The Investigation of Spatiotemporal Patterns of Landscape Fragmentation
during Rapid Urbanization in Changsha City
HONG Hong-jia 1,2, PENG Xiao-chun 1, CHEN Zhi-liang 1 , ZHANG Xing-xing 1,2, Liu Qiang 1,2
(1.South China Institute of Environmental Sciences, Ministry of Environmental Protection of China, Guangzhou 510655, China; 2.Hunan Agricultural University, Changsha 410128, China)
Abstract：Based on Remote Sensing and GIS, this paper quantified the landscape fragmentation of Changsha city by using landscape pattern metrics such as patch density, edge density, mean patch fractal dimension, landscape contagion index and Shannon diversity index. To reflect the spatial change in landscape fragmentation from the extent of human influence on the environment, the authors selected two transects in the orientation from north to south (N-S,40 km×8 km) and from west to east (W-E, 40 km×8 km) through Changsha’s spatial gravity center. Eight concentric areas with different radii from Changsha’s spatial gravity center were also selected to analyze the temporal change in landscape fragmentation. The results show that the spatial gravity center has moved 2.45 km in east-southeast direction for about 75°. The outward expansion of the construction land in the form of concentric zone model has a great impact on the landscape pattern of the suburbs. The study of urban-to-rural transects has also showed that the agglomeration effects in urban areas are obvious. In contrast to the city center, fragmentation of landscape has been increasing and spatial heterogeneity has been changing dramatically in suburban areas.
洪鸿加, 彭晓春, 陈志良, 张杏杏, 刘强. 长沙市景观破碎化时空分异特征研究[J]. 国土资源遥感, 2011, 23(1): 133-137.
HONG Hong-Jia, PENG Xiao-Chun, CHEN Zhi-Liang, ZHANG Xing-Xing, LIU Qiang. The Investigation of Spatiotemporal Patterns of Landscape Fragmentation
during Rapid Urbanization in Changsha City. REMOTE SENSING FOR LAND & RESOURCES, 2011, 23(1): 133-137.
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2011, Vol. 23 
