Based on the study of many historical data,this article analyzes the trend of drought,elucidates the hydrographic ecological features of water resources in Shaanxi,and su.

This paper introduced the conception, principles, and multidisciplinary characteristics of hydroecology, summarized the research progress in hydroecological modeling of wetlands, and discussed the problems existed in present hydroecological modeling, such as scale confliction, lack of efficient validation methods, and indeterminati.