| Study on spatial difference of safety threshold of agricultural water resources in Shaanxi Province |
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| DOI：10.7606/j.issn.1000-7601.2010.04.45 |
| Key Words: water resources safety threshold crops’water requirements food security Shaanxi Province |
| Author Name | Affiliation | | MA Juanxia | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China | | XIAO Ling | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China | | GUAN Shuaipeng | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China | | WU Shudong | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China | | CHENG Dongge | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China | | ZHANG Jun | College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710062, China |
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| Abstract: |
| On condition that food security is guaranteed in all cities of Shaanxi Province, this paper discusses the
minimum standard of water resources needed for agricultural production in these cities. Rice, wheat, maize, bean and
the consumption of meet, egg and milk are the main objects of study. The total volume of grain for these cities across the province can be got when the province’s annual average consumption per person is provided. The volume of water for irrigation can be calculated in which the minimum value is safety threshold. The results showed that Shaanxi’s agricultural water resources are not safe. By using GIS to analyze the safety threshold of agricultural water resources and the total water resource volume in each city within the province, this paper draws a conclusion that water resources in southern Shaanxi and Yulin city are safe, and the ratio is one , while the water resources of other cities are scarce ，and situations in Tongchuan, Weinan and Baoji in Guanzhong area are the most serious , where the ratio is much larger than one and the local water resources are far from enough to meet the needs of safety of agricultural production. |
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