寒旱区高原内陆河草原流域水文过程改变、草原生态加速恶化，而水文气象监测不足，并且大气、土壤、植被、地表水和地下水等水文要素的关系，以及它们对流域水文过程响应的研究薄弱，又考虑已结题基金项目出现关于水文模型在该类流域模拟精度问题，本研究拟通过气象、水文、自然地理和植被生态等的监测、勘察与试验 ，应用遥感解译、数值模拟、人工智能等技术，从不同时空尺度开展该类流域生态水文要素的化学协同特征研究，实现水文模拟时空数据的插补，进而以物理机制分布式模型理论构建考虑水文要素-化学协同关系的水-植被-放牧强度耦合的流域生态水文模型，解决该类流域的生态水文模拟现存问题，进而进一步揭示预测寒旱区高原内陆河草原流域不同时段、不同气候、不同水资源条件和不同放牧强度下的生态水文要素在水文和植被生态演变过程中的适应性、突变性等环境效应特征，为寒旱区高原内陆河草原流域的科学合理发展和草地资源可持续利用提供参考。

Changes of hydrological processes and grassland ecological deterioration occurred in cold and arid regions inland plateau grasslands watershed. The works of hydro-meteorological monitoring about hydrology factors (atmosphere, soil, vegetation, surface water and groundwater so on), and their study for watershed hydrological processes response is not enough. Considering the problems from the current research by NSF fund project, this study intends to take different ecological hydrology factors of water chemistry/hydrogen and oxygen stable isotope synergy evolution characteristics analysis of the main line, through the meteorological, hydrological, geographical and vegetation ecology monitoring, investigation and test, the application of remote sensing interpretation, numerical simulation and artificial intelligence technology, from a different time and space scales on this basin ecological hydrological elements of the chemical characteristics of collaborative research, implementation of hydrological simulation of spatio-temporal data interpolation, and then the theory of distributed models of the physical mechanism to build cooperative relationship based on hydrogen and oxygen stable isotopic analysis of hydrological elements of water and vegetation - grazing intensity coupling of hydrological model for watershed ecology, reveal and predict cold and arid regions inland plateau grassland at different times, different climate, different basin water resources condition and ecological hydrology factors under different grazing intensity on hydrological and adaptability in the process of vegetation ecological evolution, respectively, such as environmental response characteristics, and analyze the influence on grassland degradation, for the scientific and reasonable development of river basin and sustainable use of grassland resources to provide the reference.