The new method is convenient for calculating the land surface turbulence flux over heterogeneous terrains . 2 . there is some error to calculate the factor flux by grid mean as compared with by each patch ( such as mosaic method ) 用要素的格元平均值直接求陸雇百通骨與各小塊求公定通傭卜所得的結果有一定的誤差(如馬賽克法) 。