中国稻田土壤有机质时空变化及其驱动因素
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李冬初,黄晶,马常宝,薛彦东,高菊生,王伯仁,张杨珠,柳开楼,韩天富,张会民
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Spatio-Temporal Variations of Soil Organic Matter in Paddy Soil and Its Driving Factors in China
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LI DongChu,HUANG Jing,MA ChangBao,XUE YanDong,GAO JuSheng,WANG BoRen,ZHANG YangZhu,LIU KaiLou,HAN TianFu,ZHANG HuiMin
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表1 不同区域稻田耕层土壤有机质平均含量
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Table 1 The mean SOM content of paddy soil in plough layer in different regions
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稻作区域 Rice cultivation region | 省份 Province | 水稻种植面积 Rice cultivation area (×104 hm2) | 有机质含量 SOM content (g·kg-1) | 样本数 No. of samples | 平均含量 SOM | 最低含量 Min. | 最高含量 Max | 中位数 Median | 东北NE | 黑龙江Heilongjiang | 394.9 | 34.4 | 30.0 | 39.5 | 34.1 | 4 | | 吉林Jilin | 82.1 | 34.1 | 26.7 | 51.6 | 33.1 | 6 | | 辽宁Liaoning | 49.3 | 26.3 | 11.9 | 30.2 | 26.4 | 8 | | 平均 Mean | 526.2 | 33.6 | 11.9 | 51.6 | 30.1 | 18 | 长江中游MYR | 湖北Hubei | 236.8 | 29.1 | 17.7 | 41.1 | 27.9 | 19 | | 湖南Hunan | 423.9 | 38.7 | 16.9 | 65.0 | 36.7 | 41 | | 江西Jiangxi | 350.5 | 34.7 | 16.5 | 50.9 | 34.7 | 51 | | 平均 Mean | 1011.2 | 35.1 | 16.5 | 65.0 | 33.7 | 111 | 长江下游LYR | 安徽Anhui | 260.5 | 24.5 | 13.1 | 38.1 | 26.3 | 29 | | 江苏Jiangsu | 223.8 | 26.0 | 16.6 | 39.7 | 25.0 | 37 | | 上海Shanghai | 10.4 | 22.9 | 20.0 | 25.8 | 22.9 | 2 | | 浙江Zhejiang | 78.4 | 33.4 | 13.7 | 63.8 | 37.3 | 14 | | 平均Mean | 573.1 | 26.3 | 13.1 | 63.8 | 26.3 | 82 | 西南SW | 贵州Guizhou | 67.8 | 37.3 | 35.4 | 40.8 | 37.0 | 3 | | 四川Sichuan | 187.5 | 26.1 | 17.3 | 44.2 | 25.1 | 29 | | 云南Yunnan | 87.1 | 38.0 | 26.2 | 50.2 | 33.0 | 7 | | 重庆Chongqing | 65.9 | 29.0 | 23.8 | 36.0 | 29.8 | 8 | | 平均Mean | 408.2 | 31.0 | 17.3 | 50.2 | 29.5 | 47 | 华南SC | 福建Fujian | 76.9 | 30.1 | 20.9 | 40.0 | 29.3 | 14 | | 广东Guangdong | 180.5 | 35.3 | 15.2 | 51.3 | 32.3 | 35 | | 广西Guangxi | 152.7 | 36.4 | 13.4 | 56.3 | 33.9 | 13 | | 海南Hainan | 18.0 | 22.9 | 11.3 | 33.4 | 23.5 | 18 | | 平均Mean | 428.2 | 34.2 | 11.3 | 56.3 | 29.0 | 80 | 全国National | | 2946.9 | 32.4 | 11.3 | 65.0 | 29.4 | 338 |
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