女儿寨小流域3种植被类型林冠层对降水再分配研究  

Study on rainfall redistribution of canopy layer of three vegetation types in the small watershed of Nver Zhai

作　　者：罗佳[1,2] 田育新 周小玲[1,2] 曾掌权 姚敏[1,2] LUO Jia;TIAN Yuxin;ZHOU Xiaoling;ZENG Zhangquan;YAO Min(Hunan Academy of Forestry,Hunan Changsha 410004,China;Hunan Cili Forest Ecosystem State Research Station,Hunan Cili 427200,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]湖南慈利森林生态系统国家定位观测研究站,湖南慈利427200

出　　处：《生态科学》2019年第5期145-150,共6页Ecological Science

基　　金：湖南省重点研发计划(2017NK2223);湖南省林业科技计划项目(XLKPT201710);“十二五”农村领域国家科技计划课题(2015BAD07B04);国家重点研发计划“典型脆弱生态修复与保护研究”重点专项项目(2017YFC0505506);国家国际科技合作专项资助项目(2015DFA90450);湖南省林业科技项目(2012-HNLYKY-01);2017年森林生态效益补偿公共管护项目:基于生态连清的慈利县公益林生态效益监测评价

摘　　要：对女儿寨小流域3种植被类型林冠层林冠层对降水再分配过程进行了研究。研究结果表明:观测期内降雨量达到1971.80 mm,降雨次数为83次。不同植被类型杜仲林、枫樟混交林和马尾松林的林冠截留量分别为289.75 mm、358.78 mm和351.46 mm,林冠截留率分别为14.69%、18.19%和18.79%。随着降雨量增大,不同植被类型的林冠截留量也增大,二者呈正相关关系。混交林的穿透雨量和林冠截留量大于纯林,而纯林的树干茎流量大于混交林;不同植被类型林冠层对降雨的分配表现为穿透雨最多,其次是林冠截留,树干茎流最小。The rainfall redistribution process of canopy layer of three vegetation types in the small watershed of Nver Zhai was studied.During the observation period,the precipitation was up to 1971.80 mm,and the times of rainfalls were 83.The canopy interception of Eucommia ulmoides forest,Maple camphor mixed forest and Pinus massoniana forest were 289.75 mm,358.78 mm and 351.46 mm,respectively.In addition,the canopy interception rates of these three vegetation types were 14.69%,18.19%and 18.79%,respectively.There was a significant positive correlation between the two factors.The throughfall and canopy interception of mixed forests were greater than those of pure forests,while the trunk stem flow of pure forests was greater than mixed forests.The distribution of rainfall in canopy layer was the highest for different vegetation types following by canopy interception,and the trunk runoff was the minimum.

关 键 词：植被类型 降雨再分配 林冠层 小流域 

分 类 号：S715.2[农业科学—林学]