内蒙古山地华北落叶松、樟子松与白桦的生长分析——以那日斯太林场为例

对内蒙古乌兰察布市那日斯太林场华北落叶松人工林、樟子松人工林和白桦次生林生长现状的分析结果表明,华北落叶松的树高、胸径、材积生长量均大于樟子松和白桦。且华北落叶松在该地区除了具有较强的适应性外,更具有早期生长快和优良的速生性。而樟子松在该地区的适应性较差,树高、胸径、材积生长状况均不如其他引种地区,但其胸径和材积生长优于当地乡土树种白桦。今后应对该地区的樟子松人工林和白桦次生林进行抚育间伐,提高该树种的生长潜力和生态效益,充分发挥其绿化荒山、荒地,美化环境的生态效应。

ANALYSIS ON THE GROWTH OF Larix principis- rupprechtii, Pinus syluestris var. AND Betula platyphylla IN MOUNTAIN AREA OF INNER MONGOLIA——TAKING NARISITAI FOREST FARM AS AN EXAMPLE

The study showed that the increment of Larix principis-rupprechtii's height,DBH and volume were both biger than Pinus syluestris var.and Betula platyphylla in Narisitai forest farm,Wulanchabu,Inner mongolia.Larix principis-rupprechtii has high adaptability and fast growth speed in the early years.And that Pinus syluestris var.has low adaptability and its growth of height,DBH and volume is worse than other introduced area,besides its growth of DBH and volume excelled from Betula platyphylla in this area.The nurturing-cutting measures should be taken to improve their potential growth and zoology benefit and sufficiently exert theirs zoology domino offect in the future.