水土保持学报2017，Vol.31Issue(4)：320-324,344,6.DOI:10.13870/j.cnki.stbcxb.2017.04.050
湖南会同杉木人工林林冠截留特征及模拟
Characteristics and Simulation of Canopy Interception of Chinese Fir Plantations in Huitong, Hunan Province
摘要
Abstract
Based on the data of rainfall,throughfall,stemflow and climate at the Ⅱ watershed of Huitong National Field Station for Scientific Observation & Experiment for Chinese Fir Ecosystem in 2015,we analyzed the canopy interception characteristics of Chinese fir forest,and the driving forces,and also verified the applicability of the Gash (1995) model to simulate the canopy interception.The results showed that:(1) The rain frequency was the highest in May and the amount of rainfall was the highest in August.In the whole year,the short-time light rainfall was the main form of single rainfall;(2) Throughfall,stemflow and canopy interception were positively correlated with the rainfall;(3) Gash (1995) model simulated annual cumulative canopy interception was 235.62 mm,which was in good agreement with the measured values (254.16 mm);(4) The accuracy of Gash (1995) model was mainly affected by canopy saturation capacity(S),and the ratio of average evaporation rate ((E)) to average rainfall intensity((R)).In this study,the value S is reasonable,but the (E)/(R) remains further to be more accurate.关键词
杉木人工林/林冠截留/Gash(1995)模型Key words
Chinese fir plantation/canopy interception/Gash (1995) model分类
农业科技引用本文复制引用
段汝航,赵仲辉,项文化..湖南会同杉木人工林林冠截留特征及模拟[J].水土保持学报,2017,31(4):320-324,344,6.基金项目
国家自然科学基金重点项目(31290221) （31290221）
