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论文研究了黄土高原侵蚀产沙、高含沙水流的空间分布特征,并对比分析了两者空间分布的异同。结果表明:黄土高原高含沙水流高发区、侵蚀产沙高值区呈带状分布,大致为东北—西南向,带状区域中包括三个高峰区;黄土高原降雨量、NDVI等值线的空间分布方向与侵蚀产沙带及高含沙水流高发区延伸方向平行,侵蚀产沙带及高含沙水流高发区基本位于200~600 mm降雨量及NDVI值为0.15~0.25范围内,当降雨量达到400 mm及NDVI为0.17时侵蚀产沙达到峰值,而当降雨量为400 mm及NDVI为0.2时,高含沙水流达到峰值;影响因素对侵蚀产沙、高含沙水流发生的作用规律的一致性,决定了黄土高原侵蚀产沙与高含沙水流分布的相似性,而侵蚀产沙、高含沙水流对影响因素响应程度的差异,是两者空间分布差异的重要原因。
The paper studied the spatial distribution characteristics of erosion and sediment yield and high sediment flow in the Loess Plateau, and compared the similarities and differences between the two in spatial distribution. The results show that the high sediment concentration area of the Loess Plateau distributes in a high value zone of erosion and sediment, which is roughly northeast-southwest. There are three peak areas in the strip area. The rainfall in the Loess Plateau, NDVI isoline The direction of spatial distribution is parallel to the extending direction of the erosion-producing belt and the high-sediment flow area. The rainfall-prone areas with erosion-producing belt and high-sediment flow are located in the range of 0.15-0.25 with precipitation of 200-600 mm and NDVI value of 0.15-0.25. When the rainfall reaches 400 mm and the NDVI is 0.17, the peak sediment yield reaches its peak. When the rainfall is 400 mm and the NDVI is 0.2, the peak flow of high sediment concentration reaches the peak value. The influence of the factors on the erosion and sediment yield and the high sediment flow The similarity between the distribution of erosion and sediment yield and the high sediment flow distribution in the Loess Plateau determines the similarities between the distribution of erosion and sediment yield and the high sediment concentration in response to the influencing factors.