... 固定苗圃 permanent nursery 固定样地 permanent sample plot 固沙造林 dune fixation afforestation ...
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文章提出了利用森林资源连续清查固定样地进行植被种类和生物量调查的技术方法。
In this paper, the methodology of vegetation investigation and biomass statistics in the consecutive inventory of forest resources was put forward.
通过大量的省级固定样地资料，对林分生长转移概率模型和进界生长模型进行了参数估计，并对模型进行了比较和修正。
With the data of permanent sample plots, the parameters of transition probability and ingrowth models were estimated, and some models were compared and partly modified.
对固定样地调查，采用伐桩的径、高度、萌芽的数量、萌芽的生长情况等指标，分析东北东部林区主要阔叶树种的伐桩萌芽更新规律。
The law of stump sprouting of broad-leaved tree species was studied in eastern forest area in Northeast China by the investigation of fixed sampling.
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