Emergy Analysis of Oasis Agricultural Economic Ecosystem in Yanqi Basin

From the angle of emergy,taking the region of arid inland as the representation region,based on statistical data in 2006 in Yanqi basin,Xinjiang,energy inputs and outputs of planting economic ecosystem are analyzed for the first time.The result shows:the unrenewable industrial assistance emergy occupyies 54.7% and the renewable emergy only occupies 44.98% of the total devotion(renewable environmental resources occupies 8.11%,renewable organic occupies 36.87%) in this area,which indicates that the agricultural production excessively relies on the devotion of extraneous unrenewable assistance emergy.In addition,the characteristic is the low transformation rate of solar emergy,the high net emergy output rate and the low environmental loading rate,which indicates that the general level of development,the environmental pressure is relatively small in this area.In conclusion,the exploitation of free environmental resources will not cause the destruction of the ecological environment.