Abstract
Highly urbanized and scarcity of land resource have posed urgent need of threshold analyses of ecological services to achieve optimal ecosystem services efficiency. Whereas previous studies have highlighted the threshold value of efficiency (TVoE) of cooling service, the interval non-linear characteristic of TVoEs of recreational service and co-benefit in urban parks remain unclear, especially identifying the socioeconomic impact on the TVoEs. Taking Beijing as our study area, we identified the dominant impact factors on cooling, recreational services and co-benefit, and assessed the interval variation characteristics of TVoEs of these three services in diversely developed regions. The result indicated that park size and socioeconomic development were dominant factors. And interval-thresholding, which can determine the change interval and trip point, is innovatively used to analyze the relationship between park size and services. This relationship showed different characteristics in two intervals and the TVoE ranges of the parks’ co-benefit increased with the improvement of local socioeconomic level. These results can provide quantitative inputs for green space smart planning relating to climate change and public health considerations.
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