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在我国农田防护林区,已先后开展了林带小气候的观测工作。目前,观测林带对平流风速的削弱作用时,一般至少需7—8名(按最低要求)以上的观测人员。一人掌握一台轻便风速表,在林带的垂直方向的观测线上进行风速观测。这种方法,不但用人多、组织困难、开支大;而且,往往因人数多,动作不一致,同时也增加了风速流场中的障碍物,从而影响了
In our country farmland shelterbelt area, we have carried out observations of microclimate in forest belt. At present, observing the weakening effect of forest belts on the advection of wind speed generally requires at least 7-8 observers (minimum required). A master of a portable anemometer, in the vertical direction of the observation line for wind speed observation. This method not only employs more people but also organizes more difficultly and costs more; moreover, it is often affected by large numbers of people and inconsistent movements, as well as increased obstacles in the wind speed flow field