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利用植被-风蚀耦合动力学研究了植被生长发育与风蚀发生、发展之间的动力学关系,考虑了植被覆盖度V和风蚀比S之间的相互耦合作用,以及在外力作用尤其是人类活动影响下的植被与风蚀的演变规律,以此建立了植被-风蚀动力学模型。将模型应用于京津风沙源治理工程区等区域,采用试算法探索了模型中参数的取值,模拟了区域植被盖度与风蚀比发展演变过程,发现模拟结果与实际演变过程符合精度较高,进而分析并利用模型进行预测,结果表明,植树造林等增加植被的措施对风蚀发展的控制作用比较缓慢,是一个长期作用效果,需要坚持不懈的努力才可能达到预期的治理效果。
The dynamic relationship between the vegetation growth and development and the occurrence and development of wind erosion was studied by using the vegetation-wind erosion coupling dynamics. The mutual coupling between the vegetation coverage V and the wind erosion ratio S was considered, and the effects of external forces, especially human activities Under the evolution of vegetation and wind erosion, the vegetation-wind erosion dynamics model was established. The model was applied to the area of Beijing-Tianjin sandstorm source control project area. The parameters of the model were explored by trial-and-error method to simulate the development and evolution of vegetation coverage and wind erosion ratio. It was found that the simulation results were in good agreement with the actual evolution process , And then analyzed and used the model to predict. The results show that the measures of increasing vegetation such as afforestation are relatively slow to control wind erosion development, which is a long-term effect. It requires perseverance to achieve the expected treatment effect.