中南林业科技大学学报2025，Vol.45Issue(9)：50-58,9.DOI:10.14067/j.cnki.1673-923x.2025.09.006
低效松林坡位效应对林窗补植赤皮青冈幼树早期生长的影响
Slope position effect of inefficient pine forest and its effects on the early growth of replanted Cyclobalanopsis gilva saplings under forest gap
摘要
Abstract
[Objective]To provide a theoretical basis for the precise cultivation and management of inefficient pine forests by analyzing the effects of slope position on soil physicochemical properties and enzyme activities of inefficient pine forests and the early growth of replanted Cyclobalanopsis gilva saplings under inefficient pine forest gap.[Method]Soil of inefficient pine forest and replanting C.gilva saplings under inefficient pine forest gap of three slope positions:upper slope,medium slope and down slope,as the research object to explore the difference of slope positions on soil physicochemical properties,enzyme activities of inefficient pine forest,and the early growth of C.gilva saplings,then explore their relationship.[Result]The soil physicochemical properties and enzyme activities of inefficient pine forest at different slope positions show some differences,the nutrient status,the activities of urease and catalase of medium and down slope were significantly better than upper slope.There were significant differences in tree height and ground diameter of replanting C.gilva saplings under inefficient pine forest gap at different slope positions.The growth performance of saplings of medium and down slope was significantly better than upper slope.With the deepening of the soil layer of the same slope position,the soil bulk density gradually increased;the soil water content,nutrients and the enzyme activities gradually decreased.Mantel test analysis showed that there was a significant correlation between tree height and organic carbon,between ground diameter and soil bulk density,organic carbon and cellulase.Redundancy analysis showed that soil nitrogen,phosphorus and soil water content were the main factors affecting soil enzyme activities,total nitrogen and available phosphorus had the highest explanation rate for enzyme activities.[Conclusion]The site conditions such as soil physicochemical properties and enzyme activities in the medium and lower slopes are more conducive to the growth of replanted C.gilva saplings under inefficient pine forest gap,the soil nutrient status can be improved by fertilization on the upper slope with relatively poor site conditions,so as to better promote the growth of replanted trees under forest.关键词
坡位/土壤理化性质/土壤酶活性/低效松林/赤皮青冈Key words
slope position/soil physicochemical property/soil enzyme activity/inefficient pine forest/Cyclobalanopsis gilva分类
农业科技引用本文复制引用
杨伟,王晖,徐建斌,林昱堃,丁亚飞,黄盛怡,周志春,王斌..低效松林坡位效应对林窗补植赤皮青冈幼树早期生长的影响[J].中南林业科技大学学报,2025,45(9):50-58,9.基金项目
浙江省省院合作林业科技项目(2021SY04) （2021SY04）
国家重点研发计划课题项目(2023YFD2200902). （2023YFD2200902）
