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陆雇百通骨与各小块求公定通佣卜所得的结果有一定的误差(如马赛克法) 。