侵蚀等级 meaning in English

erosion class

Soil erosion is an important topic in the planning of soil and water conservation in the urban area
摘要土壤侵蚀等级的确定是城市水土保持规划中的重要问题。
An operable evaluation model was constructed through the analyses of various evaluating indexes , which can be regard as a means of determining soil erosion degree in the planning of soil and water conservation in the urban area
通过对各评价指标的分析，以及评判结果的量化，提出了一个具有可操作性的综合评判模型，可用于编制水土保持规划中确定土壤侵蚀等级。
However , the error ( mistake ) results from erosion level human generated . in addition , it takes time and uses great efforts . these two methods can not meet the need of dynamic survey on soil losses distribution temporally and spatially in soil and water conservation very well
虽然二者都可依据部颁技术规程获得调查或监测图件和相关统计数据结果，但均因存在人为确定侵蚀等级的主观性，加上投入人力、物力规模大，越难越不适应适时、动态监测水土流失时空分布的水保要求。