3种松树林林分改造树种的生长格局  

Growth pattern of tree species for pine stand improvement

作　　者：梁丽丽[1,2] 谢腾芳[2] 薛立 谭家得 赵鸿杰 田雪琴 

机构地区：[1]广州市科美都市景观规划有限公司,广州510635 [2]华南农业大学林学院,广州510642 [3]广东省佛山市林科所,佛山528222

出　　处：《生态科学》2009年第1期9-12,共4页Ecological Science

基　　金：基金项目：广东省林业局资助项目（4400-02084）,佛山市科技项目（2005020061）

摘　　要：对3种松林下的黎蒴、白花油茶、竹节树苗木的生长进行了研究。3种苗木的地径和冠幅生长量以及黎蒴和油茶的树高生长量排序为湿地松林分〉有凋落物加勒比松林分〉无凋落物加勒比松林分，而竹节树在有凋落物加勒比松林下的树高生长略大于湿地松林，二者显著大于无凋落物加勒比松林。无凋落物的加勒比松林因为去除地表凋落物后减少了养分的输入，土壤有机质和氮含量减少，导致苗木生长下降。总体来看，竹节树的地径和冠幅的生长量最大，黎蒴树高的生长量最大，二者是改造松林的优良树种，而油茶生长慢。The growth of Castanopsisfissa, Camellia oleosa and Carallia brachiata seedlings under three pine stands was studied. The growths of ground diameter and crown width in the three seedlings as well as the growth of tree height in C.fissa and C. oleosa seedlings were in the order ofPinus elliottii stand〉 Pinus caribaea stand with litter〉 Pinus caribaea stand without litter. The growth of tree height in the three seedlings in C. brachiata stand with litter was slightly greater than that in P elliottii stand, and the both were significantly greater than that in P. caribaea stand without litter. Litter removal in P caribaea stand without litter decreased nutrient input, resulting in decreases of soil organic matter and nitrogen, so that the growth speed of the seedlings became slow. Generally, growth increments of ground diameter and crown width was the greatest in C. brachiata seedling, and growth increments of tree height was the greatest in C. fissa seedling, the both were good tree species for pine stand improvement, whereas the growth ofC. oleosa was slow.

关 键 词：加勒比松 湿地松 苗木 生长格局 

分 类 号：Q948[生物学—植物学]