森林与环境学报2025，Vol.45Issue(2)：147-156,10.DOI:10.13324/j.cnki.jfcf.202410010
不同海拔森林土壤的阳离子交换性能
Cation exchange properties of forest soil at different altitudes
摘要
Abstract
This study aims to explore the spatial characteristics and influencing factors of cation exchange properties of forest soil at different altitudes.The forest soil samples(0-20,20-40,40-60,60-80 cm,and 80-100 cm)at two altitudes(100 m and 400 m,marked as L1 and L2,respectively)were collected from the Guangdong Yangchun E'huangzhang Provincial Nature Reserve.The exchangeable base ions,cation exchange capacity(CEC),total exchangeable base(TEB),and base saturation(BS)of each soil sample were analyzed.The results showed that the CEC was in an order of L1>L2,first decreasing and then increasing with the increase in soil depth at both altitudes.Soil TEB and BS showed a trend of L2>L1.BS decreased gradually with the increase in soil depth at L1,while it increased gradually with the increase in soil depth at L2.The ratios of Ca2+to Mg2+content was lower than 5,indicating that the soil was at the risk of lacking calcium.The results of redundancy analysis showed that soil pH and total organic carbon had the highest contribution to the cation exchange capacity of soil samples at L1 and L2,respectively.In summary,the soil fertility in this study area is low and there is a risk of calcium deficiency.The soil at L2 demonstrates higher nutrient retention capacity and supply capacity,being more conducive to plant growth.The differences in temperature and precipitation caused by changes in altitude regulate the weathering and leaching rates and the organic matter turnover,thereby altering the cation exchange properties of the soil.关键词
热带北缘/广东阳春鹅凰嶂省级自然保护区/海拔/阳离子交换量/土壤肥力Key words
northern tropical margin/Guangdong Yangchun E'huangzhang Provincial Nature Reserve/altitude/cation exchange capacity/soil fertility分类
林学引用本文复制引用
顾晓娟,何至杭,林子湛,刘林云慧,苏梦,莫其锋..不同海拔森林土壤的阳离子交换性能[J].森林与环境学报,2025,45(2):147-156,10.基金项目
广东省林业生态监测网络平台建设项目"鹅凰嶂生态站运行与维护"(2023KYXM09) （2023KYXM09）
广东省基础与应用基础研究基金项目"热带北缘季雨林树木非结构性碳对高降雨的响应及调控机制"(2023A1515012129). （2023A1515012129）
