摘要
Investigationswereconductedtoquantifylitterfall,andlitterandnutrientaccumulationinforestfloor,andtoacquireinformationonlitterdecompositionandnitrogenandphosphorusreleasepatternsinthreedifferentsubalpineconiferousforests,aplantation(Pl),asecondaryforest(SF),andaprimitiveforest(PF),inwesternSichuan,China.Thelittertrapmethodwasusedtoevaluatelitterfallwiththelitterbagmethodbeingutilizedforlitterdecomposition.Seasonalpatternsoflitterfallweresimilarinthethreeforests,withtwopeaksoccurringinSeptember-NovemberandMarch-May.Theplantationrevealedanannuallitterfallof4.38×103kgha-1,whichwassimilartothoseofSFandPF,butPlhadalowermasslossrateandahigherC/Nratio.TheC/Nratiomaybeasoundpredictorforthedecompositiondifferences.Nconcentrationsofleaflitterinboththesecondaryforestandprimitiveforestincreasedfirstandthendecreased,andthepercentagesoftheirfinal/initialvalueswere108.9%and99.9%,respectively.Pconcentrationinthethreeforestsincreasedbytheendofthestudy.TheresultsoflitterfallanddecompositionindicatedthatintheplantationthepotentialtoprovidenutrientsforsoilorganicmatterwassimilartothoseofSFandPF;however,itsslowerdecompositionratecouldresultinasomewhattransientaccumulationoflitterintheforestfloor.
出版日期
2006年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
