| 采煤塌陷裂缝对降雨后坡面土壤水分的影响 |
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| 引用本文： | 马迎宾,黄雅茹,王淮亮,党晓宏,汪 季,高 永.采煤塌陷裂缝对降雨后坡面土壤水分的影响[J].土壤学报,2014,51(3):497-504. |
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| 作者姓名： | 马迎宾 黄雅茹 王淮亮 党晓宏 汪 季 高 永 |
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| 作者单位： | 内蒙古农业大学 生态环境学院；中国林业科学研究院 沙漠林业实验中心,中国林业科学研究院 沙漠林业实验中心,河北省水利技术试验推广中心,内蒙古农业大学 生态环境学院,内蒙古农业大学 生态环境学院,内蒙古农业大学 生态环境学院 |
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| 基金项目： | 国家林业局林业公益行业科研专项（201104002-5）资助 |
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| 摘 要： | 为探究采煤塌陷裂缝对坡面储蓄降水的影响,本文对降雨后不同坡向上裂缝两侧的不同土层水分动态变化特征进行了研究。结果表明:降雨主要补充坡面地表0~20 cm土层土壤水分,且在雨后0~20 cm土层土壤水分散失也较为严重;雨后阴坡土壤含水率最高,0~10cm、10~20cm和20~40 cm土层土壤水分差异显著(p0.05)。降雨结束8 d后,裂缝附近的土壤水分变化幅度较大,尤以坡面裂缝上部边缘处最为明显,裂缝处与远离裂缝的土壤水分之间差异显著(p0.05);阳坡土壤水分损失最高,阳坡裂缝周边土壤水分平均损失量高达3.31%。可见,裂缝的出现会在一定程度上打破坡面储蓄降水的格局,加剧坡面局部土壤水分散失,这一点在植被恢复与建设过程中不容忽视。
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| 关 键 词： | 半干旱区 矿区 采煤塌陷裂缝 坡面 土壤含水量 |
| 收稿时间： | 3/8/2013 12:00:00 AM |
| 修稿时间： | 2014/1/13 0:00:00 |
Effects of collapse fissures caused by coal mining on soil moisture in slope lands after rain |
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| Ma Yingbin,Huang Yaru,Wang Huailiang,Dang Xiaohong,Wang Ji and Gao Yong.Effects of collapse fissures caused by coal mining on soil moisture in slope lands after rain[J].Acta Pedologica Sinica,2014,51(3):497-504. |
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| Authors: | Ma Yingbin Huang Yaru Wang Huailiang Dang Xiaohong Wang Ji and Gao Yong |
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| Abstract: | To explore effects of collapse fissures caused by coal mining on soil water holding capacity of slope lands after rainfalls, post-rainfall dynamics of soil water in different soil layers on either side of a collaspse fissure in slope lands different in aspect was studied. Results show that on slope lands rains bring some water mainly into the 0~20 cm soil layer, but the water in the soil layer is quickly lost after the rain; after rainfall, the soil on the shady slope is higher in moisture content and soil moisture contents in the soil layers of 0~10, 10~20 and 20~40 cm differ sharply(p<0.05). Eight days after rainfall, soil moisture contents around the fissures vary greatly, especially along the edge of the upper part of a fissure, and the difference in soil moisture content between the soil of the fissure and that far from the fissure is significant (p<0.05). On sunny slopes soil moisture loss after rainfall is high and the mean soil moisture loss around the fissures may reach as high as 3.31%. It is quite obvious that the appearance of fissures to a certain extent breaks the slope rain water holding pattern and aggravates soil moisture loss in some parts of a slope, which should not be neglected in the process of revegetation and construction. |
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| Keywords: | Semi-arid region Mining area Collapse fissures caused by coal mining Slope Soil moisture content |
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