黄泛沙地杨树丰产林改善小气候效应的研究

对杨树丰产林内的小气候因素进行系统测定，结果表明：杨树丰产林能有效地降低风速；减少土壤的风蚀量；对空气温度具有明显的调节作用，在5月份能降低日平均空气温度、减小空气温度日较差；降低土壤温度，尤其是土壤表层温度的降温效果最为明显；杨树丰产林明显的提高空气湿度，有效地减少地面水分蒸发；杨树纯林能增加土壤湿度，而林麦间作则由于作物根系的吸水作用，土壤含水量明显低于纯林和对照地。

Studies on Improving Microclimate of the Fast Growing and High Yield Poplar Forest in Sandy Area of the Yellow River

The regional climate in fast growing and high yield poplar forest was analyzed ,the result shows ;it can reduce the wind speed and wind erosion effectively, obviously regulate temperature, and in May it can reduce average air temperature on day, improve air temperature near the surface, reduce soil temperature effectively, especially that of topsoil; pure poplar forest can obviously increase the moisture both of air and soil. The soil water content in interplant between poplar forest and wheat is lower than that in pure poplar forest and the comparative land obviously, because the roots of crops absorb much water in interplant between poplar and wheat.