作　　者： ; ;

机构地区： 华南农业大学林学院

出　　处： 《华南农业大学学报》 2002年第1期24-26,共3页

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

领　　域： [农业科学] [农业科学]