Analysis of the Evolution Characteristics and Driving Forces of Xi'an Landscape Pattern under the Transformation of Land Use
In order to reveal the spatiotemporal evolution of land use and landscape patterns in Xi'an from 1990 to 2020,analysis was conducted using ArcGIS10.8,Fragstats4.2 and other software based on the land use of data of 1990,2000,2010 and 2020.The results show that:(1)From 1990 to 2020,there were significant changes in land use,with a continuous decrease in arable land area,a decrease and then increase in grassland area showing an overall downward trend.With the continuous development of the city,the construction land occupied a large area of cultivated land,leading to a gradual reduction in arable land areas,and other land types were also transformed to construction land;(2)There are obvious migration phenomena among different landscape types,with a decrease in spatial aggregation,an increase in fragmentation,shapes becoming more complex,a decrease in landscape dominance,and an increase in heterogeneity;(3)The main driving factors for the evolution of landscape pattern are social and economic development,agricultural production and policy orientation.Among them,social and economic development is the main driving force for the transformation of cultivated land to construction land,and policy factors are the fundamental reasons for the transfer of forest land and cultivated land.
land use transitionlandscape patternevolutionary characteristicsdriving forceprincipal component analysis
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