近40年黑龙江省两大平原土壤有机质时空变化规律
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杨贺平, 赵小静, 孙江军
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Spatiotemporal changes of soil organic matter in the Songnen and Sanjiang plains of Heilongjiang Province over 40 years
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YANG He-Ping, ZHAO Xiao-Jing, SUN Jiang-Jun
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表6 1980~2020年两大平原主要土壤类型表层土壤(0~20 cm)SOM流失特征统计
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Table 6 Statistics on the characteristics of SOM content loss in surface soil (0~20 cm) of the main soil types in the two great plains from 1980 to 2020
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| 土壤类型 | 面积/km2 | 1980年 | 2020年 | 流失量/
10-3 | 流失率/% | 面积流失率 | 流失贡献率/% | | 样本数 | 平均值/
10-3 | 样本数 | 平均值/
10-3 | | 草甸土 | 85480.3 | 12308 | 51.7 | 21660 | 37.6 | -14.1 | -27.27 | -2331047.8 | 44.14 | | 暗棕壤 | 47416.9 | 3902 | 63.6 | 12311 | 50.8 | -12.8 | -20.13 | -954502.2 | 18.08 | | 黑土 | 41608.0 | 14869 | 43.2 | 10451 | 40.8 | -2.4 | -5.56 | -231340.5 | 4.38 | | 白浆土 | 23817.3 | 3555 | 50.3 | 6099 | 43.0 | -7.3 | -14.51 | -345589.0 | 6.54 | | 沼泽土 | 22048.2 | 732 | 105.2 | 5554 | 58.2 | -47.0 | -44.68 | -985113.6 | 18.65 | | 黑钙土 | 21397.0 | 6916 | 33.2 | 5363 | 28.4 | -4.8 | -14.46 | -309400.6 | 5.86 | | 风沙土 | 5503.6 | 892 | 15.0 | 1369 | 14.5 | -0.5 | -3.33 | -18327.0 | 0.35 | | 水稻土 | 3570.3 | 1055 | 52.5 | 907 | 37.0 | -15.5 | -29.52 | -105395.3 | 2.00 |
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