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1、福建林学院学报2006,26(4):289-293JournalofFujianCollegeofForestry杉木连栽地上闽楠与杉木林分凋落物特征比较①1223陈爱玲,林思祖,陈世品,陈元镇(11福建农林大学资源与环境学院,福建福州350002;21福建农林大学林学院,福建福州350002;31福建林业职业技术学院,福建南平353000)摘要:通过对杉木多代连栽地轮栽闽楠后凋落物的特征研究1结果表明:闽楠林分的年凋落量-2比杉木多代连栽林(对照)增加了2262102kg·hm,两树种的凋落物年组成成分的变化规律基本一致,都以叶的凋落量为最大,其次是枝条,再次是
2、花果,第4是杂叶,第5是碎屑,最少的是杂枝1闽楠林凋落物的归还模式是主峰出现在4月份,占年凋落物总量的45137%,该月的凋落物组成以叶为主,占月凋落量的绝对量(93143%);而杉木多代连栽林则主峰出现在8月份,占年凋落物总量的48149%,该月的凋落物组成虽也以杉叶为主,但它只约占了月凋落量的一半(48135%),且杉木多代连栽林最大月的凋落量比闽楠林最大月的凋落量减少了-2900162kg·hm1凋落物的季节归还模式2种亦不同,闽楠林呈现出春季(50140%)>秋季(24119%)>夏季(23104%)>冬季(2137%),而杉木多代连栽林则呈现出秋季(53
3、106%)>春季(24107%)>夏季(15176%)>冬季(6148%)1关键词:杉木多代连栽;轮栽;闽楠;凋落物中图分类号:S71815文献标识码:A文章编号:1001-389X(2006)04-0289-05ComparisononlitterfallcharacterofPhoebebourneiandCunninghamialanceolataplantationinthefieldofsuccessiveplantingCunninghamialanceolata1223CHENAi2ling,LINSi2zu,CHENShi2pin,CHENYuan
4、2zhen(11CollegeofResourcesandEnvironment,FujianAgricultureandForestryUniversity,Fuzhou350002,China;21CollegeofForestry,FujianAgricultureandForestryUniversity,Fuzhou350002,China;31FujianForestryVocationalandTechnicalCollege,Nanping353000,China)Abstract:Thecharacteristicoflitterwasstudi
5、edintheforestofPhoebebourneiinthefiledaftersuccessiveplantingCunninghamia-2lanceolata1TheresultsshowedthattheannuallitterfallofP1bourneiforestwas2262102kg·hmwhichwasmorethanthatofthesuccessiveplantingforestofC1lanceolata(CK)1Thechanginglawofannuallitterofthetwokindsofforestsweresimila
6、r,namely,leafwasthelargest,nextbranch,flowermixedwithfruit,mixedleaf,thencrumb,andthelastwasmixedbranch1ThereturnpatternofP1bourneiforestwasthatmaximumlitterfallappearedinApril,accountingfor45137%ofthewholeyearlylitterfall,leafbeingthemainlitterandtakingthemostpercentage(93143%)ofluna
7、rlitterfall;ThatofsuccessiveplantingforestofC1lanceolatapresentedinAugust,accountingfor48149%ofthewholeyearlylitter,leafalsobeingthemainlitterbutonlytakingaboutthehalf-2(48135%)oflunarlitterfall1ThelargestlunarlitterfallquantityoftheforestofC1lanceolatawas900162kg·hmwhichwaslessthanth
8、atoft
