中文摘要：

本文利用高精度复测GPS网,用多面函数拟合的方法计算出中国大陆地壳运动速度场模型,得到了有实用价值的中国地壳平面运动整体速度场图像和垂直速率等值线图像,同时计算出ITRF97参考框架下中国大陆地壳运动的区域背景场,该局域背景场与NNR-NUVEL1A、Sillard、Larson等全球板块运动模型所提供的欧亚板块的欧拉极方向和旋转速率在量级和大趋势上是一致的.据此对全球框架下的中国大陆区域地壳运动特征进行分析.

英文摘要：

With the high precision repeated GPS observations, the multi--quadric equations interpolation method is used to establish the speed field model of China mainland crustal movement. The valuable present--day horizontal and vertical crustal movement velocity images are obtained. The background field model of China mainland in ITRF97 frame is also computed by GPS velocity observations. The local background field model is largely consistent with Eu- rope --Asia tectonic plate＇s Euler direction and the spin rate provides by some global background field models such as NNR--NUVELIA model, Sillard model and Larson model in the magnitude and the major tendency, with which we can analyze the characteristics of crustal movement in the China mainland.