人工抚育对不同海拔梯度辽东栎生长的影响

Effects of artificial tending on growth of Quercus liaotungensis at different altitudinal gradient

以淄博市鲁山林场辽东栎人工林为研究对象,研究人工抚育对不同海拔梯度辽东栎生长的影响。结果表明,人工抚育4年后,高海拔(平均海拔1 055 m)、中海拔(平均海拔856 m)和低海拔(平均海拔666 m)辽东栎人工林的平均胸径增长量分别为1.67、2.36和1.03 cm;平均树高增长量分别为1.84、2.54和0.99 m;平均单株材积增长量分别为0.041 5、0.067 5和0.021 9 m3。与高海拔和低海拔辽东栎人工林相比,人工抚育对中海拔辽东栎人工林生长的促进作用最明显。该研究为辽东栎在鲁中山区引种推广提供了理论依据。

By taking Quercus liaotungensis Koidz artificial forest in Lushan Forest Farm of Zibo city as the studied object, the effects of artificial tending on the growth of Q. liaotungensis at different altitudinal gradient were studied. The results of forest growth show that after 4 years artificial cultivating, the average DBH increments of Q. liaotungensis plantations at high altitude （average altitude 1055 m）, middle altitude （average altitude 856 m）, and low altitude （average altitude 666 m） were 1.67, 2.36 and 1.03 cm, respectively; the average tree height increments at high altitude, middle altitude, and low altitude were 1.84, 2.54 and 0.99 m, respectively; in addition, the average individual volume increments at high altitude, middle altitude, and low altitude were 0.041 5, 0.067 5 and 0.021 9 m3, respectively. Compared with high altitude and low altitude forests, the artificial cultivating measure greatly promoted the forest at middle altitude. The findings will provide the scientific basis for introduction and extension of Q. liaotungensis artificial forest in mountainous area at the middle part of Shandong province.