1981-2017年西藏“一江两河”流域5 cm地温及其界限温度时空变化特征

杜军,胡军,尼玛吉,次旺顿珠

Spatial-temporal change of mean soil temperature and its critical temperature at 5 cm depth in the region of the Yarlung Zangbo River and its two tributaries of Tibet during 1981-2017

DU Jun,HU Jun,Nimaji ,Ciwangdunzhu

图6 5 cm地温≥ 12 ℃的初日、终日、持续日数和积温与经度的散点图

Fig. 6 The relationship between the beginning day (a), terminal day (b), duration (c) and accumulated temperature (d) of the daily soil temperature at 5 cm depth above 12℃ stably and longitude in the region of the Yarlung Zangbo River and its two tributaries of Tibet