内蒙古大青山白茬子沟小流域典型森林植被的冠层降水再分配特征  

Canopy Precipitation Redistribution of Typical Forest Vegetation in Baichazigou Watershed,Daqing Mountains of Inner Mongolia

作　　者：王云霓[1,2] 王晓江 高孝威[1,2] 李卓凡 

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]内蒙古大青山森林生态系统国家定位观测研究站,内蒙古呼和浩特010010

出　　处：《内蒙古林业科技》2017年第4期6-9,共4页Journal of Inner Mongolia Forestry Science and Technology

基　　金：内蒙古自治区自然科学基金项目(2017BS0312);内蒙古自治区科技厅重大专项"不同生态类型区域生态监测与评估及风险预测技术研究"资助

摘　　要：利用生长季观测的降雨数据,分析了内蒙古大青山白茬子沟小流域白桦次生林和华北落叶松人工林林冠降雨截留、穿透雨及树干径流与降雨量的关系,以及降雨林冠截留过程的特征。结果表明:两种林分林冠截留量与降雨量的关系吻合对数回归模型;穿透雨量、树干径流量与降雨量均呈明显的一元线性关系,穿透雨量和树干径流量均随着降雨量的增加而增加。不同林分的林冠截留量、穿透雨量和树干径流量的月动态变化与总降水量的月变化基本一致;林内穿透雨率超过73%,冠层截留率9.81%~26.22%,树干径流0.72%~9.10%。Based on the rainfall data in growing season,the features of canopy interception and the relations among precipitation and canopy interception,throughfall and stem flow of secondary forest of Betula platyphylla and Larix principis-rupprechtii plantation in Baichazigou Watershed,Daqing Mountains of Inner Mongolia have been analyzed. The results show that the relations between canopy interception of two kinds of stands and rainfall fit the logarithmic regression model. The throughfall,stem flow and rainfall show an obvious one-dimensional linear relationship,which the throughfall and stem flow have increased with the increasing of rainfall. The monthly dynamic change of canopy interception,throughfall and stem flow in different stands has been consistent with the one of total precipitation basically. The throughfall rate in forest is over 73%,the canopy interception rate ranges from 9. 81% to 26. 22%,and the stem flow ranges from 0. 72% to 9. 10%.

关 键 词：华北落叶松人工林 白桦次生林 林冠截留 穿透雨 树干径流 

分 类 号：S718.51[农业科学—林学] S761.3