农业资源与环境学报2025，Vol.42Issue(4)：834-843,10.DOI:10.13254/j.jare.2024.0333
古今黄河三角洲交接带耕地盐渍化空间变异及其驱动因素
Spatial variation and driving factors of cultivated land salinization in the transition zone of the ancient and modern Yellow River Delta
摘要
Abstract
In order to comprehensively analyze the spatial variation of salinity in cultivated land soil and its driving factors,this study took Lijin County,Dongying City,the transition zone of the ancient and modern Yellow River Delta,as the research area.Based on in-situ conductivity modeling,the soil salinity information of cultivated land survey sample points was obtained.Based on GIS and GMS spatial modeling technology,the spatial variation characteristics of soil salinization in cultivated land was analyzed from two-dimensional and three-dimensional perspectives.The index method was used to quantitatively evaluate the degree of soil salinization in cultivated land.The main driving factors of spring salinization were analyzed based on geographical detection method.The results showed that the average salt content of the surface soil of cultivated land in the study area in spring was 4.24 g·kg-1,with a median of 2.69 g·kg-1;the average pH value was 8.18,with a median of 8.22,indicating moderate salinization overall.In two-dimensional space,the spatial heterogeneity of salinization in the study area was significant,and the soil salt content in each layer showed a gradually increasing trend from south to north(from inland to offshore).In three-dimensional space,the overall salt content of cultivated land soil showed"surface aggregation"distribution characteristics,with local bottom aggregation and two-end aggregation types.The most serious area of salinization in the study area was mainly located in Tingluo Town in the north.The township(street)least affected by the salt disaster was Fenghuangcheng Street in the south of the study area and close to the Yellow River.The subsurface soil salt content is the main driving factor for soil salinization in cultivated land in the study area,and it has an important influence on the spatial distribution of soil salt content in spring through synergistic effect with other factors.关键词
土壤盐分/三维空间/变异特征/驱动因素Key words
soil salinity/three-dimensional space/variation characteristic/driving factor分类
农业科技引用本文复制引用
李金豫,高明秀,王佳凡,李沪波,方秀红,崔霞..古今黄河三角洲交接带耕地盐渍化空间变异及其驱动因素[J].农业资源与环境学报,2025,42(4):834-843,10.基金项目
山东省自然科学基金项目(ZR2021MD018)Natural Science Foundation of Shandong Province(ZR2021MD018) （ZR2021MD018）
