作　　者： ; ; ; ;

机构地区： 福建农林大学

出　　处： 《中国生态农业学报》 2008年第5期1218-1224,共7页

摘　　要： 对杉木林采伐迹地经炼山后近自然形成不同年限的苦竹群落、杉木近熟林下苦竹群落以及灌木林地群落的种类组成、重要值、物种多样性、密度、群落生物产量、苦竹数量、生长水平进行研究,分析群落形成的基本过程及群落基本特征,表明原有一定苦竹数量基础的杉木林分,可通过近自然方式恢复植被,且恢复过程中群落组成以苦竹为主。随群落恢复时间的推移,维管束植物种类增多,科属组成日益复杂,树种组成由阳性为主转向阴性为主,群落的物种多样性增加。但群落生态优势度降低,均匀度增加,优势种越来越不明显。在近自然恢复早期,苦竹在群落中占有较大优势,但后期必须采取一定人为措施,以使其继续保持在群落中占优势,进行近自然苦竹林经营。 Species composition,importance value,diversity,density,and community biomass,P.amarus quantity and growth of P.amarus community at different ages were studied.P.amarus community near-naturally generating from Chinese fir cutting under slash-and-burn,and P.amarus community in near-maturity Chinese fir forest as well as in bush/forest community were used in the study and the fundamental factors of community formation and characteristics analyzed.The results show that Chinese fir forest,with a certain population of P.amarus can recover into viable vegetation through near-natural method,with P.amarus emerging as the dominant community in the course of recovery.Vascular plant species issues and species diversity indices of P.amarus community increases with community recovering time.Family and genus composition becomes more complex,and tree species composition changes from dominant masculine to dominant feminine plants.However,ecological dominance of the community declines,evenness index increases,and dominant species becomes increasingly unclear.P.amarus dominates the community,to a large degree,in the early stages of near-natural regeneration from slash-and-burn Chinese fir at a certain population of P.amarus.Certain artificial promotion measures must be used for the continuous dominance of P.amarus community and P.amarus must be managed by near-natural method.

关 键 词： 杉木林迹地 近自然恢复 苦竹群落 种类组成 重要值 物种多样性

领　　域： [农业科学]