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以位于东北黑土漫岗区的乌裕尔河流域及其周边部分地区为例,探讨该区土壤侵蚀产沙平衡问题。利用侵蚀产沙平衡的方式,分析了东北黑土漫岗区侵蚀泥沙的来源、侵蚀泥沙的沉积部位以及流域产沙之间的关系。通过历史资料、实地观测等方式,明确了坡面及沟道侵蚀为该区侵蚀泥沙的主要来源;坡间凹地、坡脚及坡下草甸为侵蚀泥沙的主要沉积位置,只有少部分泥沙通过流域出口输出。进而阐明了该区坡面侵蚀量大,河道输沙量小的主要原因,为该区水土保持规划、水土流失治理提供了参考依据。
Taking Wuyuel River Basin and its surrounding areas in the Manchurian area of northeastern China as an example, the issue of soil erosion and sediment balance in this area is discussed. Based on the method of erosion and sediment balance, the relationship between erosion source and source, sediment deposition area and sediment yield in the drainage area of northeast black soil was analyzed. Through historical data and field observation, it is clear that the erosion of the slope surface and channel is the main source of sediment erosion. The main sedimentary site of erosion and sediment is the concave slope, the slope foot and the meadow under the slope, and only a small part Sediment exports through the basin exit. Then the main reason that the slope erosion is large and the sediment discharge is small is clarified, which provides a reference for the soil and water conservation planning and soil erosion control in this area.