Urban land use is a huge and complex system, it is include the macro issues and micro issues, both economic efficiency, but also social and environmental benefits issues.
城市土地利用是一项巨大而复杂的系统，这里面既有宏观问题，也有微观问题，既有经济效益问题，也有社会效益和环境效益问题。
The low efficiency comprehensive arable land use in Chongqing, mainly by the ecological and social benefits.
重庆市耕地利用的经济效益较好，但抗风险能力较低，自然灾害等对经济效益有显著的负效应。
The results showed that the land-use economic-efficiency, social-efficiency, eco-efficiency and the three's coordination were increasing year by year.
结果表明，成都市土地利用经济效益、社会效益、生态效益及综合效益协调度均呈逐年增加态势。
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