| 褐土和棕壤坡耕地细沟侵蚀过程及侵蚀产沙特征 |
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| 引用本文： | 吕刚,刘雅卓,陈鸿,李海茹,傅昕阳,汤家喜,苏畅.褐土和棕壤坡耕地细沟侵蚀过程及侵蚀产沙特征[J].水土保持学报,2019,33(3):64-69. |
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| 作者姓名： | 吕刚 刘雅卓 陈鸿 李海茹 傅昕阳 汤家喜 苏畅 |
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| 作者单位： | 辽宁工程技术大学环境科学与工程学院;辽宁工程技术大学水土保持生态修复研究院;西北农林科技大学水土保持研究所;辽宁省实验林场 |
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| 基金项目： | 国家自然科学基金项目（41501548） |
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| 摘 要： | 为揭示辽西低山丘陵区主要土壤类型褐土、棕壤坡耕地细沟侵蚀产流产沙变化规律,以期为该地区土壤侵蚀预测预报提供一定理论依据,利用人工模拟降雨系统在坡度为10°和15°、降雨强度为40,60,80 mm/h条件下分析褐土和棕壤2种土壤细沟侵蚀产沙过程,结果表明:褐土在坡度为10°和15°,径流量均随雨强的增加而增大,在坡度为15°雨强为80 mm/h降雨过程中出现最大值,而含沙量变化相反,大体呈现出随着雨强的增加而降低的特征,在坡度为15°时,3种降雨强度在降雨末期均集中在0.05 g/mL;棕壤在10°和15°径流量与含沙量变化无明显规律;2种土壤总体水沙关系表现出褐土总径流量大于棕壤,而总侵蚀量表现为小于棕壤;棕壤更易发生细沟侵蚀。
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| 关 键 词： | 土壤侵蚀 褐土 棕壤 坡耕地 辽西 |
| 收稿时间： | 2018/11/8 0:00:00 |
Rill Erosion Process and Sediment Yield Characteristics in Cinnamon Soil and Brown Soil Slope Farmland |
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| L&#; Gang,LIU Yazhuo,CHEN Hong,LI Hairu,FU Xinyang,TANG Jiaxi,SU Chang.Rill Erosion Process and Sediment Yield Characteristics in Cinnamon Soil and Brown Soil Slope Farmland[J].Journal of Soil and Water Conservation,2019,33(3):64-69. |
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| Authors: | L&#; Gang LIU Yazhuo CHEN Hong LI Hairu FU Xinyang TANG Jiaxi SU Chang |
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| Institution: | 1. College of Environmental Science & Engineering, Liaoning Technical University, Fuxin, Liaoning 123000;2. Institute of Soil and Water Conservation and Ecological Rehabilitation, Liaoning Technical University, Fuxin, Liaoning 123000;3. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100;4. Liaoning Experiment Forestry Centre, Qingyuan, Liaoning 113311 |
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| Abstract: | In order to reveal the variation regularity of runoff and sediment yield by rill erosion in the main soil types of cinnamon soil and brown soil sloping land in Western Liaoning, and to provide a theoretical basis for the prediction of soil erosion in this area, two soils were analyzed under the conditions with slope of 10° and 15° and rainfall intensities of 40, 60 and 80 mm/h by using artificial simulated rainfall system. The results showed that the runoff of cinnamon soil increased with the increase of rainfall intensities, and the maximum value appeared in the process of rainfall with rainfall intensity of 80 mm/h at the slope of 15°. On the contrary, the sediment content decreased with the increase of rainfall intensities. When the slope was 15°, the runoff of cinnamon soil decreased with the increase of rainfall intensities. At the end of rainfall, the three rainfall intensities were all concentrated at 0.05 g/mL; the runoff and sediment contents in brown soils at 10° and 15° had no obvious law; the relationship between the total runoff and sediment of the two soils showed that the total runoff of cinnamon soils was larger than that of brown soils, while the total erosion was smaller than the latter, indicating that brown soils were more prone to rill erosion. |
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| Keywords: | soil erosion cinnamon soil brown soil slope farmland Western Liaoning |
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