摘要
[目的]针对内蒙古清水河县公益林区主要人工林地林下枯落物层水文效应展开研究,以期为今后黄土丘陵区水源涵养林建设以及防治水土流失等工作提供参考依据。[方法]以内蒙古清水河县公益林区内5种主要人工林地林下枯落物层为研究对象,采用野外实地调查取样和室内浸泡方法,利用SPSS 22.0软件对数据进行相关性检验以及线性回归分析。[结果](1)5种林型的枯落物层总蓄积量变动范围在8.49~25.52 t/hm^(2)之间,总体趋势与厚度表现基本一致。具体表现为:针阔混交林>油松林>落叶松林>山杏林>乔灌混交林;(2)5种林型总最大持水量变动范围为10.10~38.82 t/hm^(2),具体表现为:针阔混交林>山杏林>油松林>落叶松林>乔灌混交林;(3)5种林型总有效拦蓄量变动范围为8.58~36.97 t/hm^(2),总体趋势与最大拦蓄量一致,具体表现为:针阔混交林>山杏林>油松林>落叶松林>乔灌混交林;(4)5种林型枯落物层的动态持水过程大致可分为3个阶段,分别为快速吸水阶段(0.5—2 h),吸水减缓阶段(2—6 h),稳定(饱和)吸水阶段(6—24 h)。[结论]阔叶树种的枯落物层持水能力要强于针叶林种,5种林型中枯落物层水源涵养能力最佳的为针阔混交林。
[Objective]The hydrological effects of the litter layer under the main artificial forests in Qingshuihe County,Inner Mongolia Autonomous Region were studied in order to provide a reference for the construction of water conservation forests and for the prevention and control of soil erosion in the loess hilly area in the future.[Methods]The study location consisted of five main artificial forests at the public welfare forest area of Qingshuihe County,Inner Mongolia.The experimental methods were mainly field survey sampling and the indoor immersion method,with SPSS 22.0 software used to correlate the obtained data,test the data for significant differences due to forest type,and conduct linear regression analysis.[Results]①The total volume of the litter layer of the five forest types ranged from 8.49 t/ha to 25.52 t/ha,and the overall trend was basically consistent with the thickness performance.The specific performance followed the order of coniferous and broad-leaved mixed forest>Pinus tabuliformis forest>Larix gmelinii forest>Armeniaca sibirica forest>arbor-shrub mixed forest;②The total maximum water holding capacity of the five forest types ranged from 10.10 t/ha to 38.82 t/ha,and the specific performance followed the order of coniferous and broad-leaved mixed forest>A.sibirica forest>P.tabuliformis forest>L.gmelinii forest>arbor-shrub mixed forest;③The total effective storage capacity of the five forest types varied from 8.58 t/ha to 36.97 t/ha.The overall trend was consistent with the maximum storage capacity.The specific performance followed the order of mixed coniferous and broadleaf trees forest>A.sibirica forest>P.tabuliformis forest>L.gmelinii forest>arbor and shrub mixed forest;④The dynamic water holding process of the five forest types of litter layer could be roughly divided into three stages:the rapid water absorption stage(0.5—2 h);the slow water absorption stage(2—6 h);and the stable(saturated)water absorption stage(6—24 h).[Conclusion]The water-holding capacity of the litter layer of broad-leaved tree species is stronger than that of coniferous forest species.Among the five forest types,the litter layer water conservation capacity is the best in the coniferous and broad-leaved mixed forest.
作者
朱家晸
秦富仓
李龙
杨振奇
张若曦
Zhu Jiazheng;Qin Fucang;Li Long;Yang Zhenqi;Zhang Ruoxi(College of Desert Management,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018,China;Key Laboratory of State Forest Adminstration for Desert Ecosystem Protection and Restoration,Hohhot,Inner Mongolia 010000,China;Pastoral Science Research Institute of Ministry of Water Resources,Hohhot,Inner Mongolia 010018,China)
出处
《水土保持通报》
CSCD
北大核心
2022年第1期114-121,共8页
Bulletin of Soil and Water Conservation
基金
国家重点研发计划重点专项“清水河公益林综合效益监测”(GEF-NMG-201602)
内蒙古农业大学人才引进项目(NDYB2017-21)。
关键词
人工林地
枯落物
水文效应
混交林
内蒙古
plantation
litter
hydrological effect
mixed forest
Inner Mongolia
