon Budget and Relevant Issues' of Chinese Academy of Sciences (No. XDA05090310)

摘要:

Ecotones have received great attention due to its critical function in energy flux, species harbor, global carbon sequestration, and land-atmosphere interaction. This study investigated land use pattern and spatial heterogeneity of the ecotones among agricultural land, forest land, and grassland of the southeastern Da Hinggan Mountains in the northeastern China. The change of these delineated ecotones under different slopes and aridity conditions was analyzed by two landscape indices, edge density (ED) and core area percentage of landscape (CPL), to explore the inter-linkage between spatial structure of ecotones and socioeconomic development and land mana­ge­ment. Specifically, the ecotones such as agriculture-forest (AF) ecotone, forest-grassland (FG) ecotone, and agriculture-forest- grassland (AFG) ecotone moved from the arid southeast to the humid northwest. The flat area with small slope is more edge-fragmented than the steep area since the ED decreases as the slope increases. The AF ecotone mostly found in the humid region is moving to more humid areas while the agriculture-grassland (AG) ecotone mostly found in the dry region is moving towards the drier region.

关键词: ecotones, core area percentage of landscape (CPL), edge density (ED), modified moving split window, land use pattern, spatial heterogeneity

Abstract:

Ecotones have received great attention due to its critical function in energy flux, species harbor, global carbon sequestration, and land-atmosphere interaction. This study investigated land use pattern and spatial heterogeneity of the ecotones among agricultural land, forest land, and grassland of the southeastern Da Hinggan Mountains in the northeastern China. The change of these delineated ecotones under different slopes and aridity conditions was analyzed by two landscape indices, edge density (ED) and core area percentage of landscape (CPL), to explore the inter-linkage between spatial structure of ecotones and socioeconomic development and land mana­ge­ment. Specifically, the ecotones such as agriculture-forest (AF) ecotone, forest-grassland (FG) ecotone, and agriculture-forest- grassland (AFG) ecotone moved from the arid southeast to the humid northwest. The flat area with small slope is more edge-fragmented than the steep area since the ED decreases as the slope increases. The AF ecotone mostly found in the humid region is moving to more humid areas while the agriculture-grassland (AG) ecotone mostly found in the dry region is moving towards the drier region.

Key words: ecotones, core area percentage of landscape (CPL), edge density (ED), modified moving split window, land use pattern, spatial heterogeneity