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榆林沙荒属毛乌素沙地的一部分。面积2857万亩,其中流动沙地占26%,746万亩。根据历史资料考证和对现有植被及现实气象资料的分析,本区属半干旱草原地带,现今的流沙多系人为因素所致。用植物固定本区流沙具有现实可能性。从1958年起,本区先后进行过十余次飞机播种造林种草固沙试验,播过十多个植物种。大多数植物在飞播当年发芽成苗还不错,而经过冬春季的风蚀后,第二年的有苗面积率便大大下降。例如1958年在流动沙地上播种的30多万亩沙蒿,当年保
Yulin Shayu a part of the Mu Us sand. Area of 2857 acres, of which 26% of mobile sand, 746 acres. Based on historical data and analysis of existing vegetation and real-world meteorological data, the area belongs to semi-arid grassland area. Today’s quicksand is mostly caused by human factors. It is practically possible to fix sand in the area with plants. Since 1958, more than ten seeding and seeding afforestation trials have been carried out in this area and over a dozen plant species have been sown. Most plants in the airborne germination seedling year is not bad, and after the winter and spring wind erosion, the second year of the rate of seedlings has dropped significantly. For example, more than 300,000 mu of Artemisia sphaerocephala sowed on mobile sand in 1958 were preserved in that year