干旱区地理2025，Vol.48Issue(4)：649-660,12.DOI:10.12118/j.issn.1000-6060.2024.242
贺兰山东麓绿洲多层次土壤水分亏缺及其影响因素的时空分析
Spatio-temporal analysis of multi-layered soil moisture deficit and its influencing factors in the oases at the eastern foothill of Helan Mountains
摘要
Abstract
In the oases at the eastern foothill of Helan Mountains,Ningxia,China,known as the"Jiangnan on the Frontier",soil moisture is a critical limiting factor affecting ecological preservation and high-quality socio-eco-nomic development.Based on soil moisture data from ten layers(0-100 cm),multidimensional analyses were con-ducted on the spatiotemporal distribution,evolution characteristics,and influencing factors of soil moisture defi-cit in this region using methods such as spatiotemporal trend analysis and partial regression analysis.This ap-proach enhances the understanding of the correlation and interactive effects of soil moisture changes at different depths.The results indicated that the degree of soil moisture deficit in various layers had intensified over the past 20 years.As soil depth increased,soil moisture in the northern and southern oases exhibited distinct multidimen-sional spatial distribution patterns:deficit-surplus-deficit-surplus-deficit and deficit-surplus-deficit,respectively.Additionally,they followed spatiotemporal evolution trends of wetting-drying-wetting and wetting-drying.The in-fluences of precipitation(PRE)and vapor pressure deficit(VPD)on soil moisture across different layers gradual-ly weakened,while the influence of temperature(TMP)first strengthened and then weakened,and the influence of the normalized difference vegetation index(NDVI)gradually increased.In summary,soil moisture at different depths and its influencing factors exhibited regular and multidimensional spatiotemporal variation patterns.The 0-10 cm layer was strongly positively influenced by PRE,whereas the 10-30 cm and 30-100 cm layers were sig-nificantly negatively affected by TMP and NDVI,respectively.关键词
标准化土壤水分指数/土壤水分亏缺/时空变化/多维结构/贺兰山东麓绿洲Key words
standardized soil moisture index/soil moisture deficit/spatio-temporal variability/multidimension-al structure/oases at the eastern foothill of Helan Mountains引用本文复制引用
侯迎,刘雯惠,褚阳,马小娟,姚诗雨,倪同欣..贺兰山东麓绿洲多层次土壤水分亏缺及其影响因素的时空分析[J].干旱区地理,2025,48(4):649-660,12.基金项目
宁夏自然科学基金项目(2024AAC05041) （2024AAC05041）
国家自然科学基金项目(42161008)资助 （42161008）
