榆林风沙区乔灌木树种适宜性评价

Evaluation on Suitability Characteristics of Trees and Shrub in Yulin Aeolian Sandy Areas

通过对榆林风沙区立地条件、乔灌木造林密度以及树木生长状况调查分析,应用灰色关联分析法对该地区乔木和灌木适宜性进行评价,评价结果为:乔木适宜性由大到小的顺序为合作杨(Populus×Xiaozhuanica)、小叶杨(P.simonyi)、油松(Pinus tabulaeformis)、侧柏(Platy-cladus orientalis)、樟子松(P.sylvestris var.mogolica);灌木适宜性顺序为花棒(Hedysarum scopa-rium)、沙柳(Salix cheilophila)、柠条(Caragana korshinskii)、紫穗槐(Amorpha fruitcosa)、踏榔(H.Mongolicum)、臭柏(Sabina vulgaria)。该方法克服了以往评判中只注重某一性状而忽视其它性状所造成的偏差,为榆林风沙区造林选种提供更为合理的依据。

By investigating site condition, planting density and the growth state of trees and shrubs in Yulin aeolian sandy areas, suitability characteristics of these trees were evaluated based on the method of gray connection analysis. The results showed that the sequence of suitability characteristics of trees was Populus X Xiaozhuanica,P. simo-nyl,Plnus tabulaeformis ,Platycladus orientalis ,P. sylvestris var. mogolica, and that of shrubs was Hedysarum scopa-rium ,Salix cheilophila,Caragana korshinskii ,Amorpha fruitcosa ,H. Mongolicum ,Sabina vulgaria.