广西林业科学2026，Vol.55Issue(3)：245-254,10.DOI:10.19692/j.issn.1006-1126.20260303
基于植物多样性和土壤理化性质的马尾松混交林质量评价
Quality Evaluations of Pinus massoniana Mixed Plantations Based on Plant Diversity and Soil Physical and Chemical Properties
摘要
Abstract
In order to provide theoretical basis for improvement of low-quality and low-efficiency plantations of Pinus massoniana in Guangxi,taking mixed plantations of over-mature P.massoniana with Michelia macclurei,Mytilaria laosensis,Castanopsis hystrix and Xanthostemon chrysanthus as research objects,taking P.massoni-ana pure plantation as control,understory plant composition and diversity as well as soil physical and chemical properties in different mixed plantations were analyzed.Qualities of mixed plantations were comprehensively evaluated.Results showed that total number of understory plants in four mixed plantations were higher than that in P.massoniana pure plantation.Top three most important plants in shrub layer differed in four mixed planta-tions,while the most important plants in herb layer was consistently Dicranopteris linearis,but their importance values were lower than those in P.massoniana pure plantation.Margalef richness indexes of shrub layers in P.massoniana×M.macclurei and P.massoniana×M.laosensis mixed plantations were significantly higher than those in other plantations,and Shannon-Wiener indexes,Simpson indexes,Pielou evenness indexes and Mar-galef richness indexes of herb layers in these two mixed plantations were significantly higher than those in other plantations.In 0-20 cm soil layer,P.massoniana pure plantation had the highest soil bulk density and capil-lary porosity,while P.massoniana×M.laosensis mixed plantation had the highest total porosity.In 20-40 cm soil layer,P.massoniana×M.laosensis mixed plantation had the highest soil bulk density,while P.massoniana pure plantation had the highest capillary porosity and total porosity.In 0-20 and 20-40 cm soil layers,soil pH as well as contents of organic carbon,total nitrogen,total phosphorus and total potassium in four mixed planta-tions were higher than those in P.massoniana pure plantaion.There were no significant correlations among un-derstory plant diversity indexes and soil physical and chemical properties.Comprehensive evaluation of stand quality indicated that P.massoniana×M.macclurei and P.massoniana×C.hystrix mixed plantations were recom-mendable planting models for promotion.关键词
植物多样性/土壤理化性质/林分质量评价/混交林/马尾松Key words
plant diversity/soil physical and chemical properties/stand quality evaluation/mixed plantation/Pinus massoniana分类
农业科技引用本文复制引用
何仁聪,唐生森,李鹏,黄岳天,卢志邦,陈泳秀,颜培栋,陈虎,杨章旗..基于植物多样性和土壤理化性质的马尾松混交林质量评价[J].广西林业科学,2026,55(3):245-254,10.基金项目
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）
"十四五"重点研发项目子课题(2023YFF1304402-04,2023YFF130440501) （2023YFF1304402-04,2023YFF130440501）
广西八桂学者专项(2019A026) （2019A026）
