Litterfall production, decomposition and nutrient use efficiency varies with tropical forest types in Xishuangbanna,SW China: a 10-year study

摘要

Litterfall production, decomposition and nutrient use efficiency in three different tropical forest ecosystems in SW China were studied for 10 years. Annual mean litterfall production in tropical seasonal forest (TSF) (9.47 ± 1.65 Mg ha~(-1)) was similar to that in man-made tropical forest (MTF) (9.23±1.29 Mg ha~(-1)) (P>0.05) but both were significantly lower than that in secondary tropical forest (STF) (12.96±l.71 Mg ha~(-1)) (P<0.05). The annual variation of litterfall was greater in TSF (17.4%, P<0.05) than in MTF (14.0%) or STF (13.2%). The annual mean decomposition rate of litterfall increased followed the order of MTFrn(2.72)