In both of the mix broad leaf sample and single oak leaf sample in the oak stand, N, P, K, Ca and Mg released (except N in mix broad leaf sample) during decomposition process.

• 落叶分解过程中营养元素残留量变化,蒙古栎纯阔叶、蒙古栎林混合落叶分解过程中N、P、K、Ca和Mg等无机养分元素都随分解而释放(除蒙古栎林混合落叶中N元素)。