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人工林小气候效应是森林生态系统研究的重要内容之一.在广西南宁市北郊的高峰林业示范基地内,选择代表性的3种不同年龄灰木莲人工林设置样地,分别对主要气象要素进行对比观测.结果表明:(1)3,8和46年生灰木莲林内太阳辐射能日平均值依次为12.53,6.09和2.44w/m2,随着林分年龄的增大,林内的太阳辐射能显著减少.(2)3,8和46年生灰木莲林内空气温度依次为24.1℃、23.9℃和23.4℃,随着林分年龄的增大,林内空气温度逐渐降低.(3)3,8和46年生灰木莲林内地面温度依次为23.6℃、21.8℃和21.3℃,随着林分年龄的增大,林内地面温度逐渐降低.(4)3,8和46年生灰木莲林内空气相对湿度依次为80%,86%和85%(RE值),随着林分年龄的增大,林内的增湿作用明显.研究结果表明,当灰木莲人工林恢复到8年生时,其林内的空气相对湿度与相同类型的成熟林相当,但削减林内太阳辐射能以及降低林内空气温度和地面温度的效果尚未达到成熟林的水平.
The microclimate effect of plantations is one of the important contents of forest ecosystem research.On the base of the peak forestry demonstration base in the northern suburbs of Nanning, Guangxi, three representative sites were set up, and the main meteorological elements The results showed that: (1) The daily average solar radiation energy of the asiatic roots in 3, 8 and 46 years were 12.53, 6.09 and 2.44w / m2, respectively. With the increase of forest age, the solar radiation in the forest (2) The air temperature in the forests of 3, 6, and 46 years were 24.1 ℃, 23.9 ℃ and 23.4 ℃, respectively, with the age of the forest increasing, the air temperature in the forest decreased gradually. (3) The ground temperatures in the 8 and 46 year-old gray wood forests were 23.6 ℃, 21.8 ℃ and 21.3 ℃, respectively. With the increase of forest age, the ground temperature in the forest gradually decreased. (4) The relative humidities were 80%, 86% and 85% (RE), respectively, and the humidification effect in the forest was obvious with the increase of the stand age.The results showed that when the plantation of the tree was restored to 8-year-old, The relative humidity of the air in the forest is comparable to that of the mature forest of the same type, but the reduction of solar radiation in the forest and the reduction of intracavity The effect of temperature and ground temperature has not yet reached the level of mature forest.