【摘要】 比较了沱江流域低山区马尾松和湿地松人工林在小气候因子上的差异。结果表明,湿地松林内夜间气温高于马尾松林,而午后气温则低于马尾松林;湿地松林内的相对湿度高于马尾松林,而风速则低于马尾松林;湿地松林内的月均土壤表面温度低于马尾松林;距地面0.5 m高处的光照强度和风速在2种人工针叶林中无明显差异,但在距地面2 m高处却是马尾松林高于湿地松林。2种人工针叶林内小气候因子的差异主要与2种林分的林冠郁闭度有关。更多还原

【Abstract】 Sample methods and surveying instruments were employed to compare microclimate characteristics of 2 artificial forests in Tuojiang Rriver Valley.The results showed that air temperature in Pinus ellioitil stand was higher than that in Pinus massoniana stand at night,while it was lower in P.ellioitil stand afternoon.In comparison with P.massoniana stand,relative humidity in P.ellioitil stand was higher,whereas wind speed in P.ellioitil stand was lower.Monthly averaged soil surface temperature in P.ellioitil stand was lower compared with P.massoniana stand.As to light intensity and wind speed,it was not significantly different between two stands at 0.5m height.However,light intensity was stronger in P.ellioitil stand than that in P.massoniana stand at 2m height.The microclimate characteristics difference between two stands were closely related to their canopy densities.更多还原