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[1]LI Xiaohu,YANG Degang.Study of the Structure Optimization of Water-Saving Suburban Cropping in Arid Lands Based on the Water Footprint—A Case Study in Urumqi City[J].Research of Soil and Water Conservation,2017,24(01):298-304.

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Study of the Structure Optimization of Water-Saving Suburban Cropping in Arid Lands Based on the Water Footprint—A Case Study in Urumqi City

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 01 Page number: 298-304 Column: Public date: 2017-02-28

Title:: Study of the Structure Optimization of Water-Saving Suburban Cropping in Arid Lands Based on the Water Footprint—A Case Study in Urumqi City

Author(s):: LI Xiaohu¹, YANG Degang²; 1. College of Tourism, Xinjiang University of Finance and Economics, Urumqi 830012, China;
2. Xijiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China

Keywords:: water footprint; optimization of suburban planting; model of linear programming; Urumqi City

CLC:: F323.213;F326.1;X824

DOI:: -

Abstract:: Cropping systems have been developed in the outskirts of oasis cities, which had intensified water scarcity. The water footprint method can be used to comprehensively and clearly describe the characteristics of crop water consumption, and can be used as a guide to develop sustainable cropping and suitable use of water resources by adjusting cropping structure based on the water footprint in arid land. We selected Urumqi City as a typical oasis city in the arid area. We analyzed the water consumption of crops in Urumqi City using the water footprint model, and considered the factors of economy, ecology, and society. A new multiobjective programming (MOP) model of planting structure was generated based on the water footprint in order to analyze adjustment programs for water-saving suburban planting in arid lands. This study revealed the following findings. The sustainable project had characteristics of a low blue and grey footprint, higher profit, and suitable farmland scale. Urumqi City can focus on the following approaches in order to optimize its cropping structure. Based on the results of the study, the total cropping area in 2015 should be limited to approximately 6.65×10⁴ hm², with a ratio of 35∶49∶16 of grain and oil crops, fruits and vegetable crops, and other crops. The first objective in the near future is to reduce the planting areas growing crops with high consumption of blue water, such as grain and oil crops. The second is to increase the acreage of fruits and vegetables utilizing less blue water. In addition, the rate of fertilizer utilization should be improved. Thus, the water use efficiency of cropping systems can be improved and water pollution can be reduced in order to achieve structural optimization.

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