Their fluctuation degrees were also decreasing as the number of sampling points was increasing. 3) This technique used in Larix plantations was better than Mongolianoak forest.
当抽取样本多于此值后， 曲线下降缓慢。3）落叶松人工林的样地抽样效果要好于柞树林的样地。
2
The analyses result shows that tilia and Mongolianoak are suitable for regeneration under the same arboreal species and other trees is suitable under different arboreal species.
This paper analyzed the healthy level of Mongolianoak forest ecosystem in Beijing and tried to find the influencing factors of the forest health ecosystem and proposed the control methods.