树干附生尖叶拟船叶藓的分布与环境关系

通过野外调查和室内测量，并利用统计分析方法对贵州梵净山的尖叶拟船叶藓的分布进行了研究,结果表明:在梵净山的分布范围内,海拔和坡向对尖叶拟船叶藓分布的影响不显著；尖叶拟船叶藓在5种附生树上、中、下3个部位的分布与对应部位的树皮含水量呈正相关(r值分别为0.75，0.74，0.82，0.44，0.15)；尖叶拟船叶藓在不同倾斜程度附生树干的近地面和远地面之间分布的显著差异与近地面和远地面树皮的含水量有正相关关系，树皮水分是影响尖叶拟船叶藓分布的主要因素.

Relationship Between the Distribution and the Environmental Factors in Epiphytic Moss Dolichomitriopsis Diversiformis

Based on the field investigations,laboratory examinations and statistical analysis,the results showed,that the altitude and the slope aspect had no significant effect on the distribution of Dolichomitriopsis diversiformis (Mitt.) Nog.) in its distributive area in Fanjing Mountain,that the distribution of D.diversiformis on the upper parts,middle parts and lower parts of five host tree trunks had positive correlation with the bark water content of the corresponding parts(r was 0.75,0.74,0.82,0.44,0.15 respectively) and that the distribution of D.diversiformis on the sides of near ground and far groud in different degree inclined tree trunks had positive correlation with the bark water content in the near ground tree barks and far ground barks.The water content of tree barks was the main factor that influenced the distribution of D.diversiformis.The other ecological factors that influenced the distribution of D.diversiformis were also analyzed and summarized.