粤北石漠化地区水文过程试验研究
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陆冠尧, 李森, 魏兴琥, 梁钊雄, 熊彦, 黄金国
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Experimental Study of Hydrological Processes in Rock Desertification Area of Northern Guangdong
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Guan-yao LU, Sen LI, Xing-hu WEI, Zhao-xiong LIANG, Yan XIONG, Jin-guo HUANG
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表3 不同石漠化阶段土壤持水量和土壤基本性质 |
Table 3 Soil moisture capacity and characteristics in different stages of rocky desertification |
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石漠化 阶段 | 土层 深度 (cm) | 饱和持水量 (g/cm3) | 田间持水量 (g/cm3) | 有机质 (g/kg) | 容重 (g/cm3) | 土壤颗粒组成(g/kg) | >0.5 mm | 0.50~0.25 mm | 0.25~0.10 mm | 0.10~0.05 mm | 0.05~0.01 mm | 0.01~0.005 mm | <0.005 mm | 轻度 | 0~20 | 0.161 | 0.089 | 26.49 | 1.13 | 2.25 | 4.37 | 15.53 | 21.47 | 30.19 | 7.02 | 18.84 | 20~40 | 0.103 | 0.052 | 15.66 | 1.45 | 2.21 | 4.12 | 15.48 | 22.34 | 31.64 | 7.86 | 19.22 | >40 | 0.095 | 0.048 | 15.46 | 1.87 | 2.08 | 3.87 | 14.72 | 21.83 | 32.52 | 7.89 | 18.93 | 中度 | 0~20 | 0.190 | 0.105 | 29.82 | 1.15 | 3.19 | 6.07 | 16.28 | 20.08 | 28.77 | 6.77 | 18.70 | 20~40 | 0.120 | 0.069 | 18.27 | 1.44 | 3.01 | 6.02 | 15.23 | 19.85 | 29.66 | 7.12 | 18.63 | >40 | 0.115 | 0.067 | 14.39 | 1.45 | 2.96 | 5.39 | 15.02 | 21.37 | 30.97 | 7.31 | 18.16 | 重度 | 0~20 | 0.231 | 0.115 | 35.00 | 0.96 | 4.22 | 6.24 | 17.59 | 21.55 | 23.94 | 6.04 | 15.55 | 20~40 | 0.154 | 0.076 | 21.41 | 1.08 | 4.17 | 5.88 | 16.45 | 20.21 | 26.21 | 6.31 | 16.73 | 极重度 | 0~20 | 0.150 | 0.100 | 12.76 | 1.52 | 23.43 | 17.26 | 19.94 | 11.81 | 10.98 | 1.31 | 1.04 |
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