福建师范大学学报（自然科学版）2026，Vol.42Issue(1)：72-79,8.DOI:10.12046/j.issn.1000-5277.2025090027
杉木不同套种模式对土壤氮素及反硝化作用的影响
Effects of Different Interplanting Patterns of Chinese Fir on Soil Nitrogen and Denitrification
摘要
Abstract
Interplanting patterns of Cunninghamia lanceolata(CL)plantations exert significant impacts on soil nitrogen cycling in forests.This study selected the interplanting of C.lanceolata with Phoebe bournei(PB),Taxus wallichiana(TW),as well as the simultaneous interplanting with P.bournei and T.wallichiana,to investigate the effects of different interplanting patterns on soil nitrogen and denitrification.The results showed that compared with C.lanceolata monocultures,the CL×TW treatment significantly decreased soil ammonium nitrogen,total carbon,and total nitrogen contents;the CL×PB×TW treatment significantly increased soil nitrate nitrogen and total nitrogen contents.Compared to C.lanceolata monocultures,potential denitrification rates increased by 37.13%in the CL×PB treatment,while they decreased by 59.10%in the CL×TW treatment.Dif-ferent interplanting patterns showed significant differences in the abundance of the nirK gene.Ran-dom forest analysis indicated that microbial biomass carbon,microbial biomass nitrogen,ammoni-um nitrogen,total carbon contents and the abundance of the narG gene were the primary limiting factors for soil potential denitrification rates.In conclusion,the simultaneous interplanting with Phoebe bournei and Taxus wallichiana in Chinese fir plantations is conducive to the accumulation of nitrogen in the forest soil,which provides a scientific reference for nitrogen management and sus-tainable management of Chinese fir plantations.关键词
杉木/套种/土壤养分/反硝化潜势/功能基因丰度Key words
Chinese fir/interplanting/soil nutrients/potential denitrification rate/abun-dance of functional genes分类
农业科技引用本文复制引用
邵雅琪,施秀珍,王子晴,冯鼎,江子怡,耿文迪,王建青..杉木不同套种模式对土壤氮素及反硝化作用的影响[J].福建师范大学学报（自然科学版）,2026,42(1):72-79,8.基金项目
国家自然科学基金面上项目(32071631) （32071631）
福建省自然科学基金项目(2023J06024、2024J09029、2023R1002004) （2023J06024、2024J09029、2023R1002004）
