围栏封育对伊犁河谷天然林草地土壤水盐及pH空间变异的影响  

Effects of Fencing and Sealing on Spatial Variability of Soil Water Salinity and pH in Natural Forest Grassland in the Ili River Valley

作　　者：阴书晶 李艳红[1,2] 董晔 YIN Shujing;LI Yanhong;DONG Ye(College of Geography and Tourism,Xinjiang Normal University,Urumqi 830054,China;Key Laboratory of Xinjiang Uygur Autonomous Region,Laboratory of Lake Environment and Resources in Xinjiang Arid Area,Urumqi 830054,China;College of Business,Xinjiang Normal University,Urumqi 830017,China)

机构地区：[1]新疆师范大学地理科学与旅游学院,乌鲁木齐830054 [2]新疆维吾尔自治区重点实验室,新疆干旱区湖泊环境与资源实验室,乌鲁木齐830054 [3]新疆师范大学商学院,乌鲁木齐830017

出　　处：《河南科学》2025年第3期398-408,共11页Henan Science

基　　金：第三次新疆综合科学考察项目(2021xjkk040301)。

摘　　要：掌握不同管理措施下天然植被土壤水盐及pH的空间分布规律可以有效控制植被退化、促进生态修复。本研究利用经典统计学、地统计学及克里金插值法对比分析了围栏与非围栏伊犁河谷天然植被土壤含水量、盐分和pH值的空间变异特征。结果表明:围栏封育后林草地土壤含水量显著提高,变异系数为79%和85%,具有较强的空间相关性,主要受结构性因素和随机性因素共同影响。围栏封育对土壤盐分的影响较显著,围栏内林草地土壤盐分空间自相关性较强,变异系数均大于100%,空间变异主要由结构性因素引起,围栏外林草地土壤盐分高值区面积较大,围栏措施有效地抑制了盐分表聚。河谷林草地土壤呈现出一定程度的碱化趋势;围栏内土壤呈碱性且相对稳定,围栏内高于围栏外;围栏外天然植被pH值的空间变异主要受结构性因素影响,围栏内草地则主要由结构性和随机性因素共同引起。Understanding the spatial distribution patterns of soil moisture,salinity,and pH under different management practices is crucial for effectively controlling degradation and promoting vegetation restoration.This study employs classical statistics,geostatistics,and Kriging interpolation to compare and analyze the spatial variability of soil moisture,salinity,and pH in fenced and unfenced natural vegetation areas in the Ili River Valley.The results indicate that soil moisture in fenced forest and grassland areas significantly increased,with coefficients of variation of 79%and 85%,exhibiting strong spatial correlation primarily influenced by both structural and random factors.The impact of fencing on soil salinity was substantial,with strong spatial autocorrelation in fenced areas.The coefficients of variation exceeded 100%,and spatial variability was mainly driven by structural factors.Unfenced areas showed larger high-value regions of soil salinity,whereas fencing effectively mitigated surface salt accumulation.There was a noticeable trend towards soil alkalization in the river valley’s forest and grassland areas;soil within fenced areas was alkaline and relatively stable,higher than that outside fenced areas.The spatial variability of pH in unfenced natural vegetation was mainly influenced by structural factors,while in fenced areas,it was affected by both structural and random factors.

关 键 词：伊犁河谷 围栏封育 土壤水盐 空间变异 

分 类 号：K901[历史地理—人文地理学]