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改造利用沙漠,必须对沙地的特点加以详细的研究,方能制定出合理的措施。研究沙丘土壤的发育,是使我们掌握沙地自然生草过程中土壤性质的变化,为人工固定流沙和沙地的合理利用提供理论依据的有效方法。 近两年来,我们的研究认为,沙地土壤的发育有两个方向。在排水良好的条件下,向着地带性土壤方向发展;在地下水位高及带来盐分的地方,向着草甸化、盐渍化的方向发展。为了阐明宁夏河东沙地白家滩地区地下水深埋藏条件下沙丘自然生草过程中土壤的发育及其性质的变化,1959年我们在灵武治沙综合试验站(白家滩)就不同类型的沙丘(流动沙丘、半固定沙
To reform and utilize the desert, it is necessary to conduct a detailed study of the characteristics of the sand so as to formulate reasonable measures. Studying the development of sand dunes is an effective method to grasp the changes of soil properties during the natural grass-setting process and provide a theoretical basis for the rational use of artificial sand and sand. In the past two years, our research suggests that soil development in sandy land has two directions. In well-drained conditions, toward the zonal soil development; in the high groundwater levels and bring salinity, toward the meadow, salinization direction. In order to elucidate the soil development and the nature change of the sand dune during the natural grass-planting process under the deep burial conditions of the groundwater in the Bajiatan Sandy Area of the Hedong Sandy Land in Ningxia, Ningxia, China, in 1959 we conducted a series of experiments on different types of Sand dunes (mobile sand dunes, semi-fixed sand