Transfer analysis of land-use type gravity center based on Landsat data - A case study of Zhoushan, China

Abstract

Based on the Landsat images of 7-time phases from 1984 to 2016, this paper analyzes the center of gravity transfer of land types in Zhoushan City, China. The research shows that the center of gravity migration distances of construction land, forest land, water, tidal flats, cultivated land/grassland and bare land are 1.80km, 0.37km, 4.27km, 3.84km, 0.55km and 1.60km respectively. The construction land expands along the coastal plain of each island, leading to the gradual encroachment of cultivated land/grassland and the spatial distribution of cultivated land/grassland tends to be discrete. This study will provide data support for the rational decision-making of land resource management in Zhoushan City and promote the sustainable use of land resources.