河南省冬小麦种植频率时空变化及影响因素分析
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李方杰,任建强,吴尚蓉,陈仲新,张宁丹
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Spatio-Temporal Variations of Winter Wheat Planting Frequency and Their Analysis of Influencing Factors in Henan Province
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FangJie LI,JianQiang REN,ShangRong WU,ZhongXin CHEN,NingDan ZHANG
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表1 河南省冬小麦分布提取样点数量(2001—2015年)
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Table 1 Number of samples for winter wheat area extraction in Henan province (2001-2015)
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年份 Year | 地面样点 Ground samples | Google Earth样点 Google Earth samples | 训练样点 Training samples | 冬小麦 Winter wheat | 非冬小麦 Non-winter wheat | 总计 Total | 冬小麦 Winter wheat | 非冬小麦 Non-winter wheat | 总计 Total | 冬小麦 Winter wheat | 非冬小麦 Non-winter wheat | 总计 Total | 2001 | — | — | — | 1145 | 1073 | 2218 | 295 | 423 | 718 | 2002 | — | — | — | 1165 | 1118 | 2283 | 315 | 468 | 783 | 2003 | — | — | — | 1155 | 1101 | 2256 | 305 | 451 | 756 | 2004 | — | — | — | 1095 | 1150 | 2245 | 245 | 500 | 745 | 2005 | — | — | — | 1100 | 1117 | 2217 | 250 | 467 | 717 | 2006 | 39 | 42 | 81 | 1129 | 1081 | 2210 | 318 | 473 | 791 | 2007 | 53 | 54 | 107 | 1027 | 1026 | 2053 | 230 | 430 | 660 | 2008 | 44 | 41 | 85 | 1027 | 1024 | 2051 | 221 | 415 | 636 | 2009 | 47 | 45 | 92 | 1043 | 1115 | 2158 | 240 | 510 | 750 | 2010 | 45 | 45 | 90 | 1015 | 1105 | 2120 | 210 | 500 | 710 | 2011 | 51 | 53 | 104 | 1049 | 1022 | 2071 | 250 | 425 | 675 | 2012 | 57 | 58 | 115 | 1073 | 1057 | 2130 | 280 | 465 | 745 | 2013 | 62 | 60 | 122 | 1023 | 999 | 2022 | 235 | 409 | 644 | 2014 | 69 | 71 | 140 | 998 | 1006 | 2004 | 217 | 427 | 644 | 2015 | 71 | 70 | 141 | 984 | 995 | 1979 | 205 | 415 | 620 |
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