土壤流失量估算方法简评

Review on the estimation of soil loss

本文概括介绍了目前世界上一些国家估算土壤流失量的方法,并将这些方法从表达、式、估算结果准确性、需要原始资料及财力物力多少、估算范围、适用地区、现在各日常用方法和我国运用情况以及未来发展趋势和理论依据诸方面作了比较,从中得出,我国目前主要的估算方法是径流场法。不久的将来,美国通用土壤流失方程,南非土壤流失计算模型(SLEMSA)、人工降雨法和示踪原子铯法等将被广泛应用。

The paper gives a brief introducton to themethods estimating soil loss amount, used in some countries of the world. It also compares the methods with each other in the aspects of equation, accuracy, number of original data, money and matter needed, rank of calculation, region suitable to, current ones in other countries and the employment in China, as well as the development trend in future and the theoretical basis. From comparison it is suggested that the current method be runoff field. In the near future USLE, SLEMSA,artificial rainfall and labelled Cs atom, etc. might be used extensively.