青钩栲和杉木人工林生产力的比较

A Comparison between the Biomass Productivity of Castanopsis kawakamii Plantation and that of Cunninghamia lanceolata Plantation

通过对26 a生青钩栲与杉木人工林生长和生物量测定,进行青钩栲和杉木人工林生产力的比较研究。结果表明:青钩栲人工林单株材积为0.229 3 m3.hm-2,比杉木人工林高14.76%,但其林分蓄积量小于杉木林;青钩栲林分生物量为148.59 t.hm-2,是杉木人工林的1.13倍;其干、枝、叶和根的生物量均高于杉木林,可见青钩栲人工林的林分结构比杉木林更有利于林分光合产物的积累,表明青钩栲是一种生长迅速的阔叶树种。

Based on the investigation of stand growth, biomass, structure and productivity, this paper makes a comparison of the biomass productivity of Castanopsis kawakamii plantation and Cunninghamia lanceolata plantation. The results have shown as follows： The single-tree volume of Castanopsis kawakamii plantation is 0.2293 m^3·hm^-2, higher by 14.76% than that of Chinese fir plantation. The stand hiomass of Castanopsis kawakamii plantation is 148.59 t·hm^-2, 1.13 times as much as that of Chinese fir plantation. Therefore it growing tree species. is shown that the Castanopsis kawakamii is a fastgrowing tree species.