内蒙古奈曼旗沙漠化草地封育及其利用

THE CLOSE AND UTILIZATION OF DESERTIFIED RANGELAND IN NAIMAN BANNER,INNER MONGOLIA

对沙漠化草地封育后的调查对比,指出奈曼沙漠化草地封育后其植物生产量大幅度上升,随灌木种的消退草要的替代进而有下降的趋势,为此沙漠化草地封育2～3年后应在利用中进一步恢复;且半固定沙地既是良好的封育场所,又是最佳的人工补播改良地段为提高经济生态效益应建立“乔、灌、草”结合的沙地草地;并进一步调整性畜数量使性畜数量和封育桐配合,逐步在高效利用中恢复沙漠化草地植被。

Investigating and comparing the vegetation changes of desertified rangeland after protection, this paper point out that:the biomass and the forage production of sandy rangeland increased largely after protection andggetting less later.with shrub species exchanged by herbs.So it was suggested that the desertified rangeland can be usedg carefullly after 2-3years protection.The simefixed sandy land is not only the good place of protection for restoration but the best place of reseeding as a improvement mesure as well in sandy rangeland.It should be good to stablish the sandy rangeland with the vegetation of trees,shrubasand herbs conbination.The carrying capacity of rangeland should be changed with the improvement of rangeland condition,espacially with the rangeland protection.