Aiming at fifteen indices of the population the gross regional production, the fiscal revenue and expenditure, agriculture, industry, service, the annual precipitation of Hunan province from the years of 2000 to 2010, as well as the historical data on the area of Hunan＇s public welfare forest, this paper firstly decided the economy ＆ population development level and the natural environment level as the two main ingredients of the variation of public welfare forest with the method of main ingredient analysis, then both the quantitative forecas...
