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1961—2019年三江源地区季节冻土冻融状态时空变化及影响因素研究
梁奔奔1,2(), 李晓东1,2(), 张东1,2, 申燕玲1,2
Study on spatiotemporal changes of the freeze-thaw status of seasonally frozen ground and influencing factors in the Three Rivers Source Region from 1961 to 2019
Benben LIANG1,2(), Xiaodong LI1,2(), Dong ZHANG1,2, Yanling SHEN1,2

图9. 1961—2019年三江源地区季节冻土冻融状态与影响因子相关性(**表示通过P<0.01显著检验,*表示通过P<0.05显著检验,ALT为海拔,Lat为纬度,Lon为经度,SD为雪深,PRE为降水,MAAT为年平均气温,MAGST为年平均地表温度,TI为融化指数,FI为冻结指数)

Fig. 9. Correlation between maximum freeze depth, each freeze-thaw state variable in the Three Rivers Source Region from 1961 to 2019 and impact factors: maximum freeze depth (a), the first date of soil freeze (b), the last date of soil thaw (c) and freeze-thaw duration (d) (** indicate effectiveness is certificated (P<0.01), * indicate effectiveness is certificated (P<0.05), ALT is altitude, Lat is latitude, Lon is longitude, SD is snow depth, PRE is precipitation, MAAT is meanannual air temperature, MAGST is mean annual ground surface temperature, TI is thawing index, and FI is freezing index)