森林与环境学报2026，Vol.46Issue(3)：287-296,10.DOI:10.13324/j.cnki.jfcf.202511001
暖温带典型林分不同分解阶段凋落物的持水特征
Water-holding characteristics of litter in typical forest stands in the warm temperate zone
摘要
Abstract
To investigate the water-holding characteristics of litter at different decomposition stages in typical forest stands in the warm temperate zone and their hydrological regulation functions,this study selected four forest stands(Pinus armandii-P.tabuliformis coniferous mixed forest,Quercus wutaishanica conifer-broadleaf mixed forest,P.tabuliformis pure forest,and P.tabuliformis conifer-broadleaf mixed forest)in the Zhongtiao Mountains of Shanxi Province.Litter stock was measured for each stand,and the indoor water immersion method was adopted to analyze the water-holding capacity of litter at different decomposition stages.The results showed that:the total litter stock ranged from 24.46 to 37.93 t·hm-2,and the fully-decomposed layer was dominant in all forest stands(>36%).The total litter stock in the P.armandii-P.tabuliformis coniferous mixed forest and P.tabuliformis pure forest was higher than that in the Q.wutaishanica conifer-broadleaf mixed forest and P.tabuliformis conifer-broadleaf mixed forest(P<0.05).Both the maximum water-holding rate and water absorption rate generally followed the pattern of fresh layer>semi-decomposed layer>fully-decomposed layer.Among the four forest stands,the Q.wutaishanica conifer-broadleaf mixed forest exhibited better overall water-holding performance.Water-holding capacity increased logarithmically with time,whereas water absorption rate decreased as a power function with time.The fitted models showed high goodness of fit(R2>0.91),well describing the dynamic variation processes.Total effective retention of litter ranged from 14.87 to 24.57 t·hm-2,with average retention rates of 57.83%to 77.38%.The total effective retention volume was the highest in the P.tabuliformis pure forest,while the average effective interception rate of Q.wutaishanica conifer-broadleaf mixed forest is the highest.There were differences in overall hydrological regulation performance among different forest stands,with the conifer-broadleaf mixed forest showing better performance.Maintaining a thick and structurally intact litter layer and optimizing the configuration of conifer-broadleaf mixed forests can enhance water conservation and hydrological regulation functions in the Zhongtiao Mountains.关键词
暖温带/中条山/凋落物/持水特性/针阔混交林/针叶林/水源涵养Key words
warm temperate zone/Zhongtiao Mountains/litter/water-holding characteristics/conifer-broadleaf mixed forest/coniferous forest/water conservation分类
农业科技引用本文复制引用
李涵茜,王海燕,宁一泓,李凌,高文强,陈晓东..暖温带典型林分不同分解阶段凋落物的持水特征[J].森林与环境学报,2026,46(3):287-296,10.基金项目
"十四五"国家重点研发计划项目"华北地区用材林立地和林分质量智能化评价技术集成"(2024YFD2201001)、"多种生态系统服务与生物多样性协同提升的综合森林管理模式示范"(2023YFE0112805). （2024YFD2201001）
