中文摘要：

介绍了应力释放模型、耦合应力释放模型及其在时、空两个方面经过改进的模型。利用改进后的模型研究了青藏高原地区的地震活动，结果显示，在青藏高原地区改进后的应力释放模型仍然适用，并且改进后的耦合应力释放模型要优于简单的应力释放模型，其预测地震的效能和精度都要优于泊松模型。

英文摘要：

The Stress Release Model （SRM）, Coupled Stress Release Model （CSRM） and their modified ones are briefly introduced, and the modified SRM and CSRM are used to study the seismicity in Qinghai-Tibet Plateau, respectively. The calculated results show that the modified SRM and CSRM can still hold true in the plateau, and the modified CSRM is superior to the modified SRM. The accuracy of earthquake occurrence time predicted by the modified models is higher than that by the Poisson model.