黑土旱地改稻田土壤水稳性团聚体有机碳和全氮的变化特征
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马原,迟美静,张玉玲,范庆峰,虞娜,邹洪涛
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Change Characteristics of Organic Carbon and Total Nitrogen in Water-Stable Aggregate After Conversion from Upland to Paddy Field in Black Soil
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Yuan MA,MeiJing CHI,YuLing ZHANG,QingFeng FAN,Na YU,HongTao ZOU
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表1 供试土壤的地理信息及理化性质
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Table 1 The geographical information and physical–chemical properties of the soil samples
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旱地改稻田年限
Years of the conversion from upland to paddy field (a) | 地理坐标
Geographic
coordinate | 土层
Soil depth
(cm) | 有机碳
Soil organic carbon (g·kg-1) | δ13C
(‰) | 全氮
Total nitrogen (g·kg-1) | δ15N
(‰) | C/N | pH | | 0 | 127.533° E, 47.005° N | 0—20 | 28.60 | -24.72 | 2.34 | 9.25 | 12.25 | 5.99 | | | 20—40 | 22.25 | -24.51 | 1.71 | 10.43 | 12.97 | 5.97 | | | 40—60 | 15.34 | -24.35 | 1.26 | 10.82 | 12.12 | 5.82 | | 3 | 127.518° E, 47.001° N | 0—20 | 16.23 | -24.04 | 1.39 | 6.63 | 11.64 | 6.07 | | | 20—40 | 14.78 | -23.67 | 1.24 | 7.84 | 11.98 | 5.95 | | | 40—60 | 13.25 | -23.52 | 1.12 | 8.07 | 11.69 | 5.99 | | 5 | 127.520° E, 47.002° N | 0—20 | 24.09 | -24.78 | 1.99 | 6.71 | 12.13 | 5.79 | | | 20—40 | 24.50 | -24.58 | 1.94 | 7.31 | 12.62 | 6.23 | | | 40—60 | 21.63 | -23.52 | 1.78 | 7.28 | 12.15 | 6.10 | | 10 | 127.528° E, 46.990° N | 0—20 | 23.93 | -24.99 | 1.83 | 6.05 | 13.28 | 5.88 | | | 20—40 | 22.88 | -24.57 | 1.76 | 7.50 | 12.95 | 5.54 | | | 40—60 | 22.02 | -24.41 | 1.68 | 6.52 | 11.33 | 5.49 | | 17 | 127.537° E, 46.997° N | 0—20 | 29.39 | -24.91 | 2.35 | 6.93 | 10.95 | 6.11 | | | 20—40 | 28.90 | -24.58 | 2.24 | 6.48 | 12.86 | 5.93 | | | 40—60 | 25.01 | -24.62 | 2.00 | 6.44 | 12.53 | 5.73 | | 20 | 127.519° E, 46.999° N | 0—20 | 31.61 | -25.23 | 2.49 | 4.69 | 12.69 | 6.26 | | | 20—40 | 26.08 | -24.53 | 2.04 | 4.59 | 12.76 | 6.27 | | | 40—60 | 25.71 | -24.73 | 1.99 | 4.98 | 12.94 | 6.07 | | 25 | 127.538° E, 46.995° N | 0—20 | 36.36 | -25.25 | 2.74 | 7.06 | 13.46 | 6.03 | | | 20—40 | 28.20 | -25.10 | 2.12 | 7.08 | 13.28 | 6.28 | | | 40—60 | 19.56 | -24.66 | 2.08 | 7.80 | 9.72 | 6.34 |
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