随着人均可用水量的不断下降，灌溉农业必须提高水资源利用效率，同时进一步采用有利于环境的经营和管理方式。
As per capita water availability decreases, irrigated agriculture will have to be more efficient in water use as well as more environment friendly in operation and management.
结果表明，碳强度与人均GDP、能源效率、工业增加值比重之间存在长期均衡关系。
The results show that there is a long-term equilibrium relationship of China's carbon intensity with GDP per capita, energy efficiency and industrial value added.
然后用东部沿海地区的人均占地和地均产出两个指标估算了东部沿海地区城市土地利用效率，并分析影响用地效率的因素。
In this paper, the title is the urban expansion and land-use efficiency research in China's eastern coastal areas, aim is to explore the rule of urban expansion and land use efficiency.
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