Abstract:
In this study, we used sugar-inversion method to measure mountain ground surface temperature near timberline on the southern slope of Mt.Jade Dragon. Temperature contour map was drawn using the Kriging interpolation method in the GIS software,based on the data of field work on effective temperature at different topographical sites.Then we analyzed and discussed the ground temperature field characteristics and found that,①Altitude gradient was still the key factor influencing the pattern of surface temperature,which did not totally follow the temperature lapse law;②The forests, shrubs and meadows had different ground temperature respectively,and the difference between the above three underlying surfaces was significant.The effective temperature was higher in forests than in meadows and shrubs,while the meadows had higher variance than that in forest and shrubs;③ As the altitude increased,the temperature decreased in meadow while increased in the forest.Based upon the findings we hold that when the mountain ground surface temperature was analyzed at the landscape scale, the underlying surface,slope orientation along with the altitude should all be taken into account.