关键词: 道路, 森林景观, 生态效应, 将乐县

Abstract: [Objective] The aim of this study was to explore the influences of ecological process caused by roads, and to provide a scientific basis for protection and management of the regional ecosystems. [Method] Landscape was classified into 10 categories mainly according to their species composition of patches using forest resource inventory data of Jiangle county in 2010. Combined with a vectorized map of road network in the study area, landscape element information of areas within 100 m, 100-200 m, 200-500 m, 500-1 000 m and 1 000-2 000 m distance from different classes of roads was obtained respectively using method of buffer analysis by ArcGIS 10.0. The landscape metrics was calculated by Fragstats 3.4 program. Thus, gradient changes of land-scape patterns were analyzed and compared among different buffers of roads. [Results] The provincial road had the largest influence on non-forest land, while county and village road had the largest influence on coniferous plantation forest. With higher connectivity in landscape, the fragmentation degree in provincial road sides was lower than that in county and village road sides. Moreover, the values of lanscape indices, such as patch type, total edge and evenness increased with increasing road buffer distance, while the opposite was true for the trend of landscape fragmentation and agglomeration. [Conclusion] Landscape structure tended to be more affected in area less than 500 m distance from road and county and village road side. Effects of different grades of roads on landscape structure were significantly different within 200 m of road buffer zone.

Key words: road, forest landscape, ecological effect, Jiangle county