Journal of Geographical Sciences ›› 2020, Vol. 30 ›› Issue (10): 1590-1602.doi: 10.1007/s11442-020-1801-0
• Research Articles • Previous Articles Next Articles
SHI Wenjiao1,3(), LU Changhe1,3, SHI Xiaoli2, CUI Jiaying2
Received:
2020-06-18
Accepted:
2020-08-06
Online:
2020-10-25
Published:
2020-10-27
Contact:
SHI Wenjiao
E-mail:shiwj@lreis.ac.cn
Supported by:
SHI Wenjiao, LU Changhe, SHI Xiaoli, CUI Jiaying. Patterns and trends in grain self-sufficiency on the Tibetan Plateau during 1985-2016[J].Journal of Geographical Sciences, 2020, 30(10): 1590-1602.
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Table 1
Revised methods for calculating grain supply and demand in marginal counties of the Tibetan Plateau"
County | Adjustment in grain production (Pall) | Adjustment in grain consumption (Call) |
---|---|---|
Minle | Pall × 0.005 | Call × 0.002 |
Shandan | Pall × 0.001 | Call × 0.001 |
Qiemo | Pall × 0.014 | Call × 0.024 |
Yutian | Pall × 0.006 | Call × 0.017 |
Minfeng | Pall × 0.042 | Call × 0.033 |
Table 2
The changes of capacity for grain self-sufficiency in different provincial-level regions that comprise the Tibetan Plateau between 1985 and 2016"
Provincial component | Period | Production (×104 t) | Consumption (×104 t) | Self-sufficiency rate (%) | Supply-demand gap (×104 t) |
---|---|---|---|---|---|
Sichuan | 1985-1989 | 113.35 | 79.24 | 143.05 | -34.11 |
1990-1999 | 125.92 | 82.59 | 152.47 | -43.33 | |
2000-2009 | 122.62 | 79.89 | 153.49 | -42.73 | |
2010-2016 | 135.03 | 70.83 | 190.63 | -64.20 | |
Yunnan | 1985-1989 | 55.50 | 35.04 | 158.37 | -20.46 |
1990-1999 | 66.98 | 45.53 | 147.09 | -21.44 | |
2000-2009 | 79.70 | 40.36 | 197.48 | -39.34 | |
2010-2016 | 99.59 | 38.35 | 259.67 | -61.24 | |
Gansu | 1985-1989 | 54.78 | 64.10 | 85.47 | 9.31 |
1990-1999 | 64.35 | 72.12 | 89.22 | 7.77 | |
2000-2009 | 76.92 | 78.98 | 97.39 | 2.06 | |
2010-2016 | 99.66 | 61.82 | 161.20 | -37.83 | |
Xinjiang | 1985-1989 | 0.82 | 1.78 | 46.16 | 0.96 |
1990-1999 | 1.19 | 2.06 | 57.49 | 0.88 | |
2000-2009 | 1.26 | 2.25 | 55.85 | 1.00 | |
2010-2016 | 2.67 | 2.92 | 91.32 | 0.25 | |
Tibet | 1985-1989 | 51.74 | 39.22 | 131.94 | -12.52 |
1990-1999 | 70.35 | 49.98 | 140.77 | -20.37 | |
2000-2009 | 94.41 | 64.63 | 146.07 | -29.78 | |
2010-2016 | 96.86 | 71.77 | 134.96 | -25.09 | |
Qinghai | 1985-1989 | 105.08 | 83.39 | 126.01 | -21.69 |
1990-1999 | 113.32 | 93.31 | 121.44 | -20.01 | |
2000-2009 | 88.84 | 91.67 | 96.91 | 2.83 | |
2010-2016 | 124.61 | 76.68 | 162.50 | -47.92 |
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