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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
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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
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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 mean |
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