新疆阿克苏河流域2005—2015年景观变化及驱动力分析

Analysis on Landscape Changes and Driving Factors in Akesu River Basin from in 2005—2015

为揭示2005—2015年新疆阿克苏河流域景观演变及其驱动因素利用2005—2015年3期Landsat卫星影像数据,构建了流域景观数据库.阐述了流域景观分布规律和阶段特征,并结合同期社会经济发展数据,采用主成分法探讨了其驱动因素.结果表明:近10 a来,流域耕地斑块朝向分散化、破碎化发展,斑块形状经历了较规则、不规则到规则的"∧"形变化,结构稳定性有所提高;流域建筑用地、草地、园地和水域的状态趋向平稳,形状逐渐规则化,整体结构稳定系数也有所提升;经济的发展、非农人口的增加和交通建设是导致建设用地扩张的重要因素.

In order to reveal the landscape evolution and driving factors in Akesu River Basin in the past 2005 - 2015, andserve the protection and restoration of river basin water resources and ecological environment better, the watershed land-scape database was constructed based on 3 Landsat satellite image data in 2005-2015. This paper expounds the distribu-tion law and stage characteristics of watershed landscape, combined with the data of social economic development in thesame period, and probes into the driving factors by using the principal component method. The results show that： in thepast 10 years, the patch of cultivated land in the river basin is developing towards decentralization and fragmentation, withthe shape of regular and irregular to regular “∧” change, improving the stability of the structure, the construction land,grassland, orchard and water area in the basin share stable state with improved structural stability, economy developmentand the increase of non-agricultural population and traffic construction are important factors leading to the expansion of con-struction land. The research results provide scientific and reliable data support for the sustainable development of water andsoil resources in Akesu River Basin.