摘要
对杉木纯林以及杉木分别与马尾松、毛竹、火力楠、木荷、油桐构成的混交林下的土壤养分进行了对比,并对土壤养分和杉木生长因子进行相关分析。结果表明:⑴杉木马尾松混交林可以提高土壤中氮素、磷素和有机质含量,降低土壤pH;杉木毛竹混交林可以提高土壤中的氮素和钾含量;杉木油桐混交林可以提高土壤氮素和有机质含量,降低土壤pH;杉木木荷混交林可以提高土壤pH。⑵土壤pH和有机质含量对杉木的胸径和树高影响显著,全氮含量对杉木树高影响显著,五种混交林分类型对于杉木生长因子的提高程度从高到低依次为杉×马>杉×油>杉×毛>杉×火,杉木木荷混交林没有促进杉木生长的作用。
After comparing the soil nutritions in pure Cunninghamia lanceolata plantations and mixed forests of C.lanceolata and Pinus massoniana,Phyllostachys heterocycla,Michelia macclurel,Schima superba and Vernicia fordii,the correlation analysis on soil nutrition content and C.lanceolata growth factor was conducted.The results are as followings： ⑴ The nitrogen,phosphorus and organic matter contents raised and the soil pH decreased in mixed forests of C.lanceolata and Pinus massoniana;the nitrogen and potassium contents increased in mixed forests of C.lanceolata and P.heterocycla;the nitrogen and organic matter contents increased and the soil pH decreased in mixed forests of C.lanceolata and V.fordii;the soil pH raised in mixed forests of C.lanceolata and S.superba.⑵ There were significantly influences of soil pH,organic contents on DBH,height of C.lanceolata.And there was a significantly influence of nitrogen content on height of C.lanceolata.The stimulative influences of five forest stand types on growth factors of C.lanceolata ordered from high to low as following： P.massoniana V.fordii P.heterocycla M.macclurel.And the mixed forests of C.lanceolata and S.superba can’t improve the growth of C.lanceolata.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2013年第2期34-38,共5页
Journal of Central South University of Forestry & Technology
基金
林业公益性行业科研专项经费(200904003-1)
关键词
杉木
纯林
混交林
土壤养分
相关分析
Cunninghamia lanceolata
pure forest
mixed forest
soil nutrition
correlation analysis
