High mountain steep, steep tall, Hillwood tall ancient trees stand perennial green, not because of deforestation, forest to fend for itself, rich in species, as well-so far.
山高陡峭，险峻挺拔，山林古木参天，常年翠绿，因未能砍伐，林木自生自灭，树种丰富，至今林象完好。
Calorific values of l-5 year old trees of 21 main woody plant species in Ningxia were determined by using a sampling method similar to that of cutting fuel shrub forest.
应用模拟灌木平茬的采样方法，采集、测定了宁夏21种主要木本植物1 ~ 5年生树的热值。
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