【摘要】 介绍了在山西太钢（ 集团） 有限公司地震台进行合欢树地震观测的震例，总结了合欢树生物电位地震前兆异常的形态及观测成果。认为合欢树的映震性能较好，一般在震前几小时到几天合欢树生物电位会出现异常。在１００ ｋｍ 以内对３－０ 级以上地震的映震率达８０ ％ ，在５００ ｋｍ 以内对４－５ 级以上地震的映震率达７７ ％ ，在１ ０００ ｋｍ 以内对５－５ 级以上地震映震率为６６ ％ 。更多还原

【Abstract】 The earthquakes of observation to silk tree in Earthquake Observation Station of Taiyuan Steel Group Company are introduced .The precur sor shape and observation achievement of bioelectric potentials of silk tree is sum marized .It is thought that silk tree have the preferable reflecting earthquake ability . Generally ,th e precursor anomalies of bioelectric potential of silk tree appeared in several hour and several days before earth quake .The reflecting ratio of greaterthan 3 .0 magnitude earthquake reaches 80 percentin 100km .The reflecting ratio of grea ter than 4 .5 magni tude earthquake reaches 77 percent in 500 km . The reflecting r atio of greaterthan 5 .5 magnitude earthquake reaches 66 percent in 1 000 km .更多还原