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在重度放牧压力与常年风蚀的共同作用下,呼伦贝尔海拉尔河南岸沙地,形成了大小不一的生态破口,其中部分生态破口相互连接,形成了沙化草场。针对此情况,采取草方格沙障与乔灌草相结合综合治理技术,使研究区天然植被的高度和密度逐年递增,天然草本高度和密度分别达到44.31cm和42株/m~2;有机碳、全氮及全磷含量分别增加了22.22%、1.2%、24.99%;在短期内能够迅速提高土壤全磷、全氮养分和有机质的含量,对流动沙土肥力提高具有显著作用。
Under the combined effect of severe grazing pressure and perennial wind erosion, the sand banks on the south bank of the Hailar River in Hulun Buir formed ecological breaches of different sizes, some of which were interconnected and formed sandy grasslands. In view of this situation, taking the combination of grass checkered barrier and arborvitae shrubs and grass comprehensive management techniques, the natural vegetation height and density of the study area increased year by year, the natural herb height and density reached 44.31cm and 42 plants / m ~ 2 respectively. Carbon, total nitrogen and total phosphorus increased by 22.22%, 1.2% and 24.99% respectively. In the short term, the contents of total phosphorus, total nitrogen and organic matter in soil were significantly increased, which had a significant effect on the increase of soil fertility.