JOURNAL OF NATURAL RESOURCES ›› 2018, Vol. 33 ›› Issue (8): 1363-1375.doi: 10.31497/zrzyxb.20170730

• Resource Ecology • Previous Articles     Next Articles

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

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

CLC Number: 

  • S718.5