The service values' structure and change of different ecosystems of the protected area for water supply of city-taking the Yunlong reservoir of Kunming city as an example

摘要

It is very important to study the value change of ecosystem services of the protected area for water supply of cities to wholly know the law and status of ecosystem services and its value of the protected area for water supply, and to supply scientific basis and decision references for the sustainable use of water resources and the management of the protected area for water supply. The paper structured an assessment system consisted of five indexes (food production, gas adjusting, climate adjusting, hydrology adjusting, and waste treatment) on the basis of the classification of ecosystem and its services, used Gaodi Xie et al.'s method for valuing ecosystem service on the basis of experts' knowledge, and studied on the services' value change of different ecosystems of the Yunlong reservoir. The result showed that the three service values of gas adjustment, climate adjustment, and hydrological adjustment were formed into a core service value of the forest ecosystem of the protected area for water supply; under the premise of ensuring food production service value, waste disposal service value of farmland ecosystem occupied a main status; water area ecosystem focused on hydrological adjustment service and waste disposal service. The service value of food production was mainly contributed by the forest and farmland ecosystems; the other four adjustment service values were mainly contributed by forest ecosystem.