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1、福建林學(xué)院學(xué)報(bào)2006,26(4):289-293JournalofFujianCollegeofForestry杉木連栽地上閩楠與杉木林分凋落物特征比較①1223陳愛(ài)玲,林思祖,陳世品,陳元鎮(zhèn)(11福建農(nóng)林大學(xué)資源與環(huán)境學(xué)院,福建福州350002;21福建農(nóng)林大學(xué)林學(xué)院,福建福州350002;31福建林業(yè)職業(yè)技術(shù)學(xué)院,福建南平353000)摘要:通過(guò)對(duì)杉木多代連栽地輪栽閩楠后凋落物的特征研究1結(jié)果表明:閩楠林分的年凋落量-2比杉木多代連栽林(對(duì)照)增加了2262102kg·hm,兩樹種的凋落物年組成成分的變化規(guī)律基本一致,都以葉的凋落量為最大,其次是枝條,再次是
2、花果,第4是雜葉,第5是碎屑,最少的是雜枝1閩楠林凋落物的歸還模式是主峰出現(xiàn)在4月份,占年凋落物總量的45137%,該月的凋落物組成以葉為主,占月凋落量的絕對(duì)量(93143%);而杉木多代連栽林則主峰出現(xiàn)在8月份,占年凋落物總量的48149%,該月的凋落物組成雖也以杉葉為主,但它只約占了月凋落量的一半(48135%),且杉木多代連栽林最大月的凋落量比閩楠林最大月的凋落量減少了-2900162kg·hm1凋落物的季節(jié)歸還模式2種亦不同,閩楠林呈現(xiàn)出春季(50140%)>秋季(24119%)>夏季(23104%)>冬季(2137%),而杉木多代連栽林則呈現(xiàn)出秋季(53
3、106%)>春季(24107%)>夏季(15176%)>冬季(6148%)1關(guān)鍵詞:杉木多代連栽;輪栽;閩楠;凋落物中圖分類號(hào):S71815文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):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
