张广才岭西坡人工针叶林小气候效应的研究

通过对东北林业大学老山人工林实验站红松、樟子松、落叶松人工林小气候长期定位观测资料系统分析，针对东北地区特点研究了针叶人工林非生长季和生长季的气候效益。结果表明：（１）人工林气温效益显示出非生长季缓冷保温作用大于生长季缓热降温作用的特点。非生长季红松林内气温增加２４．３％，落叶松增加２１．６％，樟子松增加１０．８％，差异达显著水平。（２）对空气湿度的影响，以生长季增加相对湿度最为显著，其中樟子松，

MICROCLIMATIC EFFECTS OF CONIFER PLANTATIONS IN WESTERN SLOPE OF ZHANGGUANGCAI MOUNTAIN

According to the climatic characters in Northeast of China, microclimatic effects of conifer plantations both in nongrowing seasn (from May to September)and growing season were presented by systematic analysis on observation data collected from Korean pine,Mongolian scots pine and Dahurian larch plantations on Laoshan Experimental Station attached to Northeast Forestry University.Results show that;(1)The effect of air temperature in plantations get increased more significant in growing season than that decreased in growing season. The air temperature increased relatively 24. 4% in Korean plantations.(2) The effect of air humidity in growing season get significant level. in which humidity in Mongolian scots pine plantation get increased 7. 6, 5. 6 and 4. 6 in Dahurian larch and Korean pine plantations. This is very profitable for increasing the height increment.(3) Soil temperature effect of plantations get significant level both in nongrowing season. meanwhile.the effect of increasing in nongrowing season is bigger than decreasing in growing season. The everage value of increasing effect is about 24.3%,it makes enough condition for roots to absorb nutrition to promote the tree growth next spring.