Investigation And Comprehensive Evaluation Of Water-saving Urban Parks In Wuhai City

The thesis summarizes the main factors that affect the water-saving performance of urban park green spaces through theoretical research on water-saving gardens both domestically and internationally.Five typical parks in Wuhai City(Botanical Garden,People’s Park,Botanical Garden,Qingshan Hanmo Garden,and Wuzhumu Park)are selected as the research objects.Field research is conducted and raw data is collected.A comprehensive evaluation system for water-saving parks is established using Analytic Hierarchy Process to evaluate their water-saving benefits,Choose the park with the best water-saving benefits and promote it as a water-saving park model,providing a basis for the construction of local water-saving parks.The main research results obtained are as follows:(1)Using the Analytic Hierarchy Process,15 evaluation factors were determined for the five criteria layers of plant configuration structure,ground paving,landscape water body,rainwater utilization,and maintenance management.A water-saving evaluation system for park green spaces was established through a combination of quantitative and qualitative methods.(2)According to the calculation of indicator weights,the ranking of the first level indicator weights is: plant configuration structure(0.4499)>maintenance management(0.3139)>ground pavement(0.1200)>landscape entity(0.0767)>rainwater utilization(0.0396).The ranking of secondary index weights is: plant species(0.2331)>irrigation method(0.1825)>proportion of drought tolerant plants(0.1087)>irrigation water source(0.0971)>permeable pavement rate(0.09)>proportion of evergreen and deciduous plant species(0.0695)>water supplement source of landscape water(0.0497)>vertical layered structure(0.0387)>application of water-saving measures(0.0344)>proportion of hard pavement to park area(0.03)Greenbelt rainwater treatment method(0.0251)>Landscape water area(0.0176)>Road rainwater treatment method(0.0103)>Landscape water form(0.0094)>Building rainwater treatment method(0.0042).(3)Through comprehensive evaluation of water conservation indicators,it can be seen that the ranking of the comprehensive evaluation values of water conservation in the five parks is: People’s Park(3.6009)>Botanical Garden(3.4558)>Wuzhumu Park(3.4433)>Sports Park(3.3497)>Qingshan Hanmo Garden(2.9719).Based on the evaluation results,analyze the advantages and disadvantages of the parks with the highest and lowest scores,and use the People’s Park as the promotion model to promote the construction of water-saving parks in Wuhai City.