【摘要】 为探讨樟子松在敖汉旗沙地的适生能力 ,进行了樟子松沙地造林试验 ,结果表明 ,2 4年生的樟子松林 ,表现基本稳定 ,生长较快 ,年平均树高生长量达 0 .2 2～ 0 .38m ,胸径生长量达 0 .34～0 .5 9cm ,比油松和小叶杨的生长量大。调查研究发现 ,影响樟子松林生长的主要因素是 ,当地的降水量较低 ,在干旱年分林分出现水分亏缺 ;部分地区的土壤下层有白土间层 ,水分和养分的含量低 ;有些林分密度偏大 ,林分出现枯死现象更多还原

【Abstract】 To explore the adaptability of Mongolian pine growing in sand in Aohanqi,planting experiment were conducted.The results show that Mongolian pine plantation for 24 years is stability and grow faster,an average annual growth of height and DBH is 0.22 ～0.38m and 0.34～0.59cm respectively,bigger than Pinus tabulaeformis and Populus simonii.The main factors that affecting growth of Mongolian pine are water deficit of forest stand in dry year for lower precipitation in the locality;lower content of water and nutrient as a result of white soil interbedded stratum under soil lower strata in part region, stand decline because of large density.更多还原