天然樟子松林内沙地风蚀区直播生物沙障治沙效果

Effects of Seeding Biological Sand Barrier Directly in Wind Erosion Area inside Pinus sylvestris var. mongolica Natural Forest

在呼伦贝尔鄂温克旗锡尼河东苏木境内天然樟子松林内风蚀区,采用雨季直播杨柴生物复合沙障固沙,2年后植被取得良好恢复,并促进了沙地樟子松的天然更新,风蚀坑内杨柴高度达到46.3 cm,植被盖度为27%;平缓流动沙地杨柴高度达到62.7 cm,植被盖度为37%。另外,在风蚀坑内,不论是杨柴还是天然草本植物,都是坡中部的密度最大,长势最好;风蚀坑阳坡植被恢复好于阴坡。

In wind erosion area inside Pinus sylvestris var. mongolica natural forest in Ewenke, Hulunbeier, the vegetation have been recovered after seedling biological sand barrier of Hedysarum mongolicum directly in rainy sea- son for two years, and the natural regeneration of Pinus sylvestris var. mongolica have been promoted. In blowout pit, the height of Hedysarum mongolicum reach to 46.3 cm, the vegetation coverage is 27%. In gentle moving sandy land, the height of Hedysarum mongolicum reach to 62. 7 cm, the vegetation coverage is 37%. In addition, in blowout pit, both Hedysarum mongolicum and natural herb have the highest plant density in the middle of slope and grow very well. The vegetation recovery in blowout pit in sunny slope is better than that in shady slope.