Zoning Research and Evaluation of Ecosystem Service Function Combined with Specific Model and GIS——A Case Study of Suiyang,Zheng'an and Daozhen Area in the Furong River Basin of Northern Guizhou
Suiyang,Zheng'an and Daozhen area in the Furong river basin in northern Guizhou are important components of the Yangtze River key ecological area in the overall layout of the major national ecolog-ical system protection and restoration project with"three districts and four belts"as the core,and are important ecological security barrier in the upper reaches of the Yangtze River.Ecosystem service function evaluation and ecological function regionalization are important bases for integrated protection and system governance of regional ecosystem.Based on the water balance equation model,RUSLE model and NPP model,combined with GIS,this study established a regional ecosystem service function evaluation and zoning system,and planned the future on the basis of identifying the existing state,so that each region can better undertake the corresponding e-cosystem service function.The results showed that the area of ecosystem service function above medium impor-tance in the study area was 5 166.11 km2,accounting for 70.85％of the total area.The importance of ecosystem services in the study area was relatively high,and they were mainly distributed in the west,north and middle of Daozhen county,the middle of Zheng'an county and the north of Suiyang county.On the basis of in-dex extraction and remote sensing interpretation,regional ecological functions were divided according to ecologi-cal regulation function,product supply function and human settlement guarantee function.In view of the main ecological problems of various ecological functional areas,the direction of ecological protection and restrictions and prohibition measures were proposed,and six important ecological functional areas were divided into key are-as for regional protection and restoration,providing key target areas and implementation paths for ecological pro-tection and restoration projects such as integrated protection and systematic management of regional mountains,rivers,forests,farmlands,lakes and grasslands.
Water balance equationRUSLE modelNPP modelFunction evaluation of ecosystem servicesEcological function zoning
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