干旱区地理2026，Vol.49Issue(4)：868-879,12.DOI:10.12118/j.issn.1000-6060.2025.386
链谱视角下干旱海湾国家土地利用变化特征及驱动因子分析
Land use change characteristics and driving factors in arid gulf countries from the chain-spectrum perspective:A case of Qatar
摘要
Abstract
To comprehensively understand the spatiotemporal characteristics and dynamic mechanisms of land-use change and to provide decision-making references for the sustainable management of land resources,this study employed the land-use chain spectrum analysis method integrated with the Geodimeter model on the Google Earth Engine platform to investigate land-use change and its driving mechanisms in Qatar,a gulf country in arid regions.The key conclusions are as follows:From 1995 to 2020,land-use change in Qatar exhibited a re-duction in sandy land,continuous expansion of cultivated land and impervious surfaces,and a notable increase in the proportion of sparse vegetation and shrubland.Doha,the capital of Qatar,functioned as a"super expansion center"for impervious surfaces,with its development pattern transitioning from infill expansion to outward ex-pansion,while other port cities demonstrated an alternating expansion mode of infill and outward expansion.Irri-gated cultivated land constituted the primary type of cultivated land expansion,forming a dual-axis expansion pat-tern centered on the northeastern coast and extending toward the northwest and southwest.The expansion of eco-logical land was dominated by sparse vegetation and shrubland,with 1995-2000 and 2015-2020 serving as the key expansion periods.Spatially,a greening circular structure dominated by sparse vegetation,with the coastal zone as the core,was formed.Shrubland was distributed in clumps owing to resource constraints,with a more prominent agglomeration effect along the eastern coast.Land use change in Qatar exhibited a"dual-track mecha-nism"characterized by oil-and gas-economy-driven growth coupled with water resource constraints.Specifical-ly,during 1995-2005,population density served as the core driving force;however,after 2005,the driving mod-el shifted to an economic expansion pattern dominated by GDP and the nighttime light index,superimposed with the constraining effect of groundwater resources.For future development,it is essential to strengthen the coordi-nated development mechanism of"water resource constraint-economic transformation-ecological restoration"and to adopt water-saving technologies as the foundation for achieving a dynamic balance between urban expan-sion and ecological protection.关键词
土地利用/链谱协同/地理探测器/卡塔尔Key words
land use/chain-spectrum collaboration/geographical detector/Qatar引用本文复制引用
张志秀,马彩虹..链谱视角下干旱海湾国家土地利用变化特征及驱动因子分析[J].干旱区地理,2026,49(4):868-879,12.基金项目
宁夏自然科学基金项目(2024AAC02022,2024AAC03054) （2024AAC02022,2024AAC03054）
宁夏高等学校自然科学项目(NYG2024007)资助 （NYG2024007）
