Litter decomposition and initial nutrient content of major dominant tree species on coastal sandy areas
The objective of this study was to research the relationship between the initial chemical composition and its decomposition rates of the litter in 9 dominant species (Litsea glutinosa,Pinus elliottii,Casuarina equisetifolia,Pistacia chinensis,Anodendron affine,Sageretia thea,Ficus microcarpa,Bambusa stenostachya,Celtis sinensis) which are in the four different coastal forest communities in the southeast coast of China,so as to offer the reference for the coastal shelterbelt species selection and their reasonable match.Decomposition test was conducted by the litterbag method.The results showed as follows.(1) The litter decomposition rates of C.equisetifolia and P.elliottii were the lowest,the annual dry mass losses rates were 48.80％ and 46.00％,followed by L.glutinosa,P.chinensis,F.microcarpa,B.stenostachya,and C.sinensis,64.40％,76.80％,69.30％,74.60％,and 71.40％ respectively,while the litter decompose rates ofA.affine and S.thea were the highest,84.00％ and 81.40％ respectively.(2) The time that C.equisetifolia and P.elliottii's litter decomposition at 50％ and 95％ required the longest,1.0354,4.4750 and 1.1249,4.8617 years respectively,while A.affine and S.thea required the shortest time,0.3782,1.6347 and 0.4121,1.7810 years respectively.(3) The litter decomposition rates were significantly correlated with the initial N,P content and C/P,C/N ratio (P ＜ 0.05),but insignificantly correlated with C content and N/P ratio (P＞0.05).
国家科技期刊平台
NSTL
万方数据
维普
