冻融循环作用下植被混凝土团聚结构变化对养分固持能力的影响
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刘大翔, 刘德玉, 童标, 杨悦舒, 丁瑜, 许文年
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Effect of aggregate structure change in vegetation concrete on nutrient retention ability under freeze-thaw cycles
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Daxiang LIU, Deyu LIU, Biao TONG, Yueshu YANG, Yu DING, Wennian XU
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表1 不同初始含水率与冻融循环次数下植被混凝土水稳性团聚体的粒径分布
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Table 1 Water-stable aggregate particle size distribution in vegetation concrete under different initial water contents and freeze-thaw cycles
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| 初始含水率/% | 冻融循环次数 | 不同粒径的质量分数/% |
|---|
| ≥1~2 mm | ≥0.5~1 mm | ≥0.25~0.5 mm | ≥0.05~0.25 mm | ≥0.02~0.05 mm | ≥0.002~0.02 mm | <0.002 mm |
|---|
| 18 | 0 | 0.83±0.12a | 9.83±0.31a | 11.70±0.28a | 55.36±2.21a | 13.69±0.36a | 6.03±0.35a | 2.56±0.13a | | 1 | 0.65±0.03b | 8.24±0.23b | 10.87±0.29b | 56.11±1.23a | 14.21±0.25ab | 7.29±0.28b | 2.63±0.16a | | 2 | 0.53±0.05bc | 7.96±0.26b | 9.76±0.15c | 56.68±3.15a | 14.20±0.28ba | 8.26±0.27c | 2.61±0.21a | | 4 | 0.51±0.08bc | 7.54±0.14c | 8.79±0.34d | 57.68±2.36a | 14.35±0.14bc | 8.44±0.23cd | 2.69±0.09a | | 8 | 0.50±0.03bc | 6.42±0.08d | 8.43±0.19de | 58.72±4.20a | 14.34±0.26bc | 8.88±0.19de | 2.71±0.11a | | 16 | 0.48±0.14c | 5.87±0.14e | 8.13±0.13ef | 58.80±3.46a | 14.88±0.31c | 9.05±0.24e | 2.79±0.18a | | 32 | 0.47±0.04c | 5.35±0.15f | 7.94±0.16f | 59.05±2.65a | 14.76±0.23bc | 9.61±0.31f | 2.82±0.23a | | 64 | 0.47±0.05c | 5.12±0.16f | 7.85±0.12f | 59.20±2.78a | 14.66±0.41bc | 9.87±0.26f | 2.83±0.14a | 对数拟合 y=alnx+b | a | -0.0180 | -0.2050 | -0.1820 | 0.1750 | 0.0486 | 0.1692 | 0.0113 | | b | 0.5512 | 7.0013 | 7.0013 | 57.7340 | 14.3960 | 8.4618 | 2.7072 | | R2 | 0.8980 | 0.6813 | 0.6815 | 0.6044 | 0.7087 | 0.7793 | 0.5342 | | 24 | 0 | 6.41±0.18a | 9.25±0.26a | 11.65±0.26a | 51.41±2.63a | 14.16±0.16a | 6.41±0.26a | 2.71±0.19a | | 1 | 4.57±0.12b | 8.47±0.12b | 11.02±0.14b | 51.60±3.56ab | 14.49±0.32ab | 7.08±0.19b | 2.77±0.20ab | | 2 | 4.40±0.05b | 7.15±0.25c | 9.60±0.25c | 53.43±3.43abc | 14.03±0.18a | 8.56±0.24c | 2.83±0.12ab | | 4 | 3.17±0.03c | 6.48±0.14d | 8.76±0.13d | 54.44±2.15abc | 15.17±0.21dc | 9.01±0.34cd | 2.96±0.08abc | | 8 | 2.58±0.14d | 5.83±0.13e | 8.33±0.16e | 55.54±3.01abc | 15.48±0.24d | 9.17±0.25de | 3.07±0.13bc | | 16 | 2.27±0.02e | 5.03±0.39g | 7.46±0.13f | 57.71±1.65c | 14.95±0.22bc | 9.39±0.16def | 3.19±0.17c | | 32 | 2.17±0.09e | 5.59±0.10ef | 7.23±0.16f | 56.96±2.21bc | 15.21±0.31dc | 9.58±0.35ef | 3.26±0.22c | | 64 | 2.09±0.08e | 5.19±0.14fg | 6.57±0.18g | 57.99±1.26c | 15.09±0.19dc | 9.83±0.21f | 3.24±0.16c | 对数拟合 y=alnx+b | a | -0.2060 | -0.1910 | -0.2140 | 0.2760 | 0.0488 | 0.1576 | 0.0233 | | b | 3.4172 | 6.5865 | 8.7858 | 54.9390 | 14.8320 | 8.6595 | 3.0083 | | R2 | 0.7770 | 0.6516 | 0.5985 | 0.4859 | 0.3663 | 0.7040 | 0.4954 |
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