Qing Sheng Liu⁽¹⁾ Gao Huan Liu⁽¹⁾ Ling Yao⁽²⁾

(1)Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing，P.R. China, 100101
(2)College of Resources and Environmental Science,Wuhan University, Wuhan, Hubei，P.R. China, 430072

Abstract: Based on the multi-temporal Landsat TM/ETM+ data acquired from 1992 to 2001, integrated with a history of robinia pseudoacacia planted forest in the Yiqianer nature reserve of Yellow River Delta, robinia pseudoacacia planted forest changes following the super storm surge of Sept. 1992 and Aug. 1997 are analyzed. As a whole, the total area of robinia pseudoacacia planted forest continually decreased after the super storm surge of Sept. 1992 in the Yiqianer nature reserve. Before the super storm surge of Sept. 1992, the total area of robinia pseudoacacia planted forest was about 307.44 hm2, but the total area decreased to about 176.85 hm2inOct. 1993 and 110.34 hm2inOct. 1995 after the super storm surge of Sept.1992. Although the total area came back to about 138.69 hm2inSept. 1996, the super storm surge of Aug. 1997 destroyed the robinia pseudoacacia planted forests again, and its total area sharply decreased to 41.31 hm2inOct. 1997 and 34.02 hm2inMay 1998 and 38.70 hm2inJune 1999 and 29.70 hm2inMay 2000. Thus it can be seen that defending the robinia pseudoacacia planted forest against super storm surge is very important for forest ecosystem health.

Key words: Robinia pseudoacacia planted forest, Yiqianer nature reserve, Super storm surge，Dynamic change