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以黄土古环境与现代生物气候带地理分布的相似性为楔入点 ,从现代黄土性土壤的水分能量状态和土壤水分物理特征二方面对黄土高原环境的旱化与黄土中水分关系进行了探讨 .黄土中水分状况愈向西北 ,愈趋干燥 ,这不仅为黄土来源地风起扬尘提供了条件 ,而且揭示了黄土高原环境的旱化在强度上存在着明显的方向性变化 .
Taking the similarity between the ancient paleoenvironment and the modern bioclimatic distribution as the key points, this paper discussed the relationship between the environmental drought and the water in the loess plateau from the aspects of water energy status and soil water physical characteristics of modern loessial soil The water condition in the loess is more towards the northwest and drier, which not only provides the condition for the wind to blow dust from the source of loess, but also reveals that the drought in the loess plateau has obvious directional change in intensity.