杉木(Cunninghamia lanceolata)在我国南方各省栽培历史悠久,它生长快,材质好,在林业生产和国民经济建设中都占有重要位置。近年来冯宗炜等对杉木速生阶段和干材阶段林分的生物产量和养分循环进行了大量的研究,但对杉木老龄林研究得较少。为此,我们在湖南省会同县林区对其为数不多的杉木老龄林的生物生产力和营养元素含量进行了研究。 Cunninghamia lanceolata has a long history of cultivation in the provinces of southern China. It grows fast and has good materials, occupying an important position in both forestry production and national economic construction. In recent years, Feng Zongwei et al. Conducted a great deal of researches on the biological yield and nutrient cycling of Chinese fir fast-growing stage and dry-wood stage, but less studied on Chinese fir plantations. To this end, we conducted a study on the biological productivity and nutrient content of a small number of Chinese fir aged stands in the forest area of ​​Huitong County, Hunan Province.