水土保持研究2025，Vol.32Issue(4)：100-109,10.DOI:10.13869/j.cnki.rswc.2025.04.045
典型工矿区小流域土壤阳离子交换量空间分布及其影响因素
Spatial distribution of soil cation exchange capacity and its influencing factors in small watersheds of typical industrial and mining area
摘要
Abstract
[Objective]This paper aims to explore the spatial distribution characteristics of soil cation exchange capacity(CEC)and its primary influencing factors in small watersheds of typical area in the southern Taihang Mountains,and to enhance the efficiency of soil fertility cultivation and environmental quality assessment.[Methods]Based on classical statistics,geostatistics,geodetectors,and other models,the current characteristics,differentiation patterns,and influencing factors of soil CEC in the surface layer(0-20 cm)of the Mang River small watershed were studied.[Results](1)The soil CEC in the Mang River small watershed ranged from 8.23 to 30.28 cmol/kg,with an average of 16.20 cmol/kg,indicating a relatively high level and strong soil fertility retention capacity.The spatial variability was moderate.(2)The spatial distribution of soil CEC was primarily influenced by structural factors such as topography and landforms.When the distance was less than 3 130 m,its distribution showed continuity with spatial autocorrelation.Significant variations in soil CEC were observed in different directions,with more pronounced spatial variability along the east-west(90°)and northeast-southwest(45°)directions.(3)The spatial interpolation based on empirical Bayesian kriging achieved higher accuracy,which could better reflect the spatial distribution characteristics of soil CEC in the study area.The soil CEC showed a zonal decreasing trend from southwest to northeast,with high values in the low mountain and hilly areas of the southwest and low values in the piedmont plain and central plain areas of the northeast.The spatial distribution was consistent with the regional topography and landforms.(4)Structural factors such as slope and aspect exhibited the strongest explanatory power for the spatial distribution differences of soil CEC within the watershed.Additionally,the distribution of industrial and mining enterprises,land use,and atmospheric deposition had a significant impact on the spatial distribution of soil CEC.[Conclusion]Soil CEC is a key indicator for improving soil environmental quality and pollution assessment.Strengthening research on the spatial differentiation patterns and influencing factors of soil CEC in the study area can provide theoretical basis and technical support for regional soil environmental protection and heavy metal pollution remediation.关键词
土壤/阳离子交换量/空间分布/影响因素/典型工矿区Key words
soil/cation exchange capacity/spatial distribution/influencing factors/typical industrial and mining areas分类
农业科技引用本文复制引用
张亚杰,余力,曹艳萍,马泉来,冯朝晖..典型工矿区小流域土壤阳离子交换量空间分布及其影响因素[J].水土保持研究,2025,32(4):100-109,10.基金项目
河南省科技攻关项目(232102321037) （232102321037）
国家自然科学基金项目(41701503) （41701503）
河南省软科学研究项目(252400411068) （252400411068）
