Research And Application Of Hydrological Regionalization In Ji'an

Hydrologic Data provide technical basis for the engineering design,water resources management and evaluation,and flood control and drought relief.The Hydrologic network is the foundation of the hydrology work,which establishes a perfect monitoring system for the collection of hydrological data.How to build a maximum benefit and the most economic as the goal,layout reasonable structure,full set of services,improve the function of the hydrological station network,realize the river flow,water level,rainfall and sediment data collection is one of the most important technology of hydrological business.Hydrological regionalization is the basic premise of hydrologic station network planning.Therefore,under the condition of limited hydrologic station net investment,the optimization of the station network layout is needed.This paper has carried out the study of hydrological similarity in Ji'an,and it has a certain reference value for the Ji'an area.The main research work of this paper includes:(1)According to the characteristics of runoff yield and concentration,this paper selects hydrological characteristics from the aspects of meteorology,hydrology and underlying surface conditions,and comprehensively considers the 9 hydrological characteristics values as the basis of classification.(2)Based on fuzzy clustering method,the selected hydrological characteristic value index,using hierarchical clustering,K clustering and K clustering algorithm based on principal components of the site are classified,and the use of GIS to divide the basin,according to the inverse distance weighting method for flow,rainfall interpolation,finally spatial clustering.(3)The results of fuzzy clustering and spatial clustering based on GIS after a comprehensive comparison and checking of hydrology in Ji'an is divided into 6homogeneous regions,then on the basis of regionalization to detect of Regional representative station in Ji'an,and give some advice.The hydrological regionalization of Ji'an by using fuzzy clustering method,it can help us to recognize the hydrological characteristics of Ji'an,which is not only to solve regional representative station adjustment,also it can be solved the region without data of hydrologic parameters interpolation.