| Analysis of the arable pressure on large-scale irrigation areas in the arid regions of northwest China under different food consumption patterns |
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| DOI：10.16302/j.cnki.1000-7601.2015.01.040 |
| Key Words: arable pressure index arable pressure food supply re-carrying population relationship between population and food production arid region of northwest China large-scale irrigation area |
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| Abstract: |
| Based on the arable pressure index (API) model, the APIs of large-scale irrigation areas in arid regions of northwest China were calculated, and the conditions of food supplies and re-carrying population were analyzed under different food consumption patterns. The results showed that the overall APIs were still low, average arable pressure indexes (K values) of three patterns were less than or equal to 1, and the relationship between population and food production was relatively harmonious, although there were obvious differences in APIs of 97 irrigations under different food consumption patterns. In addition to supplying food for self-consumptions, there was still respectable amount of surplus food, which was 869.19, 586.18 and 41.46 ten thousand tons, respectively, under the economic society of balanced diet (PH), a comfortable level of living (XK), and relatively comfortable society (FY). The re-carrying populations were 2698.75, 1465.46, and 75.38 ten thousand people, respectively. The results could be used to provide data and theoretical bases for assessing the status of arable land resources in the northwest arid areas. |
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