乌盟后山干旱半干旱地区沙漠化治理模式探讨

地处阴山以北的乌盟后山地区,土地的风蚀沙化十分严重,北部五旗县80%的耕地遭风蚀危害,10%的草场荒漠化.草场退化,粮食产量下降,农牧业生产长期低而不稳.同时风蚀沙化也危害交通、水利设施和村镇安全.自乌盟实施"进退还"战略以来,在恢复植被、改善生态环境方面上成效显著,但在治理方式上以单一的灌草模式为主,缺乏生物多样性,并由于草种寿命短造成重复建设,为此,本文提出一些治理模式供讨论.

Mode of Desertization Management in Arid, Semi- arid Districts in Houshan,Wulanchabu League, Inner Mongolia

The land desertization eroded by wind is very serious in Houshan District, Wulanchabu League, with 80 percent of plough land damaged by wind erosion and 10 percent of range being desertificated. The production of agriculture and animal husbandry has been low and unstable for a long time. Traffic, water conservancy facilities and safety of villages have been damaged by wind erosion and desertization. After establishment of returning cultivated land to forest (grasses) in Wulanchabu League, remarkable effects have been gained in recovery of vegetation and improvement of ecoenvironment. But, in management mode, it is lack of biodiversity. Reconstruction has been done because the life of grass species is short. In this paper, several kinds of management mode have been proposed to have a discussion.