晋西黄土区刺槐人工林林冠截留模拟  

Simulation of canopy interception of Robinia pseudoacacia artificial forest on the Loess Plateau of West Shanxi Province

作　　者：王晓燕[1,2,3] 毕华兴[1,2,3] 高路博[1,2,3] 朱悦[1,2,3] 刘李霞[1,2,3] 

机构地区：[1]北京林业大学水土保持学院 [2]水土保持与荒漠化防治教育部重点实验室 [3]山西吉县森林生态系统国家野外科学观测研究站,北京100083

出　　处：《中国水土保持科学》2012年第2期44-49,共6页Science of Soil and Water Conservation

基　　金：国家自然科学基金“晋西黄土区森林植被对径流的影响及其尺度辨析”(30972419);林业公益性行业科研专项“典型森林植被对水资源形成过程的调控研究”(201104005)

摘　　要：为探讨晋西黄土区刺槐人工林生态水文过程和影响机制,以2007和2008年7—10月的19场降雨和气象及林分结构资料,用修正的Gash林冠截留模型,对刺槐人工林林冠截留进行模拟。结果表明:刺槐人工林林冠持水能力和树干持水能力分别为0.55和0.109 1 mm,使林冠达到饱和的降雨量为0.75 mm,使树干达到饱和所必需的降雨量为8.70 mm;修正的Gash模型可以较好地模拟晋西黄土区刺槐人工林的林冠累计截留量,林冠累计截留量相对误差最小值为0.76%,最大值为12.60%,平均林冠累计截留量相对误差为6.40%,林冠累计截留量模拟值小于实测值,截流率比实测值低2.64%。In order to explore the eco-hydrological processes of Robinia pseudoacacia artificial forest on the Loess Plateau of West Shanxi Province and its mechanism,in this paper,Revised Gash canopy interception model was applied to simulate the canopy interception amount based on the rainfall data and weather information of 19 events,and forest structure data from July to October in 2007 and 2008.Results showed that the canopy storage capacity and the stem storage capacity of Robinia pseudoacacia artificial forest was 0.55 mm and 0.109 1 mm.The amount of rainfall needed to saturate the canopy was 0.75 mm,The amount of rainfall needed to saturate the stem was 8.70 mm.Revised Gash model could better simulate accumulative amount of canopy interception of Robinia pseudoacacia artificial forest on the Loess Plateau.The minimum of relative error of accumulative amount of canopy interception was 0.76%,the maximum was 12.60%,and the average was 6.40%.The simulated values of accumulative amount of canopy interception was less than the measured value,and the rate of canopy interception is 2.64% lower than the measured values.

关 键 词：刺槐人工林 修正的Gash模型 林冠截留 晋西黄土区 

分 类 号：S792.27[农业科学—林木遗传育种]