Acta Geographica Sinica, Volume. 75, Issue 8, 1699(2020)
Figures & Tables(11)
Fig. 2. Changes of cotton production, planting area, per unit area yield in China from 1950 to 2015
Fig. 3. Range of variation of cotton yields in China from 1950 to 2015
Fig. 4. Change distribution of cotton planting area in China from 1950 to 2015
Fig. 5. Range of variation of per unit area cotton yield in China from 1950 to 2015
Fig. 6. Comparison of standard deviation ellipse of cotton yields (a) and planting area (b) in China from 1950 to 2015
Fig. 7. Gravity movement of cotton yields and planting area at national level (a), I (b), II (c) and III (d) in China
Fig. 8. Proportions of contribution rates of dominant regions in different yields
Table 1. Variation coefficient of cotton production, planting area and per unit area yield in China from 1950 to 2015
View tableView in ArticleTable 1. Variation coefficient of cotton production, planting area and per unit area yield in China from 1950 to 2015
变异系数 1950年 1965年 1980年 1995年 2010年 2015年 产量 1.82* 1.70* 1.50* 1.38* 1.88* 3.02* 面积 1.59 1.58 1.48 1.33 1.67 2.57 单产 0.54 1.63 1.23 0.83 0.40 0.83
Table 2. Variation coefficient of cotton production in different planting regions of China from 1950 to 2015
View tableView in ArticleTable 2. Variation coefficient of cotton production in different planting regions of China from 1950 to 2015
变异系数 长江流域棉区 黄河流域棉区 西北内陆棉区 产量 0.43 0.52 1.52* 面积 0.20 0.24 1.10* 单产 0.44 0.55 0.74*
Table 3. Proportions of contribution rates of cotton yields in each dominant region of China in different stages (%)
View tableView in ArticleTable 3. Proportions of contribution rates of cotton yields in each dominant region of China in different stages (%)
时段 长江流域棉区 西北内陆棉区 黄河流域棉区 面积 单产 面积单产共同作用 面积 单产 面积单产共同作用 面积 单产 面积单产共同作用 1950—1965年 22.61 30.27 28.74 52.38 9.52 15.87 26.85 48.61 18.98 1965—1980年 18.77 46.74 16.86 34.92 26.98 19.05 20.37 52.78 22.22 1980—1995年 30.65 37.55 15.33 47.62 19.05 20.63 50.93 30.56 13.43 1995—2010年 55.56 19.16 16.86 61.90 9.52 26.98 62.04 17.13 17.13 2010—2015年 57.47 26.44 9.20 66.67 9.52 14.29 68.06 11.11 8.33
Tools
Get Citation
Copy Citation Text
Chunyue MA, Sawut Mamat, Jie YAO, Isak Gulnur.
Paper Information
Received: May. 7, 2019
Accepted: --
Published Online: Apr. 14, 2021
The Author Email: Mamat Sawut (korxat@xju.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20