【摘要】 通过对近年来有关造林密度的研究分析,详细阐述了造林密度与水分平衡的关系;造林密度与近自然造林的关系;造林密度与林种的关系。通过对上述影响因素的研究分析,结合干旱、半干旱地区的实际情况,给出该区域小叶锦鸡儿、胡枝子、油松、樟子松、沙地柏、油蒿等几种常见乔灌木树种造林的合理密度范围,为干旱地区造林绿化提供了理论依据。更多还原

【Abstract】 Through studying and analyzing the afforestation density in recent years,the relation between afforestation density and water balance,the relation between afforestation density and near natural afforestation,and the relation between afforestation and tree species have been expounded in detail. Combined with the practical situations in arid and semi- arid area,the rational density ranges of some common arbor and shrub species have been determined, which provide the theoretical basis for affestation and greening in arid area.更多还原