我国北方困难立地植被恢复的重要先锋树种

Difficult Land Vegetation Restoration of Important Pioneer Tree Species in the North of China

作为我国北方地区困难立地植被恢复与重建的先锋树种,柳叶鼠李、三裂绣线菊、蒙古扁桃和红刺榆值得高度重视。该4个树种不但具有耐寒、耐旱、耐瘠薄、抗风沙等优良种性,有的还兼具一定的经济价值。开发利用好这几个普通而又宝贵的乡土树种,对生态公益林营建意义重大。

As the pioneer tree for the restoration and reconstruction of the difficult land vegetation in northern China,Rhamnus erythoxylon Pall., Spiraea trilobata L. ,Prunus rnongolica（Maxim. ）Ricker and Hemiptelea davidii （Hance） Planch. were highly valued.The four species of tree were not only hardy, drought-tolerant ,resistant to poor, resistant to wind and sand, but also some had some economic value.The development and utilization of these common and valuable local tree species are of great significance to the construction of ecological public welfare forest.