基于改进生态足迹模型的抚仙湖流域土地生态承载力评价

Evaluation of Land Ecological Carrying Capacity of the Fuxian Lake Basin Based on Improved Ecological Footprint Model

采用玉溪市2005~2016年社会经济统计数据及土地利用变更数据,基于改进的生态足迹模型测算2005~2015年抚仙湖流域人均生态足迹和土地承载力.结果表明:12年来,抚仙湖流域人均生态足迹呈现总体上升状态,由2005年的0.23340上升到2014年的0.24290,但上升幅度较小;土地生态承载力呈现下降趋势,从2005年的0.35956下降到2015年的0.25319,下降幅度较大,说明测算期内抚仙湖流域生态环境逐渐变差,生态承载力下降.

The ecological footprint and land carrying capacity per capita in the Fuxian Lake basin from 2005 to 2015 were calculated with the improved ecological footprint modelon the basis of the social-economy statistical data and land use change data in the years between 2005 and 2016.The results show that the ecological footprint per capita in the Fuxian Lake basin in the past 12 years saw a modest increase from 0.23340 in 2005 to 0.24290 in 2014 on the whole;the ecological carrying capacity of land sawa large decline from 0.35956 in 2005 to 0.25319 in 2015,indicating that the ecological environment of the Fuxian Lake basin was gradually getting worse and the ecological carrying capacity was decreasing in the period of calculation.