辽西半干旱地区矸石废弃地造林树种筛选

对辽西半干旱地区矸石废弃地以排矸年龄为界限,划分为4个类型,在不同类型上进行人工造林试验,通过对比试验筛选适生造林树种。结果表明:Ⅰ类矸石废弃地适宜的造林树种排序为紫穗槐>锦鸡儿>白榆>沙棘>沙枣;在Ⅱ类矸石废弃地上适宜造林树种排序为紫穗槐>锦鸡儿>火炬树>臭椿>白榆>刺槐;Ⅲ类矸石废弃地适宜的造林树种排序为火炬树>臭椿>刺槐>白榆>杨树>侧柏>樟子松;Ⅳ类地区矸石废弃地适宜的造林树种排序为火炬树>臭椿>刺槐>杨树>旱柳>白榆>侧柏>樟子松。

Afforestation Tree-Species Selection of Gangue Wasteland in Semiarid Region of Western Liaoning Province

The gangue wastelands in semiarid region of western Liaoning Province were divided into four types according to the age of discarded gangue.Afforestation experiments were conducted in different types;through contrast test suitable afforestation tree species were selected,the order of suitable species in gangue wasteland within classⅠis:Amorpha fruticosa>Caragana fruten>Ulmus pumila>Hippophae rhamnoides> Elaeagnus angustifolia;the order of suitable afforestation tree-species in gangue wasteland withinⅡ gangue is:Amorpha fruticosa>Caragana fruten>Rhus typhina>Ailanthus altissima>Ulmus pumila>Robinia pseudoacacia;the order of suitable afforestation tree-species in gangue wasteland within class III is: Rhus typhina>Ailanthus altissima>Robinia pseudoacacia>Ulmus pumila>Populus sp.>Platycladus orientalis>Pinus sylvestris var.mongolica;the order of suitable afforestation tree-species in gangue wasteland within class IV is:Rhus typhina>Ailanthus altissima>Rabinia pseudoacacia>Populus sp.> Hankow willow > Ulmus pumila>Platycladus orientalis >Pinus sylvestris var.mongolica.