自然资源学报 ›› 2018, Vol. 33 ›› Issue (8): 1363-1375.doi: 10.31497/zrzyxb.20170730

• 资源生态 • 上一篇    下一篇

三峡库区社区水平乡村路网对森林景观变化的影响

曹飞1, 邵景安1,2,*, 马雪莹1, 李春梅1, 杜建平1, 蒋佳佳1, 强丹阳1   

  1. 1. 重庆师范大学地理与旅游学院,重庆400047;
    2. 三峡库区地表过程与环境遥感重庆市重点实验室,重庆400047
  • 收稿日期:2017-07-21 修回日期:2017-09-29 出版日期:2018-08-20 发布日期:2018-08-20
  • 通讯作者: 邵景安(1976- ),男,汉族,安徽亳州人,博士,研究员,主要从事土地利用与生态过程研究。E-mail: shao_ja2003@sohu.com
  • 作者简介:曹飞(1992- ),男,甘肃庆阳人,硕士研究生,主要从事资源环境与城乡规划研究。E-mail: 446177581@qq.com
  • 基金资助:
    国家科技支撑计划课题(2015BAD07B04);2016年重庆高校创新团队建设计划(CXTDX201601017)

The Effects of Rural Road Network on Forest Landscape Change at Community Level in the Three Gorges Reservoir Area

CAO Fei1, SHAO Jing-an1,2, MA Xue-ying1, LI Chun-mei1, DU Jian-ping1, JIANG Jia-jia1, QIANG Dan-yang1   

  1. 1. College of Geographical and Tourism, Chongqing Normal University, Chongqing 400047, China;
    2. Key Laboratory of Surface Process and Environment Remote Sensing in the Three Gorges Reservoir Area, Chongqing 400047, China
  • Received:2017-07-21 Revised:2017-09-29 Online:2018-08-20 Published:2018-08-20
  • Supported by:
    Key Projects in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period, No. 2015BAD07B04;Chongqing University Innovation Team for 2016, No. CXTDX201601017

摘要: 人为扰动是短时空尺度内森林景观变化或用途转换的主要动力,而乡村路网则成为人为扰动拓展的主要通道。基于1992、2002、2014年三峡库区重庆市石柱县西沱镇3期遥感影像和实地调研数据,在ArcGIS平台支持下,研究社区水平乡村路网对森林景观变化的影响。结果表明:1)1992—2014年研究区乡村路网影响域内次生林、退化林地和耕地的动态变化较显著,集中分布在中西部平坦区。1992—2002年乡村路网缓冲区内森林景观整体呈退化趋势,退化类型以次生林→退化林地、次生林→耕地、退化林地→耕地为主,演化量达1 705.91 hm2;2002—2014年乡村路网缓冲区内森林景观主要呈恢复趋势,恢复类型以耕地→退化林地、耕地→次生林、退化林地→次生林和原始林→退化原始林为主,演化量达1 674.52 hm2。2)相比发现,前一时期研究区乡村路网长度的增加和路网材质的提升很大程度上驱动森林景观的退化,而后一时期低等级路段的消失、废弃或利用率的降低则有助于森林景观的恢复,消失路段恢复率近100%。3)研究有助于丰富人们对社区水平乡村路网影响森林景观变化的理解与认识,为生态文明建设中合理规划乡村路网提供科学依据。

关键词: 三峡库区, 森林景观变化, 社区水平, 乡村路网变化

Abstract: Human disturbance is considered as the main driving force of forest landscape evolution and forest use conversion in term, and roads are the basis of human disturbance. This paper selected Xituo Town of Shizhu County in the Three Gorges Reservoir Area as an example and analyzed the effects of rural road network change on degradation-restoration of forest landscape in ArcGIS based on 3-phase remote sensing images and investigated data. The results showed: 1) Primary forest, secondary forest, degraded forest and cultivate land degraded significantly in areas affected by road network during 1992-2014. The overall forest landscape in road buffer areas degraded in 1992-2002. The forest landscape evolution had three main types: from secondary forest to degraded forest, from secondary forest to cultivate land, and from degraded forest to cultivate land. The forest landscape degraded by road network mainly distributed in the central and western regions, and the total area reached 1 705.91 hm2. The forest landscape in road buffer area showed a trend of recovery during 2002-2014 except in small part of areas. In this period, the forest landscape evolution had four main types: from cultivate land to degraded forest, from cultivate land to secondary forest, from degraded forest to secondary forest, and from primary forest to degraded primary forest. The recovery mainly happened in the central and western regions, and the degradation mainly distributed in the south of Fangdou Mountain and urban expansion area, the total area of evolution being 1 674.52 hm2. 2) Comparison between the evolution during 1992-2002 and 2002-2014 shows the increase of road mileages and the improvement of the quality of the new roads aggravated the degradation of forest landscape in the former period and the disappearance of low-level roads recovered the forest landscape in the later period. 3) The study would help people understand the effects of rural road network change on degradation-restoration of forest landscape at the community level and provide a scientific basis for the rational planning of rural road network and eco-economic coordinated development in the forest landscape restoration.

Key words: community level, forest landscape change, rural road network evolution, Three Gorges Reservoir Area

中图分类号: 

  • S718.5