基于GIMMS 3g NDVI的近30年中国北部植被生长季始期变化研究
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李净, 刘红兵, 李彩云, 李龙
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Changes of Green-up Day of Vegetation Growing Season Based on GIMMS 3g NDVI in Northern China in Recent 30 Years
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Jing Li, Hongbing Liu, Caiyun Li, Long Li
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| 表1 中国北方生长季始期与气温和降水相关性 |
| Table 1 Statistics of correlation of green-up day between temperature and precipitation in north of China |
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| 相关性 | 生长季始期与气温 | | 生长季始期与降水 | | 系数范围 | | 像元个数 | 百分比（%） | 系数范围 | 像元个数 | 百分比（%） | | 显著正相关 | -0.7~-0.5 | 483 | 1.26 | | -0.8~-0.5 | 208 | 0.54 | | 较显著正相关 | -0.5~-0.3 | 4464 | 11.62 | -0.5~-0.3 | 2431 | 6.33 | | 弱正相关 | -0.3~-0.1 | 12237 | 31.86 | -0.3~-0.1 | 9613 | 25.03 | | 基本不相关 | -0.1~0.1 | 13913 | 36.22 | -0.1~0.1 | 15377 | 40.03 | | 弱负相关 | 0.1~0.3 | 6670 | 17.36 | 0.1~0.3 | 9626 | 25.06 | | 较显著负相关 | 0.3~0.5 | 1179 | 3.07 | 0.3~0.5 | 1636 | 4.26 | | 显著负相关 | 0.5~0.7 | 52 | 0.14 | 0.5~0.6 | 107 | 0.28 |
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