5 a, d, g, j), the magnitude and extent of MHSR showed a trend of increasing and then decreasing in different regions of China, especially MHSR decreased in Northeast China, North China and the east-central region of Northwest China in 2100.
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6 a), MHSR first increased and then showed a decreasing trend under SSP126, with an overall increase of 0.00049/year, while MHSR showed a continuously increasing trend under SSP245 and SSP585, with 0.00108/year and 0.00308/year, respectively.
Firstly, it can be seen from the spatial evolution that the extent and magnitude of MHSR in Northeast China, North China, and the eastern regions of Northwest China showed an increasing trend before decreasing, and the extent of MHSR in South China and Southwest China increased before decreasing under SSP126.