However, the changes in PSV and SSV were relatively complex, initially showing an increasing trend followed by a gradual decrease, with the threshold for this transition ranging between HAI values of 0.176 and 0.262.
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Exploring the threshold of human activity impact on urban ecosystem service value: a case study of Hefei, China.
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The sentences
In the risk detector analysis with a confidence level of 95%, as the HAI increased, the ESV, RSV, and CSV generally exhibited a decreasing trend, becoming negatively correlated.