The Response Of River Ecological Service Value And Hydrological-ecological Impact Mechanism

Rivers can provide abundant water resource for human beings,and also play an important role in maintaining the stability of the ecological system.While getting superfluous development and utilization,the ecosystem has been damaged,and caused a threat to river health degree,economic benefits of river ecosystem service functions also sold at a discount greatly.Therefore,it is meaningful to maintain service functions and benefits of river ecosystem.This paper presents the hydrological ecological impact mechanism and its relationship with mutual response between the ecological service value.Taking Dongjiang river basin as the case,applying hydrological analysis method to study the hydrological ecological impact mechanism and its relationship with mutual response between the ecological service value.The researching result and conclusion as follows:1)On the basis of introducing the connotation of river hydrology and ecological factor and analyzing the change characteristics of river hydrological factors and ecological factors.Discussing relationship of the river hydrological factors and ecological factors,and reveal the hydrological ecological impact mechanism of river and river basin.2)Based on the study of the classification of river ecosystem service functions of a number of scholars at home and abroad,constructing the total economic value evaluation steps and evaluation method of river ecosystem service function.By means of analyzing the response-relationship between the river hydrology-ecological impact mechanism the ecological service value,establishing the suitable solution to the model of ecological service value and river hydrology-ecological impact mechanism of the response function model of the relationship between each other.3)By the means of collecting the hydrological and ecological materia of the Dongjiang River basin,adopting the method of wavelet analysis and statistical analysis of the hydrological factors and changing rule of ecological factors of Dongjiang River basin,and then getting the Dongjiang River basin by using the method of multiple regression analysis of the hydrological-ecological impact mechanism.Applying multiple regression analysis and PCA to get the responding mechanism and relationship between ecological service value and hydrological response relationship-ecological impact mechanism of the Dongjiang River basin.Then deriving the function expression of the Dongjiang River basin ecological service value and hydrological function expression-the response of the ecological impact mechanism,and making comprehensive analysis of the result.