中文摘要：

采用“中国大陆构造环境监测网络”2009-2011年GPS监测站点的速度场结果，利用三角形法计算了青藏高原东缘的应变场，并对计算结果进行三角形形状因子检验和应变显著性检验。根据块体应变变化特性将其分为块体内部、块体边缘和块体边界三个典型区域。对各区域应变结果的分析表明：青藏高原东缘的龙门山断裂带成为区域内应变的高值区，反映自汶川Ms8．0地震之后出现了地壳松弛与大区域形变的调整。鲜水河断裂仍然是区域内应变较大的地区。

英文摘要：

Current strain field in the eastern margin of the Tibetan Plateau was calculated with the triangle methodthe triangle method using observation data of the Continental Tectonic Environmental Monitoring Network of China during the period of 2009-2011, and calculated results were tested with Triangular shape factor and strain significance. The observation region is divided into interior, edge and boundary according to the obtained strain characteristics. Longmenshan fault zone of the eastern margin of the Tibetan Plateau has become a district wiyh high values of strain after Ms8.0 Wenchuan earthquake, which reflects the block relaxation and deformation adjustment after the earthquake. Xianshuihe fault is still a district with largest strain, and it＇ s very important to monitor it con- tinuously.