The Assessment Of The Ecosystem Services And Spatial Pattern Of Typical Urban Wetland In Qinghai Province

Ecosystem services are natural capitals that provide great value,accurately accounting for their true value to society.This is beneficial to bring ecological benefits into the evaluation system of economic and social development,and has important practical significance and decision-making reference for the implementation of ecological civilization construction as soon as possible.Taking the Huangshui Wetland Park as a case area,combined with field survey data,experimental analysis data and social survey data,using the functional value method and break point model,the wetland value and its spatial distribution pattern characteristics of the park were obtained.The results show that:（1）The total value of the 15 ecosystem services from the Huangshui National Wetland Park was 6.18×108 Yuan in 2020,and the service value per unit area was227,100 yuan·hm^-2.According to the value,the order of the four services is cultural services,regulation services,support services and supply services.The value of each ecosystem services from high to low is:humidification>recreation services>heritage value>existence value>surface water storage>river sediment transport>culture and education research>temperature regulation>biodiversity protection>ecological and environmental water use>air filtration>oxygen release>carbon fixation>sewage treatment>harvestable plant products.（2）Among the five wetland parks,Huangshui River has the highest value,followed by Beichuan wetland and Haihu wetland,and finally Huoshaogou and Ninghu wetland;the core service types are mainly climate regulation based on humidification,and cultural services based on heritage value,existence value and leisure and entertainment.（3）There is spatial circulation of ecosystem services in the Huangshui National Wetland Park,and Huangshui River is the ecological center for other parks to provide ecosystem services;The Haihu Wetland,Huogou Wetland and Beichuan Wetland not only affect other parks,but also are affected by other parks.The Ninghu Wetland is affected by four other parks.（4）The distribution range of the total value of the five parks is in descending order:Ninghu wetland、Beichuan wetland、Huangshui River、Haihu wetland and Huoshaogou.There are intersecting areas in the distribution of parks,which form one excellent electoral district and five sub-electoral districts.The above overlapping areas are all the important residential,cultural and commercial areas in the urban area of Xining.（5）The spatial distribution and total value distribution of the three core services of the Huangshui National Wetland Park,including humidification,recreation and heritage value,are determined by the contribution rate of the services to the total value of the park.