Ecological capacity assessment of mangrove in Guangxi Beibu Gulf
HU Xia, MO Chuang-rong*, ZHOU Yun-xin, LI Xiao-ming, LI Yan
1. School of The Environment, Guangxi University, Nanning 530004, China; 2. Environmental Protection Bureau of Nanning, Nanning 530022, China; 3. School of The Environmental Science and Engineering, Hunan University, Changsha 410082, China
In order to make a quantitative analysis about ecological capacity change of mangrove in the development of Guangxi Beibu Gulf Economic Zone, Zhenzhu Bay, Tieshan Bay, Qinzhou Bay and Lianzhou Bay were chosen as study sites. The data of remote sensing images in 2004, 2006, 2008 and 2010 were obtained by using RS and GIS techniques, combining the state-space model as well as the indicator system of ecological capacity assessment of mangrove. The changes of ecological capacity and the correlation about ecological capacity of mangrove with the resources supply, ecosystem resilience, environmental tolerance and human activities potential of mangrove were analyzed. The results showed that the trend of ecological capacity of mangrove improved gradually in Guangxi Beibu Gulf. Resources supply and environmental tolerance of mangrove declined gradually. Environmental tolerance was influenced by the development of Beibu Gulf Economic Zone, but the ecological capacity of mangrove was not influenced. The human activities potential is the key factor determining the ecological capacity of mangrove.