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1960—1970年,我们对吉林省防护林重点县进行了三次考察,对主要结构类型的杨树林带进行了五次以小气候效应为主的调查研究。每年调查时间,以春季风沙季节(4—5月)为主,小气候调查用的仪器,风速表小于0.2米/秒,通风干湿表小于0.2℃。各次观测共设基本点10个,辅助测点5个,并按需要加设临时测点。各测点按制订的野外小气候观测程序进行测定。防护林带小气候由两部分组成:一是林带下所形成的特殊小气候环境,称林带小气候;另一部分为林带对邻近地区小气候发生影响,形成林带邻近地区小气候。
From 1960 to 1970, we conducted three trips to key counties in Jilin Province for shelterbelts and conducted five surveys on the main structure types of poplar belt with microclimate effects. The annual investigation time is mainly in the spring sand season (April-May). The instruments used in the microclimate survey are anemometer less than 0.2 m / s and ventilated dry-wet meters less than 0.2 ° C. A total of 10 basic observations of each observation, auxiliary measuring point 5, and if necessary, additional temporary measuring point. The measuring points were determined according to the developed field microclimate observation program. The microclimate of shelterbelt consists of two parts: one is the special microclimate environment formed under the forest belt, which is called the microclimate in the forest belt; the other is the microclimate affected by the forest belt in the neighboring area and forms the microclimate in the neighboring forest zone.