大别山区毛叶山桐子的群落特征及其健康状况评估

Investigation on ecological community characters and evaluation on health condition of Idesia polycarpa var. vestita in Dabie mountain area of China

调查了安徽大别山地区野生毛叶山桐子群落,并对毛叶山桐子成株健康状况进行评估,探究环境因子对群落多样性和毛叶山桐子成株健康状况的影响。结果表明,毛叶山桐子群落的多样性指数和坡位、坡向与人为干扰相关性显著,而与海拔、坡度相关性不显著。毛叶山桐子成株健康状况与坡度因素显著负相关,与其他因素相关性不显著。山桐子的群落多样性及健康状况虽然受多种因素影响,但水分因子对其影响较大。

The I. polycarpa var. vestita communities were investigated using the quadrat method and the health conditions of adult I. polycarpa var. vestita were evaluated to explore the distribution and effect of environmental conditions on the healthy growth of adult I. polycarpa var. vestita. The results show that distribution of the variety of the communities has significant correlation with slope position, slope direc- tion and human disturbance ,whereas altitude and slope degree have limited effects on the distribution of variety of the communities. The health condition of adult I. polycarpa var. vestita has significant, nega- tive correlation with slope, but has insignificant correlation with other environmental factors. Many factors contribute to the variety of ldesia polycarpa var. vestita communities and its health condition, but water factor has greater effects.