江西大岗山杉木人工林降雨截留特征及修正Gash模型的模拟  

Canopy Rainfall Interception Characteristics of Chinese Fir Forest and Its Revised Gash Model Simulation in Dagangshan Mountain of Jiangxi Province

作　　者：刘胜涛[1] 高鹏[1] 李肖[1] 牛香[2] 王兵[2] 

机构地区：[1]山东农业大学林学院,国家林业局泰山森林生态站,山东泰安271018 [2]中国林业科学研究院森林生态环境与保护研究所,北京100091

出　　处：《水土保持学报》2015年第2期172-176,共5页Journal of Soil and Water Conservation

基　　金：国家林业公益性行业专项(2014303-08);全国第八次山东省森林资源生态服务功能评估研究项目(201204101)

摘　　要：为研究杉木人工林降雨截留特征,选择江西大岗山国家森林生态系统定位研究站杉木人工林固定观测试验样地,对其大气降雨量、穿透雨量和树干茎流量进行定位观测,采用修正的Gash模型对其降雨截留过程进行模拟。结果表明,研究期间观测到的林外降雨量、穿透雨量、树干茎流量和林冠截留量分别为1289.5,955.2,57.1,277.2mm,模拟的穿透雨量、树干茎流量和林冠截留量分别为946.4,53.6,289.5mm,占降雨总量的73.4%,4.2%和22.4%,相对误差分别为1.0%,6.1%和4.4%。模拟结果和实测值具有很好的一致性,说明修正的Gash模型在江西大岗山杉木人工林降雨截留模拟应用中具有很好地适用性。For the research of the rainfall interception characteristics of Chinese fir forest,the atmospheric rainfall,the throughfall and the stemflow of the sample plots of Chinese fir forest were observed in the forest ecosystem research station of Dagangshan mountain of Jiangxi province,and the rainfall interception process was simulated by revised Gash model.The results showed that the atmospheric rainfall,the throughfall,the stemflow and the canopy interception were 1 289.5,955.2,57.1,277.2mm during the observation period.The simulated values of througfall,stemflow and canopy interception were 946.4,53.6,289.5mm,which accounted for 73.4%,4.2%and 22.4% of the atmospheric rainfall,and the relative error was 1.0%,6.1%and 4.4%,respectively.The good consistency of the simulated values and measured values indicated that the revised Gash model was suitable for estimating the rainfall interception of Chinese fir forest in Dagangshan mountain of Jiangxi province.

关 键 词：杉木人工林 林冠截留 修正的Gash模型 大岗山地区 

分 类 号：S791.27[农业科学—林木遗传育种]