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适用的土壤侵蚀预报模型能有效地对不同区域不同尺度的土壤侵蚀趋势进行预测预报,为水土流失治理、土地资源合理利用提供重要的理论指导。长期以来,对土壤侵蚀的定量预报受到国内外水保界的普遍重视。采用定量与定性相结合及核示踪等多种方法,对地表过程中的土壤迁移动态进行了广泛而深入地研究。长江中上游区由于多元的地貌结构及复杂的人为干扰,致使水土流失普遍发生,其中一些区域甚至达到严重的程度。通过总结长江中上游土壤侵蚀预报的研究现状,对经验统计模型、物理成因模型作了详细的评述,在此基础上分析长江中上游土壤侵蚀预报模型研究和应用的发展前景。
The applicable soil erosion prediction model can predict and predict the trend of soil erosion at different scales in different regions effectively and provide important theoretical guidance for soil erosion control and rational utilization of land resources. For a long time, the quantitative prediction of soil erosion has drawn universal attention from the water conservation community at home and abroad. The quantitative and qualitative combination of nuclear tracing and other methods are used to conduct a comprehensive and in-depth study on the dynamics of soil migration in the surface processes. In the middle and upper reaches of the Yangtze River, due to the diversified geomorphological structure and complicated man-made disturbances, soil erosion has generally occurred, and some of these regions have even reached serious levels. By summarizing the research status of soil erosion prediction in the middle and upper reaches of the Yangtze River, the empirical statistical models and physical genetic models are reviewed in detail. Based on this, the research prospects of the soil erosion prediction models in the middle and upper reaches of the Yangtze River and their application prospects are analyzed.