根据《森林资源调查主要技术规定》中的地类划分,天然林郁闭度为0.3以上的,灌木林覆盖度为40%以上的,可参与森林覆盖率的计算。这几年我们在新疆胡杨林区调查中发现,这样计算的覆盖率不能很好地反映森林的作用。新疆胡杨林区是新疆的第二大林区,对南疆的生态协调起着决定性的作用,通过调查发 According to the classification of land in the Main Technical Regulations of Forest Resources Survey, the natural forest canopy density is 0.3 or more, and the shrub forest coverage is more than 40%, which can participate in the calculation of forest coverage. In the past few years, we found in the survey of Populus euphratica forest in Xinjiang that the calculated coverage does not reflect the role of forests well. Xinjiang Populus euphratica forest region is the second largest forest region in Xinjiang, which plays a decisive role in ecological coordination in southern Xinjiang. Through investigation,