摘要
绿洲的发展与水资源条件息息相关。研究西北干旱区绿洲与水资源生态制约的时空关系,对科学合理制定绿洲规划和开发方案具有重要意义。以天山北麓绿洲为例,在分析1976—2017年间绿洲扩张与水资源变化趋势的基础上,深入探究绿洲扩张与区域水资源时空关联性。结果表明:(1)1976—2017年,研究区绿洲面积增加52.33%,各时期扩张率为0.53%、7.25%、11.75%、26.44%,其中城乡建设用地和耕地面积分别增加610.33%和79.75%;(2)绿洲与降水量、河流径流量、地表水呈显著性相关,灰色关联度分别为0.9390、0.9065、0.9282;(3)河流水系的位置与走向决定了绿洲孕育位置与扩张方向,且绿洲重心与水域重心迁移路线相似;(4)绿洲面积占比与其距河流水域的距离成反比;(5)新垦绿洲的发展与地下水资源具有显著相关性。
The development of oasis is closely related to water resources.Studying the ecological constraints of temporal and spatial relationship between the oasis and water resources in the arid regions of Northwest China is of great significance for the scientific and rational formulation of oasis planning and development programs.Taking the oasis at the northern foot of Tianshan Mountains as an example,based on the analysis of the oasis expansion and the trend of water resources change from 1976 to 2017,the relationship between oasis expansion and regional water resources conditions was explored deeply.The results show that:(1)From 1976 to 2017,the oasis area increased by 52.33%,and the expansion rates in each period were 0.53%,7.25%,11.75%,and 26.44%,of which urban and rural construction land and cultivated land area increased by 610.33%and 79.75%,respectively.(2)Oasis is correlated with precipitation,river runoff,and surface water significantly,and the grey correlations are 0.9390,0.9065 and 0.9282,respectively.(3)The location and orientation of river systems determine the location and expansion direction of the oasis,and the migration route of the center of gravity of the oasis is similar to that of the waters area.(4)The proportion of oasis area is inversely proportional to its distance from the waters.(5)The development of the newly-reclaimed oasis has a significant correlation with groundwater resources.
作者
田春艳
徐丽萍
TIAN Chunyan;XU Liping(College of Science,Shihezi University,Shihezi,Xinjiang 832003,China)
出处
《石河子大学学报（自然科学版）》
CAS
北大核心
2020年第4期434-442,共9页
Journal of Shihezi University(Natural Science)
基金
国家自然科学基金项目(31760151)。
关键词
天山北麓
绿洲扩张
水资源
关联性
northern foot of Tianshan Mountains
oasis expansion
water resources
correlation
