中文摘要：

利用1958-2006年日喀则和玉树观测的历年各月平均地面（0cm）温度和气温（百叶箱）资料，采用新量纲重新计算并续补了48年的青藏高原地面加热场强度距平指数。结果表明，青藏高原地面加热场强度存在后延1～2个月的显著相关，干季具有较好的持续性。除存在明显的年际和年代际变化特征外，总体表现出春、夏季由弱变强，秋、冬季由强变弱，且具有稳定而显著的准11年和17年周期。持续的太阳黑子数偏少对青藏高原地面加热场强度的增强具有明显的指示性；太阳黑子周期长度（SCL）变长（太阳活动减弱）时，青藏高原地面加热场强度减弱。通过初步分析认为，太阳活动是引起青藏高原地面加热场强度变化的重要原因之一。

英文摘要：

Using the data of the 0 cm ground temperature and air temperature at Rikaze and Yushu observation stations through the each month average of years from 1958 to 2005, adopted the new quantity key link recount to combine to repair strength departure indices of surface heating fields over Qinghai-Xizang Plateau（QXP） of continuous 48 years. The analyzed result show that the strength departure indices of surface heating fields over QXP exist significant correlation in one to two month lags, but better continuity in dry season. In addition to the having obvious interannual variability and the interdecadal changecharacteristics, it is total to express from weak to strong in spring and summer, from strong to weak in autumn and winter, and they have a stability and remarkable quasi-11 year and 17 year periods. It has obvious designation that the sunspot number keep on decrease to surface heating fields over QXP intensi ty. The surface heating fields over QXP die down when sunspot cycle length （SCL） become long（the sun activity die down）. Through the primary analyzing, we think that the sun activity is to cause the one of the important reasons of surface heating field change over QXP.