草业学报2025，Vol.34Issue(7)：54-68,15.DOI:10.11686/cyxb2024335
准噶尔盆地沙质荒漠草地土壤pH分布特征及其环境影响因素分析
Soil pH distribution characteristics and environmental factors influencing it in sandy desert grassland in the Junggar Basin
摘要
Abstract
The aim of this study was to explore the distribution characteristics of soil pH and the factors affecting it in sandy desert grassland in the Junggar Basin.First,136 sample plots were selected and established by a route survey combined with a typical sample plot layout,and the pH of soil samples collected from 0 to 100 cm depth in each plot was measured.Environmental factors such as temperature,vegetation cover,and species richness were determined,and meteorological data were collected.The factors affecting the spatial variation of soil pH were explored on the basis of the environmental and meteorological data and"3S"technology,using one-way ANOVA,geostatistical analysis,and geographical detectors drawing on a range of remote sensing data and analytical tools.The results showed the range of soil pH in each soil layer from 0 to 100 cm was 8.54-8.76,and the average value was 8.66.The soil pH showed an upward trend as the soil depth increased.The soil pH of the small arbor group(8.71)was 1.02 times that of the shrub group(8.54)and 1.01 times that of the subshrub group(8.59)(P<0.05).Analyses of soil pH distribution showed that alkaline soil(pH 7.5-8.5)was mainly distributed in the northern part of Jimunai County,the southern part of Fuhai County,and the northern part of Karamay City around the Junggar Basi,and strongly alkaline soil(pH>8.5)was mainly distributed in Fukang City,Hutubi County,Manas County,Fuyun County,and other areas.Semi-variance variation analysis showed that the nugget effect of the optimal model of soil pH in the 0-100 cm soil layer was 49.91%,indicating that its spatial variation was affected by both structural factors and random factors.Geographic detector analysis showed that the main environmental factors contributing to the spatial variation of soil pH were mean average temperature(0.159),vegetation coverage(0.152),snow water equivalent(0.085),root soil moisture(0.076),and species richness index(0.066).The results of this study add new information about the distribution of soil pH to the database for sandy desert grassland in Junggar Basin,and reveal the main factors contributing to variations in soil pH.These findings provide a theoretical basis for sandy desert management and ecological restoration.关键词
土壤pH/空间分布/沙质荒漠草地/准噶尔盆地/地理探测器Key words
soil pH/spatial distribution/sandy desert meadows/Junggar Basin/geographical detectors引用本文复制引用
敬一胜,郑丽,阿斯太肯·居力海提,孙宗玖,刘慧霞,迪达尔·比苏力旦,李美莎,周晨烨,周磊,于冰洁,李有政..准噶尔盆地沙质荒漠草地土壤pH分布特征及其环境影响因素分析[J].草业学报,2025,34(7):54-68,15.基金项目
新疆维吾尔自治区高校基本科研业务费(XJEDU2022J006)和新疆维吾尔自治区重点实验室开放课题(2022D04003)资助. （XJEDU2022J006）
