4种林木幼苗含水率与生物量的关系研究

摘要

对杉木、马尾松、木荷、米槠幼苗不同构件的含水率与生物量关系进行研究。结果表明：树种、构件对含水率均有显著影响(p马尾松>米槠>木荷；杉木叶与茎、根、全株各构件之间含水率存在显著差异(p0.05)；针叶树种杉木、马尾松各构件及全株平均含水率均为根含水率最大，叶含水率最小。而阔叶树种木荷、米槠各构件及全株平均含水率大小次序则略有不同，最大的仍为根含水率，最小则为茎含水率。针叶树的含水率与生物量关系较为紧密，但阔叶树含水率与生物量关系则因植物种不同而相差较大。%The relationship between moisture content biomass of Cunninghamia lanceolata,Pinus massoniana,Schima superba and Castanopsis carlesii was studied.The results showed thattree species and organs both had significant effect on moisture content(pPinus massoniana>Castanopsis carlesii>Schima superba.For Cunninghamia lanceolata,moisture content of leaves had a significant difference with that of stems、root、whole-plant(p0.05).The organs’moisture content of Cunninghamia lanceolata and Pinus massoniana of coniferous seedlings showed roots moisture content was largest,leaves moisture content was minimum. The organs’ moisture content of Schima superba and Castanopsis carlesii of broad-leaved seedlings had different sequence,roots moisture content was also largest and stems moisture content was minimum.The moisture content of coniferous seedlings had a close relationship with biomass,however,the relationship between moisture content of broad-leaved seedlings and biomass depends on different plant species.