摘要
为评价贵州省普定县不同立地条件下杉木人工林水源涵养能力,结合CNRDS数据库的相关数据,构建多重中介效应模型,分析不同立地条件对杉木人工林水源涵养能力自变量、中介变量、因变量的影响。结果表明,不同立地条件下,坡度<15°、海拔(1200 m)和林分密度(650株/hm^(2))可保持良好的杉木人工林水源涵养能力;杉木人工林水源涵养能力对中介变量降水截留、地表径流、气候因素、土壤条件、枯枝落叶层、生物多样性均产生间接影响。
To evaluate the water conservation capacity of Cunninghamia lanceolata plantations under different site conditions in Puding County of Guizhou Province,a multiple mediation effect model was constructed by integrating relevant data from the CNRDS database.This model was used to analyze the effects of different site conditions on the independent variables,mediating variables,and dependent variables related to the water conservation capacity.The results indicated that under different site conditions,a slope<15°,an altitude of 1200 m,and a stand density of 650 trees/hm^(2) contributed to maintaining a favorable water conservation capacity in C.lanceolata plantations.The water conservation capacity of C.lanceolata plantations indirectly influenced mediating variables including precipitation interception,surface runoff,climatic factors,soil conditions,litter layer,and biodiversity.
作者
勾承馥
刘蔓
GOU Chengfu;LIU Man(Forestry Bureau of Puding County,Anshun,Guizhou 562100,China)
出处
《林业调查规划》
2026年第1期153-159,共7页
Forest Inventory and Planning
关键词
水源涵养能力
杉木人工林
立地条件
多重中介效应模型
water conservation capacity
Cunninghamia lanceolata plantation
site conditions
multiple mediation effect model
