深圳市城市土壤侵蚀预测模型的初步建立

Establishment of Forecast Model for the Soil Erosion in Shenzhen

根据深圳市全市水土流失斑块的调查资料和产沙观测结论,通过选取水土流失主要影响因子:地形、植被、降雨、土壤、城市化人为影响因子,建立侵蚀量与这些影响因子之间的多元回归关系方程,属深圳市首例。其中城市化人为影响因子是反映城市水土流失特点的一个因子,反推求得。建立的模型通过2组实测资料的检验,具有较高的精度,能够较科学地反映深圳地区城市水土流失特点。

According to a survey of soil erosion and water loss speckles in Shenzhen City and the conclusions concerning sediment yield observation, the authors select such major factors as landform, vegetation, rainfall, soil and artificial urbanization element in regard to soil erosion and water losses and establish the multiple regression relationship formula between the erosion volume and these factors. Among them, the artificial urbanization element is acquired by means of reverse inference based on the survey materials from three water conservation experimental stations in Shenzhen. The established models, tested by two sets of actual test materials, prove to be of high precision and able to scientifically reflect the water loss and soil erosion characteristics in Shenzhen.