title: [Impacts of road network on forest landscape pattern in Great Xing' an Mountains of Northeast China].
abstract: By characterizing the composition of road network in the Huzhong Forestry Bureau in Great Xing' an Mountains, Northeast China, we investigated the effects of road networks on landscape pattern by quantifying 1989 landscape pattern for each of the 17 forestry farms on maps with and without roads by principal component analysis (PCA). The results showed that road networks, including the main and secondary timber-transport roads, were distributed evenly among the observed 17 forestry farms with a density of 2.3 m x hm(-2) and spread along the river networks throughout each farm. The emergence of roads significantly altered the landscape pattern at the landscape level in each farm, which was characterized by landscape fragmentation involving a decline in patch area and an increase in patch number and distance among patches. Furthermore, no significant correlation was found between fragmentation and road density. The road network had more impact on fragmentation than on aggregation at the landscape level.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. liyh@iae.ac.cn
authors.forename: Yue-Hui
authors.initials: YH
authors.lastname: Li
authors.forename: Zhi-Feng
authors.initials: ZF
authors.lastname: Wu
authors.forename: Hong-Wei
authors.initials: HW
authors.lastname: Chen
authors.forename: Na-Na
authors.initials: NN
authors.lastname: Li
authors.forename: Yuan-Man
authors.initials: YM
authors.lastname: Hu
authors.forename: Yu
authors.initials: Y
authors.lastname: Chang
mesh_terms: D002681:China; D003247:Conservation of Natural Resources / Q000379:methods*; D017753:Ecosystem; D004779:Environment Design; D018986:Motor Vehicles; D014186:Transportation; D014197:Trees / Q000254:growth & development*