基于FSAM模型的岳阳地区美洲黑杨人工林通量观测源区分布  

Source Area in-FLUX Measurements by FSAM Model over the Populus deltoides Plantation in Yueyang

作　　者：魏远[1] 高升华[1] 张旭东[1] 耿绍波[2] 赵晓松[3] 江泽平[1] 王云龙[4] 

机构地区：[1]中国林业科学研究院林业研究所国家林业局林木培育重点实验室,北京100091 [2]北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京100083 [3]中国科学院南京地理与湖泊研究所湖泊与环境国家重点实验室,南京210008 [4]南京信息工程大学,南京210044

出　　处：《林业科学》2012年第2期16-21,共6页Scientia Silvae Sinicae

基　　金：国家"十一五"科技支撑资助项目(2006BAD03A15)

摘　　要：基于岳阳市通量观测塔2006年全年观测数据,应用FSAM模型,分析不同大气稳定度下该观测点通量信息的源区分布。结果表明:主风方向上(0°～90°),通量源区(P=0.9)迎风向(X向)上的分布范围在稳定大气条件下为110～3500m,而在非稳定大气条件下为90～1800m;3个非主风方向上(90°～180°,180°～270°和270°～360°)通量源区(P=0.9)迎风向(X向)上的分布范围在稳定大气条件下以180°～270°最大,为110～4500m,而在非稳定大气条件下3者相当,为90～1800m;主风方向上,相同大气条件下,生长季的通量源区略大于非生长季的通量源区,且生长季和非生长季的通量源区在不稳定大气条件下都比稳定大气条件下小;通量观测结果能代表仪器所在地的下垫面特征。Based on eddy flux data collected in a poplar plantation of Yueyang in 2006,the flux source area was calculated using the FSAM model according to the continuous flux measurement with an open-path eddy covariance system.The results showed that：In the prevailing wind direction（0°～90°）,the upwind range of flux source areas（P=0.9） was 110～3 500 m under stable air conditions,while it was 90～1 800 m under unstable air conditions.The range under stable air conditions in the direction of 180°～270°was 110～4 500 m,which was the largest of the three unprevailing wind directions,while under unstable air conditions,the ranges in the three directions were nearly the same（90～1 800 m）.In the prevailing wind direction,the source area changed with atmospheric stability and source areas in the growing season are larger than those in the dormant season under the same atmospheric condition.Because of the big fetch,the measurements were able to represent the specific characteristics of the instrument location。

关 键 词：FSAM 源区 美洲黑杨人工林 

分 类 号：S716.4[农业科学—林学] P412.16[天文地球—大气科学及气象学]