关键词: 多功能, 杉木生态公益林, 龄组, 差异性分析

Abstract: Ecological public-welfare Cunninghamia lanceolata forest of 3 age groups in Hunan Fushou State Forest Farm was taken as the research object.A total of 16 indicators in four aspects as soil and water conservation,conservation of headwaters,biodiversity,carbon sequestration and productivity.The analysis of multifunctional efficiency difference for 4 kinds of forest types was conducted.The results showed that in different age groups of ecological public-welfare Cunninghamia lanceolata forest,the diversity function of young forest species was minimum,there was no significant difference between middle-aged forest and near mature forest,and no significant difference between young forest and middle-aged forest in soil and water conservation and water conservation function,the near mature forest was highest,carbon sequestration function and the function of productivity were increased with increasing of the stand age,and there was significant difference.The main reasons of the low multifunctional efficiency of ecological public-welfare Cunninghamia lanceolata forest were the low species richness,single stand structure and low biomass.As the guide of the nature forest sustainable management,stand structure should be optimized improvement thinning carried out on the stand regularly,Castanopsis sclerophylla,Michelia maudiae and other local indigenous broadleaf tree species replanted to achieve the goal of multifunctional management of ecological public-welfare Cunninghamia lanceolata forest.

Key words: multifunction, ecological public-welfare Cunninghamia lanceolata forest, the age group, the difference analysis