近30年海南岛土壤有机质时空变异特征及成因分析
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姜赛平,张认连,张维理,徐爱国,张怀志,谢良商,冀宏杰
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Spatial and Temporal Variation of Soil Organic Matter and Cause Analysis in Hainan Island in Resent 30 Years
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JIANG SaiPing,ZHANG RenLian,ZHANG WeiLi,XU AiGuo,ZHANG HuaiZhi,XIE LiangShang,JI HongJie
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表4 海南岛不同土地利用类型SOM含量统计特征
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Table 4 Statistical characters of SOM contents of different land use types in Hainan Island
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土地利用类型 Land-use types | 1980s | 2012年 | SOM含量变化 Change of SOM contents (g·kg-1) | 样本数 Sample size | 均值±标准误差 Mean ± Stderr (g·kg-1) | 范围 Range (g·kg-1) | 样本数 Sample size | 均值±标准误差 Mean ± Stderr (g·kg-1) | 范围 Range (g·kg-1) | 水田 Paddy field | 607 | 23.48±0.57 a | 1.4—86.56 | 70 | 17.06±0.91 a | 4.43—38.12 | -6.42 | 旱地 Dry land | 245 | 14.48±0.70 c | 0.2—70.84 | 32 | 13.20±1.27 b | 3.85—27.81 | -1.28 | 园地 Garden plot | 138 | 18.60±0.93 b | 1.54—55.76 | 60 | 15.95±0.94 a | 3.16—35.3 | -2.65 | 总体 All | 990 | 20.57±0.43 | 0.20—86.56 | 162 | 15.89±0.59 | 3.16—38.12 | -4.68 |
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