水杉原生母树生长势调查研究

Research on the Growth of the Primary Metasequoia glyptostroboides Mother Trees

通过野外调查,对湖北省利川市小河水杉原生种群进行了生长势的研究,探讨了在不同海拔、树龄、坡向、坡位、坡度和土壤以及不同的干扰因子条件下,水杉原生母树的平均树高、胸径、冠幅等生长势状况,结合定性观测,综合评价了现存水杉原生种群的生长势.

Based on the research of the original Metasequoia glyptostroboides in Xiaohe Valley,the averages of the tree height,diameter at breast height（DBH） and canopy breadth are listed.The variables of altitude,age,aspect of slope,position of slope,gradient of slope and soil are classified to value the growth of the primary Metasequoia glyptostroboides mother trees.