内蒙古河套灌区土壤性质空间变异性分析——以解放闸灌域和永济灌域为例  

Spatial variability of soil properties in Hetao Irrigation Area of Inner Mongolia:A case study of Jiefangzha Irrigation Section and Yongji Irrigation Section

作　　者：李焕弟 李江[1,2] 刘永 朱婷 万核洋 齐泓玮 LI Huandi;LI Jiang;LIU Yong;ZHU Ting;WAN Heyang;QI Hongwei(College of Agricultural Science and Engineering,Hohai University,Nanjing 211000,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;Jinhua Survey and Design Institute of Water Conservancy and Hydropower Co.,Ltd.,Jinhua 321000,China)

机构地区：[1]河海大学农业科学与工程学院,江苏南京211000 [2]清华大学水沙科学与水利水电工程国家重点实验室,北京100084 [3]金华市水利水电勘测设计院有限公司,浙江金华321000

出　　处：《水资源与水工程学报》2021年第6期215-221,共7页Journal of Water Resources and Water Engineering

基　　金：国家自然科学基金项目(52009030);清华大学水沙科学水利水电工程国家重点实验室及宁夏银川水联网数字治水联合研究院联合开放研究基金项目(sklhse-2020-Iow02);中央高校基本科研业务费专项项目(B210202120)。

摘　　要：以河套灌区解放闸灌域和永济灌域中的田间土壤粒径、含水率及电导率为研究对象,探究灌域土壤性质的空间变异性。对研究区田间土壤进行采样,运用经典统计学与地统计学方法对土壤性质的空间变异性和分布规律进行研究。结果表明:研究区内土壤粒径、含水率、电导率的变异系数介于10%~100%之间,属于中度变异;研究区内土质以壤土和粉砂壤土为主,占研究区总面积的72%~76%,秋季土质多样性高于春季;不同土壤质地下含水率和电导率的空间变异性不同,其中壤土的土壤含水率空间变化最大,壤土和粉砂壤土的电导率空间变化最大。解放闸灌域和永济灌域土壤性质的空间变异程度为中等变异。To explore the spatial variability of soil properties in Hetao Irrigation Area,the field soil particle size,water content and electrical conductivity in Jiefangzha Irrigation Section and Yongji Irrigation Section were studied.Based on field soil data,the conventional statistical method and geostatistics method were used to analyze the spatial variation and distribution of soil properties.The results show that the variation coefficients of soil particle size,water content and electrical conductivity in the study area ranges from 10%to 100%,which is classified as moderate variation.The study area is dominated by loam and silt loam,accounting 72%-76%of the total area,and the soil diversity in autumn is slightly higher than that in spring.The spatial variability of soil water content and electrical conductivity are different in different soil textures,among which the spatial variability of water content in loam is the largest,and that of electrical conductivity in loam and silt loam are the largest.Based on the analysis,the spatial variability of soil properties in Jiefangzha Irrigation Section and Yongji Irrigation Section are recognized as moderate.

关 键 词：土壤质地 土壤含水率 土壤电导率 空间变异 解放闸灌域 永济灌域 

分 类 号：S152[农业科学—土壤学]