大岗山森林生态站区气象要素分析

Analysis of Regional Meteorological Factors for Dagangshan Forest Ecosystem Research Station

采用林外对照区与不同林型小气候定位观测的实验方法,以大岗山森林生态站2001 2002年气象观测数据为基础,从太阳辐射、大气温度、大气湿度、土壤温度、降水量、蒸发量、风速和风向等因子对大岗山森林生态站站区林内与林外对照区气象要素值进行对比分析。结果表明:⑴大气下垫面的性质是影响气象要素变化的重要因子,林内气温、湿度变幅小,且基本处于静风状态;无林地气温、湿度日较差、年较差大,蒸发量相对增加,平均风速增大。⑵林分类型、郁闭度不同对气象要素的变化也有很大影响。

With the experimental ways of locating observation of the microclimate out of the different forest, based on the observation data of Dagangshan Forest Ecosystem Research Station from 2001 to 2002, this paper applies solar radiation, sunlight hours, air temperature, air humidity, soil temperature, rainfall, evaporation, wind speed, wind direction etc. to analyze the meteorological factors in and out of the forest of the station. The results show :(1)the characteristic of ground is the key factor, which influences on the meteorological change; the variation of temperature and humidity is little and approximates static breeze status in the forest; the temperature of barren land, the daily variation of humidity and the annual variation of humidity are higher; evaporation increases; average wind speed increases. (2)different forest types and coverage affect on the meteorological factors deeply.