ABSTRACT: At the study area of Xigu District in Lanzhou City, using RS & GIS as tools we apply Diversity, Dominance, Fragmentation , Isolation and so on to study the quantitative, fractal and spatial characters of...ABSTRACT: At the study area of Xigu District in Lanzhou City, using RS & GIS as tools we apply Diversity, Dominance, Fragmentation , Isolation and so on to study the quantitative, fractal and spatial characters of landscapes’ structures in the four sub-regions divided by the morphological features. Using the Fractal Theory to establish the fractal structure models, we analyze the complexity and stability of various landscapes’ distribution with fractal dimension value. The spatial distribution characteristics of landscape mosaic structure are also expounded. At the end of the paper we discuss the relevant problems on the main factors which control and effect on the spatial pattern of landscapes as well as on landscape optimization and management.展开更多
Based on the concepts of landscape ecology and landscape heterogeneity, this paper concludes that the spatial and temporal heterogeneity in ecological systems is the kernel of landscape ecology. From views of structur...Based on the concepts of landscape ecology and landscape heterogeneity, this paper concludes that the spatial and temporal heterogeneity in ecological systems is the kernel of landscape ecology. From views of structure, function and dynamics, the concepts and ecological significance of the spatial and temporal heterogeneity of landscape as well as its roles and applications in landscape ecology are reviewed. Finally, the characteristics of hierarchy and scale, and the effects of human on the landscape heterogeneity are discussed.展开更多
基金Under the auspices of the National Natural Science Foundationof China(No. 40171069).
文摘ABSTRACT: At the study area of Xigu District in Lanzhou City, using RS & GIS as tools we apply Diversity, Dominance, Fragmentation , Isolation and so on to study the quantitative, fractal and spatial characters of landscapes’ structures in the four sub-regions divided by the morphological features. Using the Fractal Theory to establish the fractal structure models, we analyze the complexity and stability of various landscapes’ distribution with fractal dimension value. The spatial distribution characteristics of landscape mosaic structure are also expounded. At the end of the paper we discuss the relevant problems on the main factors which control and effect on the spatial pattern of landscapes as well as on landscape optimization and management.
文摘Based on the concepts of landscape ecology and landscape heterogeneity, this paper concludes that the spatial and temporal heterogeneity in ecological systems is the kernel of landscape ecology. From views of structure, function and dynamics, the concepts and ecological significance of the spatial and temporal heterogeneity of landscape as well as its roles and applications in landscape ecology are reviewed. Finally, the characteristics of hierarchy and scale, and the effects of human on the landscape heterogeneity are discussed.
