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在我区科尔沁沙地东南边缘,海拔150～285米的科左后旗巴雅斯古冷、吉尔嘎朗、散都、乌苏、浩坦、布敦、乌兰敖道公社境内,天然生长着一种乔木——刺榆,别名钉字榆。《诗经》记载称“枢木”,当地蒙语叫“乌兰散都”,意思是“红色带刺的树”。是我区稀有的乡土树种,目前知道,全区仅在科左后旗有少量分布。刺榆适应性强,耐旱,耐瘠薄,固沙性能好,多长在固定沙丘的岗、坡上。冬季落叶,高可达10～15米,有的呈灌木状生长。小枝带毛,淡红褐色,长7～22厘米,具坚实的枝刺;叶椭圆形或长椭圆形,先端尖,长1～5厘米,边缘有单锯齿,上面有毛,下面
In our district, Horqin sandy land southeast edge of 150 ~ 285 meters above sea level Kezuohouqi Bayasidulang, Jiergalang, Sanders, Wusu, Haotan, Boudun, Ulan Ao Road commune, the natural growth With a tree - thorns elm, nicknamed word elm. “The Book of Songs” records that “pivot wood”, the local Mongolian language called “Ulan San are,” meaning “red barbed tree.” Is a rare native tree species in my area, now know that the region only has a small amount of distribution Houzuohouqi. Burmese elm adaptable, drought-tolerant, barren, good sand-fixing performance, long in the fixed sand dunes, slope. Winter leaves, up to 10 to 15 meters, and some shrub-like growth. Branchlets with hairs, reddish brown, 7 to 22 cm long, with a solid spur; leaves elliptic or oblong, apex sharp, 1 to 5 cm long, a single serrated edge, hairy above, below