阿克苏灌区土地利用格局变化图谱及驱动力分析

利用地学信息图谱方法,以阿克苏灌区3期遥感影像(2006年、2010年、2015年)为基础,合成系列土地利用变化图谱,分析研究区土地利用格局变化规律,并对阿克苏灌区土地利用格局变化进行驱动力分析。结果表明:①2006—2010年,研究区耕地、园地和建设用地面积增加,林地、草地、水域和其他土地面积减少,其中耕地图谱单元增长最多,增加了149 868.54 hm²,主要来源于园地和其他土地;园地的增长速率最快,增长率高达43.08%;②2010—2015年,研究区园地和建设用地呈快速增加趋势,耕地、林地、草地、水域和其他土地面积呈缩减态势,其中园地图谱单元增长最多,增加了59 705.55 hm²,主要来源于耕地;建设用地增长速度最快,增长率高达300.50%;③经济、交通以及人口因素是引起阿克苏灌区建设用地规模快速扩张的主要驱动力。

Land Use Cover Change in Aksu River Irrigation Area: Graphic Analysis and Driving Forces

The law of land use cover change (LUCC) in Aksu irrigation area is investigated, and the driving forces of LUCC are examined by geo-informatics graphic analysis according to remotely sensed images in three periods (2006, 2010, and 2015). Conclusions are as follows: (1) From 2006 to 2010, the area of cultivated land, garden land and construction land increased, while woodland, grassland, waters and other land area decreased, among which cultivated land increased the largest, by 149 868.54 hm², mostly converted from garden land and other land; garden land increased the fastest, with a growth rate up to 43.08%. (2) From 2010 to 2015, the area of garden land and construction land displayed a rapid increase trend, while cultivated land, woodland, grassland, waters and other land area revealed a decreasing trend, among which garden land increased by 59 705.55 hm², which was the largest, mainly derived from cultivated land; the growth rate of construction land area was the largest, reaching 300.50%. (3) Economic, traffic and population were main driving forces for the rapid expansion of construction land in Aksu River irrigation area.