Distribution of Mangrove in Fujian Province

Three temporal Landsat TM/ETM+images such as 1989,1993 and 2001 were used to investigate the changes of mangrove in Fujian Province. Methods of expert systems were applied to classification of mangrove with distribution of mangrove with combination of various rules. SPOT images and supplementary data were also used to analyze distribution of mangrove in 2003 by handle interpretation following changing spatial resolution from 2.5m×2.5m to 30m×30m. Results showed the fluctuations for distribution of mangrove in the past 14 years. Areas of mangrove were reduced from 134.52hm2 in 1989 to 128.14hm2 in 1993,and rapidly increased to 199.20hm2 in 2001 and 213.2hm2 in 2003. Results implied that artificial mangrove increased but natural mangrove was being destroyed seriously in Fujian. Main factors influencing distribution of mangrove based on historic data and literatures were reviewed,and some advises for protecting mangrove resource were proposed.