西南林业大学学报2025，Vol.45Issue(1)：96-105,10.DOI:10.11929/j.swfu.202310058
林分密度对伏牛山南麓山茱萸人工林林下草本植物多样性和土壤性质的影响
Effect of Stand Density on Understory Herb Diversity and Soil Properties in the Cornus officinalis Plantation at the Southern Foot of Funiu Mountain
摘要
Abstract
Using the typical plot method,5 plots of Cornus officinalis were set up in each of the 5 stand dens-ities(535,715,895,1030 and 1250 plants/hm2)at the southern foot of Funiu Mountain.The species and height of understory herb were investigated,soil physicochemical properties were measured,and differences in various in-dicators were tested under different densities.The results showed that the stand density had a significant impact on the composition and diversity of understory herb in the C.officinalis plantation.The dominant species rapidly transformed with the density increased.The dominant species at densities 535 and 715 plants/hm2 were Poly-gonum nepalense,while at densities 895,1030 and 1250 plants/hm2 were Pilea japonica,Amphicarpaea edge-worthii,and Acalypha supera,respectively.The species similarity coefficient between different densities showed a decreasing trend with the density difference increased,with a maximum of 0.70 and a minimum of 0.47.The un-derstory herb diversity showed a trend of first increasing and then decreasing with the increase of stand density,and reached the highest value in the density 715 plants/hm2.The total soil porosity,field capacity,saturated water content,organic matter,total nitrogen,alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus,total potassium,and available potassium content showed a similar changing trend with the diversity of herbaceous plants according to the stand density,reaching the maximum value at the medium and low densities of 715 or 895 plants/hm2.The comprehensive scoring results showed that the density of 715 plants/hm2 had the highest score,followed by the densities of 895,535,1030,and 1250 plants/hm2.The study suggested that the stand density of 715 plants/hm2 was the optimal density for C.officinalis plantation,as it could better enhance the diversity of herbaceous plants under the forest and improve the soil physical and chemical properties.关键词
林分密度/山茱萸人工林/林下植被/物种多样性/土壤理化性质Key words
stand density/Cornus officinalisplantation/undergrowth vegetation/species diversity/soil physicochemical property分类
农业科技引用本文复制引用
张慧,燕怡帆,朱雅,陈玉婷,王菁华,崔志鹏,杨迪,任学敏..林分密度对伏牛山南麓山茱萸人工林林下草本植物多样性和土壤性质的影响[J].西南林业大学学报,2025,45(1):96-105,10.基金项目
河南省科技厅科技攻关项目(232102111024)资助 （232102111024）
国家自然科学基金项目(31401307)资助. （31401307）
