江西农业学报2025，Vol.37Issue(10)：48-55,8.DOI:10.19386/j.cnki.jxnyxb.2025.10.007
黑木相思对土壤肥力的影响效应及其机制研究进展
Research Progress in Effects and Mechanisms of Acacia melanoxylon on Soil Fertility
摘要
Abstract
This study systematically examines the differential impacts of A.melanoxylon and Eucalyptus plantations on soil fertility,with particular emphasis on their respective mechanisms in soil property modification,microbial community restructuring,and nutrient cycling efficiency.The results show that A.melanoxylon enhances soil organic matter accumulation and nitrogen-phosphorus cycling efficiency through synergistic rhizobial nitrogen fixation and litter input.Its mixed cultivation patterns elevate soil pH value and increase soil porosity,demonstrating superior soil structure modification.Compared to Eucalyptus monocultures,A.melanoxylon plantations significantly promote beneficial microbial proliferation and acid phosphatase activity,and exhibit stronger ecological adaptability in nutrient-deficient environments.The sustainable nutrient input system driven by biological nitrogen fixation,coupled carbon-nitrogen decomposition of litter,and root complementarity in mixed systems achieves significant improvement in soil nutrient turnover efficiency,effectively mitigating nutrient depletion in fast-growing plantations.This study constructs a"structure-process-function"theoretical framework for comparing the effects of A.melanoxylon and Eucalyptus plantations on soil fertility.The results provide scientific guidance for selecting Eucalyptus alternatives and optimizing mixed cultivation patterns in degraded subtropical forest restoration,while informing the transition towards ecologically sustainable plantation management.Future studies should prioritize quantifying the frost resistance ability of A.melanoxylon under low-temperature site conditions and the long-term stability of the mixed system,and determine its suitable site conditions and the optimal suitable habitats.关键词
黑木相思/桉树/土壤肥力/立地条件/适生区域Key words
Acacia melanoxylon/Eucalyptus/Soil fertility/Site condition/Suitable habitats分类
农业科技引用本文复制引用
贵昊宇,孙晓杰,周律相,赵文东,吴立潮..黑木相思对土壤肥力的影响效应及其机制研究进展[J].江西农业学报,2025,37(10):48-55,8.基金项目
中南林业科技大学校企科研合作项目"低质低效林免炼山黑木相思高效培育绿色经营技术开发"(LDKY202301). （LDKY202301）
