Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (6): 54-63.DOI: 10.11686/cyxb2020246
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Fu-hai SUN1(), Bo XIAO1,2(), Sheng-long LI1, Fang-fang WANG1
Received:
2020-05-26
Revised:
2020-07-06
Online:
2021-05-21
Published:
2021-05-21
Contact:
Bo XIAO
Fu-hai SUN, Bo XIAO, Sheng-long LI, Fang-fang WANG. Effects of biological soil crusts in different developmental stages on soil water permeability and water holding capacity in the Chinese Loess Plateau[J]. Acta Prataculturae Sinica, 2021, 30(6): 54-63.
土壤深度 Soil depth (cm) | 处理 Treatments | 结皮厚度 Biocrust thickness (mm) | 生物量 Biomass (g·cm-2) | 容重 Soil bulk density (g·cm-3) | 孔隙度 Soil porosity (%) | 砂粒含量 Sand content (%) | 粉粒含量 Silt content (%) | 黏粒含量 Clay content (%) |
---|---|---|---|---|---|---|---|---|
0~5 | CK | - | - | 1.57±0.03a | 40.87±1.08b | 95.52±0.40a | 4.48±0.40c | 0.00±0.00d |
A | 3.24±0.72c | 0.08±0.03b | 1.52±0.05b | 42.70±1.76a | 79.57±0.45b | 20.32±0.45b | 0.11±0.00c | |
B | 5.88±1.37b | 0.10±0.03b | 1.50±0.01b | 43.49±0.43a | 77.95±0.74c | 21.89±0.70a | 0.16±0.04b | |
C | 8.06±0.74a | 0.15±0.05a | 1.48±0.05b | 44.27±1.83a | 77.39±0.31c | 22.03±0.30a | 0.58±0.01a | |
5~10 | CK | - | - | 1.61±0.04a | 39.24±1.45b | 95.57±1.85a | 4.42±1.86c | 0.01±0.01c |
A | - | - | 1.54±0.02b | 42.08±0.79a | 89.78±0.58b | 10.20±0.58b | 0.02±0.01c | |
B | - | - | 1.55±0.02b | 41.54±0.81a | 86.63±2.57c | 13.26±2.69a | 0.11±0.10a | |
C | - | - | 1.61±0.01a | 39.39±0.25b | 96.14±0.98a | 3.76±0.95c | 0.10±0.03ab |
Table 1 Soil physicochemical properties of the biocrusts in different developmental stages and bare soil
土壤深度 Soil depth (cm) | 处理 Treatments | 结皮厚度 Biocrust thickness (mm) | 生物量 Biomass (g·cm-2) | 容重 Soil bulk density (g·cm-3) | 孔隙度 Soil porosity (%) | 砂粒含量 Sand content (%) | 粉粒含量 Silt content (%) | 黏粒含量 Clay content (%) |
---|---|---|---|---|---|---|---|---|
0~5 | CK | - | - | 1.57±0.03a | 40.87±1.08b | 95.52±0.40a | 4.48±0.40c | 0.00±0.00d |
A | 3.24±0.72c | 0.08±0.03b | 1.52±0.05b | 42.70±1.76a | 79.57±0.45b | 20.32±0.45b | 0.11±0.00c | |
B | 5.88±1.37b | 0.10±0.03b | 1.50±0.01b | 43.49±0.43a | 77.95±0.74c | 21.89±0.70a | 0.16±0.04b | |
C | 8.06±0.74a | 0.15±0.05a | 1.48±0.05b | 44.27±1.83a | 77.39±0.31c | 22.03±0.30a | 0.58±0.01a | |
5~10 | CK | - | - | 1.61±0.04a | 39.24±1.45b | 95.57±1.85a | 4.42±1.86c | 0.01±0.01c |
A | - | - | 1.54±0.02b | 42.08±0.79a | 89.78±0.58b | 10.20±0.58b | 0.02±0.01c | |
B | - | - | 1.55±0.02b | 41.54±0.81a | 86.63±2.57c | 13.26±2.69a | 0.11±0.10a | |
C | - | - | 1.61±0.01a | 39.39±0.25b | 96.14±0.98a | 3.76±0.95c | 0.10±0.03ab |
处理 Treatments | 初始入渗速率 Initial infiltration rate (mm·min-1) | 稳定入渗速率 Stable infiltration rate (mm·min-1) | 平均入渗速率 Average infiltration rate (mm·min-1) | 累积入渗量 Cumulative infiltration amount (mm) |
---|---|---|---|---|
CK | 12.65±2.10a | 4.02±0.40a | 4.53±0.26a | 277.96±14.37a |
A | 7.10±1.15c | 2.58±0.13c | 2.84±0.21c | 184.01±14.50c |
B | 8.56±0.70bc | 1.35±0.03d | 1.72±0.03d | 120.64±1.18d |
C | 9.87±1.23b | 3.09±0.18b | 3.87±0.09b | 239.36±5.42b |
Table 2 Infiltration parameters of the biocrusts in different developmental stages and bare soil
处理 Treatments | 初始入渗速率 Initial infiltration rate (mm·min-1) | 稳定入渗速率 Stable infiltration rate (mm·min-1) | 平均入渗速率 Average infiltration rate (mm·min-1) | 累积入渗量 Cumulative infiltration amount (mm) |
---|---|---|---|---|
CK | 12.65±2.10a | 4.02±0.40a | 4.53±0.26a | 277.96±14.37a |
A | 7.10±1.15c | 2.58±0.13c | 2.84±0.21c | 184.01±14.50c |
B | 8.56±0.70bc | 1.35±0.03d | 1.72±0.03d | 120.64±1.18d |
C | 9.87±1.23b | 3.09±0.18b | 3.87±0.09b | 239.36±5.42b |
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