for the same soil layer, acid soil nitrogen content of each component and the relative content of the absolute size of the order were: unknown acidolysis N> amino acid N >ammoniacal N >amino sugar N.

• 对于相同土层，土壤酸解氮中各组分绝对含量和相对含量的大小排列顺序均为：酸解未知态氮>氨基酸态氮>氨态氮>氨基糖态氮。