土地利用转型下的西安市景观格局演变特征及驱动力分析
Analysis of the Evolution Characteristics and Driving Forces of Xi'an Landscape Pattern under the Transformation of Land Use
胡远东 1诸葛名名1
作者信息
- 1. 东北林业大学 园林学院,黑龙江 哈尔滨 150040
- 折叠
摘要
为揭示 1990-2020 年来西安市土地利用与景观格局的时空演变规律,以 1990 年、2000 年、2010 年和2020年土地利用数据为基础,借助 ArcGIS10.8和Fragstats4.2等软件对其进行分析.结果表明:(1)1990-2020年,土地利用变化显著,耕地面积持续减少,草地面积先减后增整体呈现下降趋势,随着城市的不断发展,建设用地大面积占用了耕地,使耕地面积逐步缩小,且其他用地类型也均向建设用地转变;(2)在不同的景观类型之间,存在着明显的迁移现象,它们的空间聚集程度减小,破碎度增强,形状变得更为复杂,景观优势度减小,异质性增加;(3)景观格局演变的主要驱动因素是社会经济发展、农业生产和政策导向,其中,社会经济发展是耕地向建设用地转化的主要驱动力,政策因素是引起林地和耕地发生转移的根本原因.
Abstract
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.
关键词
土地利用转型/景观格局/演变特征/驱动力/主成分分析Key words
land use transition/landscape pattern/evolutionary characteristics/driving force/principal component analysis引用本文复制引用
基金项目
黑龙江省重点研发计划指导类项目(GZ20220117)
出版年
2024
NETL
NSTL
维普
万方数据