油茶幼林林药间种对林分气温、光照的效应研究

Effect of Forest Herbal Medicine Intercropping on Temperature and Light of Camellia Forest Stands

研究了油茶幼林秋季间作中草药对林地小气候因子的影响,对间作4种中草药后油茶林地不同地面高度的空气温度、光照强度变化进行了观测。结果表明:间种中草药影响了林间不同离地高度与1日不同时段的气温及光照强度;其中,调节林间空气温度能力为:黄柏>千斤拔>郁金>粉防已>CK,分别比CK降低了2.34、1.12、0.18、0.15℃,0~100 cm高度日均气温可比CK降低0.22~3.10℃;离地20 cm高度降低幅度最大,降温0.84~3.10℃。调节林间光照强度能力为:黄柏>郁金>千斤拔>CK,分别比CK降低了85.92%、39.90%、29.94%,0~100 cm高度的日均光照强度比CK降低了11.70%~88.97%;其中地面降低强度最大,光照降低41.16%~88.97%。因此,油茶幼林套种黄柏、千斤拔、郁金、粉防已对秋季林间气温与光照小气候因子具有明显改善作用,研究可为油茶林间种适宜作物改善林地秋季小气候提供科学依据。

In order to study the effect of Chinese herbal medicine intercropping on the microclimate factors of the young Camellia oleifera plantation in autumn,the changes of air temperature and light intensity of four Chinese herbal medicine intercropping forests in September were observed.The results showed that the intercropping of Chinese herbal medicine can affect the temperature and light intensity of different height from the ground in the forest and different times of the day.Among them,the capability of Chinese herbal medicine regulating forest air temperature was phellophylla>corydalis>turmeric>albumin>CK,which was 2.34,1.12,0.18,0.15℃lower than CK,respectively.The average daily temperature of 0~100 cm hei-ght was lower 0.22~3.10℃than CK.The average daily temperature of 20 cm above the ground decreased the most,dropping 0.84~3.10℃.The ability to adjust the light intensity in the forest was phellophylla>turmeric>corydalis>CK,which decreased by 85.92%,39.90%,29.94%,respectively,and the average daily light intensity at 0~100 cm height decreased by 11.70%~88.97%compared with CK.The intensity of ground reduction was the largest,and the illumination decreased by 41.16%~88.97%.Therefore,the intercropping of phellophylla,corydalis,turmeric and albumin in young Camellia oleifera forest had obvious effect on the improvement of the microclimate factors in autumn.This study can provide a scientific basis for the improvement of autumn microclimate of the woodland by Camellia oleifera intercropping suitable crops.