中文摘要：

结合中国及邻区的数据，利用界面上下的平均密度差，计算了物质界面起伏对大地水准面的影响，发现莫霍界面的影响占地形质量影响的70％左右，验证了均衡补偿理论．同时也发现，即便加上结晶基底起伏和岩石圈底面起伏的影响，也仅仅是补偿了由地形质量引起的大地水准面起伏的中长波部分，而短波长的地形影响仍然存在．

英文摘要：

The effect of interface undulations on the geoid in China and its adjacent regions is calculated on the basis of the average density differences of the interfaces in this paper. The result shows that the effect of MOHO interface accounts for about 70 % of the topographical effects, which validates the topography-isostatic theory. It is concluded that the topographical effects can not be fully compensated even if sediment undulation and lithosphere bottom undulation are considered. Actually, only the middle- and long-wavelength parts of geoid undulations are compensated, however the short-wavelength parts of topographical effects still exist.