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主要目的是通过对同位素在流域水文模拟应用中的一些假定、限制条件以及方法进行澄清和系统化,从而促进同位素在流域水文模拟中一些新的研究方向和研究热点。主要从三个方面,即同位素流量过程线分割、流域平均滞时与不同水源混合、与水文模型耦合,讨论同位素示踪剂在流域水文模拟中的研究进展情况。同时指出了同位素在流域水文模拟中应用存在的一些主要问题,包括:①降雨同位素含量的时空变化;②不同径流成分的采样;③径流输出同位素含量的空间变化;④流域平均滞时分布函数的确定;⑤水文同位素耦合模型。
The main purpose is to clarify and systematize the assumptions, limitations and methods of isotopes in the hydrological modeling of the watershed so as to promote some new research directions and research hotspots of isotopes in the basin hydrological simulation. Mainly from three aspects, namely the isotope flow process line segmentation, average drainage time lag and different water sources, coupled with the hydrological model to discuss the progress of isotope tracers in the basin hydrological simulation. At the same time, it points out the main problems that isotopes have in the application of hydrological modeling in the river basin, including: (1) spatiotemporal variation of isotopes of rainfall; (2) sampling of different runoff components; (3) spatial variation of isotopes of runoff output; (4) Determine; ⑤ hydrological isotope coupling model.