摘要
Decompositiondynamicswerecomparedamonggreentreeleaves,partiallydecomposedtreeleaflitter(i.e.,decayedtreeleaflitteronforestfloor)andamixtureofthetwoinawarmtemperateforestecosystemincentralChinatotesttheinfluenceoflitterchemicalqualityonthedegreeofdecomposition.Thestudywasconductedinsituattwocontrastingforestsites,anoakforestdominatedbyQuercusalienavar.acuteserrataMaxim.,andamixedpineandoakforestdominatedbyPinusarmandiiFranch.andQ.alienavar.acuteserrata.Wefoundmarkeddifferencesintherateofdecompositionamonglittertypesatbothforestsites;thelitterdecompositionconstant,k,wasabout39%greaterattheoakforestsiteandmorethan70%greateratthepine-oakforestsite,forgreenleavesthanforpartiallydecomposedleaflitter.Thedecompositiondynamicsandtemporalchangesinlitterchemistryofthethreelittertypesalsogreatlydifferedbetweenthetwoforestsites.Atbothforestsites,thehigherrateofdecompositionforthegreenleaveswasassociatedwithahighernitrogen(N)contentandlowercarbontoNratio(C/N)andacid-unhydrolyzableresiduetoNratio(AUR/N).Wedidnotfindanynonadditiveeffectswhenmixinggreenleavesandpartiallydecomposedleaflitter.Ourfindingssupportthecontentionthatlitterchemicalqualityisoneofthemostimportantdeterminantsoflitterdecompositioninforestecosystemsatthelocalorregionalscale,buttheeffectoflitterchemicalqualityondecompositiondiffersbetweenthecontrastingforesttypesandmayvarywiththestageofdecomposition.
出版日期
2016年05月15日（中国期刊网平台首次上网日期，不代表论文的发表时间）
