宜山杉木人工林生态系统养分含量和分布的研究  

Concentration and Distribution of Nutrients in An Artificial Cunninghamia lanceolata Stand Ecosystem at Yishan

作　　者：薛立[1] 罗山[2] 

机构地区：[1]华南农业大学林学院,广东广州510642 [2]华南农业大学人文学院,广东广州510642

出　　处：《华南农业大学学报》2002年第1期24-26,共3页Journal of South China Agricultural University

基　　金：广西林业局资助项目"广西森林生态系统研究"的内容之一

摘　　要：对广西宜山 11年生低产杉木人工林的N、P、K、Ca、Mg的含量和分布进行了研究 .结果表明 :各组分中叶和果的养分浓度最高 .各养分中Ca和N的浓度最大 .杉木林生态系统中 ,土壤的各种养分储存量达到生态系统相应养分总量的 99%以上 .杉木林叶量小 。Concentration and distribution of N, P, K, Ca and Mg in a 11 year old artificial Cunninghamia lanceolata stand on a poor soil were studied. The highest concentration of nutrients was found in leaves and fruits, and N and Ca concentrations were higher than those of other nutrients. Accumulation of five nutrients in soil contributed more than 99% of the total in Cunninghamia lanceolata stand ecosystem. The small leaf amount with a lot of attached dead leaves and branches and bad site condition may be responsible for the low yield of Cunninghamia lanceolata stand.

关 键 词：杉木林 养分浓度 养分分布 人工林 生态系统 低产林 

分 类 号：S791.270.1[农业科学—林木遗传育种]