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In order to construct the indicators of the balance between supply and demand of the cultivated land ecological carrying capacity,basing on the relation of the cultivated land ecological carrying capacity supply and demand,applying the model of "Cultivated Land Ecological Footprints Method" and the method of GIS and considering the factors of cultivated land production revised by Wackernagel,taking the data of the of 2009 as an example,and then made a systematic evaluation of the balance between supply and demand of the cultivated land ecological carrying capacity of Chongqing.The results indicated that:(1) at the aspect of space: the supply-demand balance of cultivated land ecological carrying capacity of Chongqing city is imbalanced,ranged from significant overloading to affluence from east to west,and the area of overloading coincide with Chongqing Main City;(2) at the number of counties or districts: the most cultivated land ecological deficit area is Chongqing Main City,then the affluent and balanced areas;(3) as the number of population: it′s the same situation as the number of counties or districts;(4) as the proportion of the land: the affluent area is the most rate,then the balanced and deficit areas.According to the results,3/5 of the population in Chongqing lived on the 4/5 of the affluent or balanced cultivated land,and the other 2/5 of the population distributed on the 1/5 ecological deficit cultivated land.All in all,the research can provide the ecological security of the area cultivated land,the overall plan of land use and sustainable development of the area land with scientific evidence and decision support. |
