Evaluation and spatial distribution of ecosystem services in the Beijing-Tianjin-Hebei region
[Objective]The high-quality coordinated development of Beijing-Tianjin-Hebei requires scientific identification,division and pro-tection of key ecological functional areas to further improve the quality and stability of the ecosystem.[Methods]Based on the"Double evaluation"guideline and the"Guideline for delineating the Red Line of Ecological Protection",this paper took the Beijing-Tianjin-Hebei region as the research area,and carried out the evaluation of the importance of ecosystem service functions from four aspects:water conservation,soil and water conservation,biodiversity,and wind and sand prevention with analytic hierarchy process.The comprehensive evaluation results divided the importance of ecosystem service functions into three levels:very important,impor-tant and generally important,and further analyzed the importance and spatial distribution characteristics of ecosystem service func-tions in Beijing-Tianjin-Hebei.[Results]The results showed that:(1)The evaluation area of the importance of water conservation,soil and water conservation,biodiversity,wind and sand fixation in the study area decreased from the general important to the very important.The area of water conservation service function is very important,accounting for 13.72%;The area of extremely impor-tant soil and water conservation function accounted for 15.20%.25.33%of the areas were very important for biodiversity conserva-tion.The area of the extremely important function of wind prevention and sand fixation accounted for 11.32%.(2)The importance of ecosystem service functions in the study area showed the spatial distribution characteristics of high in the north and low in the south,and the area showed a decreasing distribution from generally important to extremely important.The area of extremely important eco-system service function is 34617.76 km2,about 16.03%of the total area.(3)Forest land,grassland and a small part of cultivated land accounted for 68.74%,16.74%and 10.86%,respectively,in the extremely important ecosystem service function area.It indicates that the vegetation coverage is higher and human activities are less in the extremely important area.[Conclusions]The spatial distri-bution of ecosystem service importance in the study area is relatively uneven,and the overall distribution is dominated by the gener-al important area.In addition,vegetation such as forest and grassland plays an important role in maintaining the stability and service function of the ecosystem in the study area.
Importance of ecosystem service functionHierarchical analysisSpatial distributionBeijng-Tianjin-Hebei region
万方数据
维普
