This trend is negatively related with the change in population density in logarithmic mode, which indicates that the actual forest carbon density is prominently determined by human activities.

• 这种分布规律与我国人口密度的变化趋势正好相反 ；两者有一种对数关系 .；这说明我国实际森林植物C密度大小首先取决于人类活动干扰的程度