许多无地下水观测资料的岩溶山区，其水资源评价主要靠岩溶水文学方法。
In many karstic mountainous areas where there are no groundwater observation data available, water resources evaluation is conducted mainly dependent on karst hydrological method.
根据该系统的特点，将模型分解为三峡库区和坝址至湖口两大子系统，采用水文学方法进行洪水演进计算。
The system is decoupled into two subsystems, namely the upper dam site subsystem and the dam site Hukou subsystem, according to its nature. The flood routing is carried out with hydrology methods.
对于现代土壤侵蚀着重介绍了测量方法、遥感方法、地球化学方法、地貌学方法、水文学方法、土壤学方法；
The former include measurement method, remote sensing method, geochemistry method, physiognomy method, hydrology method and agrology method;
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