广西林业科学2026，Vol.55Issue(3)：235-244,10.DOI:10.19692/j.issn.1006-1126.20260302
阔叶树种引入对低质低效马尾松林枯落物与土壤持水性能的影响
Effects of Broad-leaved Tree Species Introduction on Water-holding Capacities of Litter and Soil in Low-quality and Low-efficiency Pinus massoniana Plantations
摘要
Abstract
In order to investigat effects of introducing different broad-leaved tree species on water-holding ca-pacities of litter layers and soil layers in low-quality and low-efficioncy Pinus massoniana plantations,and provid scientific basis for construction and transformation of multi-layer coniferous-broadleaved mixed planta-tions as well as promotion of their water conservation functions,taking P.massoniana×Castanopsis hystrix(PCH),P.massoniana×Michelia macclurei(PMM),P.massoniana×Xanthostemon chrysanthus(PXC),P.masso-niana×Erythrophleum fordii(PEF)and P.massoniana×Mytilaria laosensis(PML)as research objects,taking P.massoniana pure plantation(Pnm)as control,variations in water-holding capacities of litter layers and soil lay-ers in different stands after mixed transformation were analyzed.Results showed that litter storages of undecom posed layers were higher than those of semi-decomposed layers in six stands.Total litter storage showed as PCH>PML>PXC>Pnm>PEF>PMM.Water-holding rate of litter layer was logarithmically related to immersion time,while water absorption rate was power-functional to immersion time.Maximum water-holding capacity,maxi-mum interception storage capacity and effective interception storage capacity of litter layer all showed as PCH>PXC>PML>Pnm>PMM>PEF.Maximum water-holding rate,capillary water-holding rate,non-capillary porosi-ty,total porosity,saturated water storage capacity and effective water storage capacity in 0-20 cm soil layer were the highest in PML stand,whereas effective water storage capacity and total effective water storage capaci-ty in 20-40 cm soil layer peaked in PCH stand.Stand comprehensive water storage capacity showed as PCH>PML>PEF>PXC>PMM>Pnm.Soil constituted core carrier that fulfilled water conservation functions of stands.It was recommended that C.hystrix could be preferentially intercropped,followed by M.laosensis,for transfor-mation of low-quality and low-efficiency P.massoniana plantations in Hongchaojiang reservoir area.关键词
持水性能/枯落物/土壤/低质低效马尾松林Key words
water-holding capacity/litter/soil/low-quality and low-efficiency Pinus massoniana plantation分类
农业科技引用本文复制引用
陆海燕,李鹏,陈卫国,陈虎,颜培栋,许雪曼,庞海恩,王子豪,杨章旗..阔叶树种引入对低质低效马尾松林枯落物与土壤持水性能的影响[J].广西林业科学,2026,55(3):235-244,10.基金项目
"十四五"重点研发项目子课题(2023YFF1304402-04,2023YFF130440501) （2023YFF1304402-04,2023YFF130440501）
广西自筹经费林业科技项目(桂林科研[2022ZC]第90号) （桂林科研[2022ZC]第90号）
