昌吉州平原区土地利用时空变化及驱动因素分析
Analysis of spatial and temporal changes and driving factors of land use in Changji Prefecture Plain
康平山 1吴彬 1高凡 1杜明亮 1王翠 1曹伟2
作者信息
- 1. 新疆农业大学水利与土木工程学院,新疆乌鲁木齐 830052;新疆水利工程安全与水灾害防治重点实验室,新疆乌鲁木齐 830052
- 2. 新疆维吾尔自治区水资源中心,新疆乌鲁木齐 830000
- 折叠
摘要
为保障昌吉州生态环境安全与可持续发展,基于2005～2020 年4 期土地利用遥感数据,运用土地利用动态度、转移矩阵、标准差椭圆及主成分分析等方法,对昌吉州平原区近15a土地利用时空变化特征及驱动因素进行了分析.结果表明:耕地和草地是研究区主要土地利用类型,分别占研究区面积的 40.27%～52.03%和32.77%～37.0%;2005～2020 年研究区耕地和建设用地呈增加趋势,林地、草地、水域和未利用地呈减少趋势;2005～2010 年土地利用类型相互转化最为剧烈,综合土地利用动态度达到最大,为1.85%;2005～2020 年土地利用转移方向主要表现为草地、未利用地转变为耕地以及未利用地转变为草地;耕地重心发生明显变化,西段耕地重心呈现东北向西南方向迁移,东段耕地重心呈现东南向西北方向迁移,其中,2005～2010 年耕地重心迁移距离最大;研究区土地利用变化的主要驱动因素是社会经济因素,自然因素对其影响相对不大.
Abstract
To guarantee the ecological environment security and sustainable development of Changji Prefecture,based on the 4-period land use remote sensing data from 2005 to 2020,the spatial and temporal change characteristics and driving factors of land use in the plain area of Changji Prefecture in the past 15 years were analyzed by using the land use dynamic attitude,transfer matrix,standard deviation ellipse,and principal component analysis.The results showed that:arable land and grassland were the main land use types in the study area,accounting for 40.27%～52.03%and 32.77%～37.00%of the study area respectively;arable land and construction land in the study area showed an increasing trend from 2005 to 2020,and forest land,grassland,wa-ters and unutilized land showed a decreasing trend;the mutual transformation among land use types from 2005 to 2010 hit the strongest level with a maximum motivation degree of 1.85%;from 2005 to 2020,the direction of land use transfer was mainly manifested in the transformation of grassland,unused land into cropland and unused land into grassland;the center of gravity of cropland changed significantly.The concentrated area of cultivated land in the western section showed migration from northeast to southwest,and the concentrated area of cultivated land in the eastern section showed migration from southeast to northwest,during which the concentrated area of cultivated land in 2005～2010 had the largest migration distance;the main driving factors of land use change in the study area were socio-economic factors,and the influence of natural factors on it was relatively insignificant.
关键词
土地利用/驱动因素/土地利用动态度/转移距阵/标准差椭圆/昌吉州平原区Key words
land use/driving factors/land use dynamic attitude/transfer matrix/standard deviation ellipse/Changji Prefec-ture Plain引用本文复制引用
基金项目
新疆维吾尔自治区自然科学基金项目(2021D01A99)
新疆维吾尔自治区"三农"骨干人才培养项目(2022SNGGGCC009)
第三次新疆综合科学考察项目(2021xjkk0203)
出版年
2024
国家科技期刊平台
NSTL
万方数据