应用生态学报2013，Vol.24Issue(8)：2265-2273,9.
动态空气动力学参数对玉米田陆-气通量模拟的影响——以BATSle模型为例
Effects of dynamic aerodynamic parameters on simulating the land-atmosphere flux exchange in maize field: A case study of BATSle model
摘要
Abstract
Based on the continuous observations on the land-atmosphere flux exchange and the meteorological and biological elements in a maize field at the Jinzhou Agricultural Ecosystem Research Station in Liaoning Province of Northeast China from 2006 to 2008,and by using the dynamic roughness (z0) and zero-displacement (d) parameterization scheme considering the effects of leaf area index,canopy height and wind speed at different developmental stages of maize,the BATS1 e model was modified,and applied to investigate the effects of dynamic aerodynamic parameters on the flux exchange between maize agroecosystem and atmosphere.Compared with the original model,the drag coefficient (CD) simulated by the modified model increased,and its diurnal variation was more obvious with increasing vegetation coverage,which was more accordant with practical circumstances.The simulation accuracies of sensible heat (H),latent heat (λE) and soil heat flux were improved in varying degree,and the Nash-Sutcliffes (NSs) were increased by 0.0569,0.0194 and 0.0384,with the improvement quantities in the growth season being 0.9％,1.1％ and 1.2％ of global radiation,respectively.The dynamic parameterizations of z0 and d played a more remarkable role to increase the simulation accuracies of H and λE with the actual observation of soil water content introduced into the improved model.This research proved that more reasonable dynamic aerodynamic parameterizations could fulfill an obvious function to improve the land surface processes simulation.关键词
空气动力学参数/陆-气通量模拟/玉米农田/BATS1e模型Key words
aerodynamic parameter/land-atmosphere flux simulation/cornfield/BATS1 e model分类
农业科技引用本文复制引用
蔡福,明惠青,李荣平,周广胜..动态空气动力学参数对玉米田陆-气通量模拟的影响——以BATSle模型为例[J].应用生态学报,2013,24(8):2265-2273,9.基金项目
中央级公益性科研院所专项资金项目(2012IAE-CMA01)、国家重点基础研究发展计划项目(2010CB951303)和青年科学基金项目(31000230)资助. （2012IAE-CMA01）
