Fuzzy Synthetic Assessment of Regional Ecosystem Quality——Case study from July to September, 2006 in Fujian Province
Taken the indexes of humid, vegetation cover, water proportion, land degradation and natural disaster as assessment indicators, the regional ecosystem quality was assessed by Fuzzy synthetic method, based on the data of ground observation and land use from July to September, 2006 in Fujian Province. The results showed that the ecosystem quality in the different counties of Fujian Province were all fine. The synthetic values were between 0.54 and 0.67 with small differences, which corresponded with the particular characteristics of climate, physiognomy and ecosystem of Fujian province.
The paper sets up a model for forcasting population analgsis,grey system theory and statistics of Benxi population~ between 1990 and 1999.The use of this model proves that the result gained with the methods presented in the paper is nearly in agreement with the fact.