jgg     2009 29 (2):  13-18    ISSN: 0412-1961  CN: 21-1139/TG NUMERICAL SIMULATION OF ANNUAL CHANGE CHARACTERISTICS OF TECTONIC STRESS-STRAIN FIELD IN YUNNAN AREA Li Yujiang 1) ;Chen Lianwang 1) ; and Li Hong 2) 1) Institute of Crustal Dynamics, CEA, Beijing 1000852) Seismological Bureau of Beijing Municiplity, Beijing 100080 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null