摘要
通过空间网格采样的格局指数在景观水平上定量并图示化分析了成都市绕城高速以内区域的城市景观格局特征和城乡景观格局差异。结果表明,成都市的圈层式发展特点能够通过空间采样的格局指数进行量化,并且不同的指数从不同的方面表现了成都市景观格局在城乡梯度上的差异。除表现景观形状特征的指数不太规则外,在城乡梯度上平均斑块面积、斑块密度、边缘密度以及聚集度均表现出逐渐上升或下降的单调变化趋势,而最大斑块指数、分割度和Shannon多样性指数均由于城乡交错带的影响表现出非单调变化趋势。
Combining spatial lattice sampling with landscape pattern indices, the paper analyzes and illustrates the spatial pattern of the whole expressway rounding area in Chengdu, Sichuan, China. Resuits of the circling distributed index values indicate that the development of Chengdu city follows the concentric zone theory, and different indices represent different aspects of the landscape pattern along the urban-rural gradient. Except the irregular variation of the patch shape, mean patch size, patch density, edge density and contagion show ascending or descending monotonic trends at the urban-rural gradient, and the largest patch index, division and Shannon＇s diversity index all have non-monotonic trends for the unique characteristics of landscape pattern at the urban-rural ecotone.
出处
《四川农业大学学报》
CSCD
2007年第3期316-321,共6页
Journal of Sichuan Agricultural University
基金
国家"十一五"科技支撑项目(2006BAC01A11)
教育部重点学科博士点基金(20050626001)
四川省教育厅重点实验室项目(2006ZD006)。
关键词
城市景观
城市化
景观格局
景观指数
空间采样
梯度分析
urban landscape
urbanization
landscape pattern
landscape indices
spatial sampling
gradient analysis
