1996—2015年黄河源区植被覆盖度提取和时空变化分析
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王俊奇, 王广军, 梁四海, 杜海波, 彭红明
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Extraction and spatio-temporal analysis of vegetation coverage from 1996 to 2015 in the source region of the Yellow River
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Junqi WANG, Guangjun WANG, Sihai LIANG, Haibo DU, Hongming PENG
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表3 黄河源1996—2015年植被覆盖度面积及比例
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Table 3 Area and proportion of vegetation coverage in the source region of the Yellow River from 1996 to 2015
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年份 | 裸地 | 低覆盖 | 中低覆盖 | 中覆盖 | 高覆盖 |
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面积/km2 | 比例/% | 面积/km2 | 比例/% | 面积/km2 | 比例/% | 面积/km2 | 比例/% | 面积/km2 | 比例/% |
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1996 | 6 374 | 14.69 | 8 202 | 18.90 | 5 449 | 12.55 | 5 407 | 12.46 | 17 971 | 41.40 | 2000 | 6 000 | 13.82 | 7 845 | 18.07 | 5 905 | 13.61 | 5 784 | 13.33 | 17 871 | 41.17 | 2004 | 10 821 | 24.93 | 8 797 | 20.27 | 5 660 | 13.04 | 5 693 | 13.12 | 12 433 | 28.65 | 2006 | 6 775 | 15.61 | 7 654 | 17.63 | 5 698 | 13.13 | 5 221 | 12.03 | 18 056 | 41.60 | 2008 | 8 709 | 20.06 | 8 250 | 19.01 | 5 441 | 12.54 | 5 305 | 12.22 | 15 699 | 36.17 | 2013 | 4 601 | 10.60 | 7 337 | 16.90 | 5 717 | 13.17 | 5 486 | 12.64 | 20 262 | 46.68 | 2015 | 5 218 | 12.02 | 7 653 | 17.63 | 5 971 | 13.76 | 5 106 | 11.76 | 19 456 | 44.83 |
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