文章基本信息

标题：The Effect of Moss Height on Survival and Growth of Picea jezoensis Seedlings on Fallen Logs
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作者：H. Iijima ; M. Shibuya ; H. Saito 等
期刊名称：日本森林学会誌
印刷版ISSN：1349-8509
电子版ISSN：1882-398X
出版年度：2004
卷号：86
期号：4
页码：358-364
出版社：The Japanese Forest Society
摘要：We surveyed the germination and survival rates, morphological characteristics, spatial pattern of root extension, and the mass distribution into each organ of current and 1-year-old Picea jezoensis seedlings growing on fallen logs with no moss (FL_B), short moss (FL_S), and tall moss (FL_T) in a natural coniferous forest in central Hokkaido, northern Japan, in order to estimate the in FL_Uence of moss height on the establishment of P. jezoensis seedlings on fallen logs. The germination rate was significantly lower on FL_T than on the others. The survival rate of seedlings did not differ among the logs. Almost all parts of the tap roots of living and dead seedlings were distributed in the humus and wood layers of the logs, irrespective of moss height. Seedlings on FL_T had longer stems and greater stem masses than seedlings on the other logs, which indicated their morphologic and allometric acclimation to shading from the tall moss. The masses of individual current-year seedlings were lower on FL_T than on the others. The masses of individual 1-year-old seedlings were lower on FL_B than on FL_S. The root extension of 1-year-old seedlings on FL_B was inhibited and resulted in shorter roots and a higher T/R ratio. Consequently, the growth of 1-year-old seedlings on FL_B was inhibited. Therefore, FL_S is the most suitable for the establishment of P. jezoensis seedlings.