| 紫色土丘陵区不同耕作模式土壤抗冲性对比分析 |
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| 引用本文： | 魏阜森,刘益军,代数,唐寅.紫色土丘陵区不同耕作模式土壤抗冲性对比分析[J].防护林科技,2012(3):1-5. |
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| 作者姓名： | 魏阜森 刘益军 代数 唐寅 |
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| 作者单位： | 1. 西南大学资源环境学院,重庆400715／湖州南太湖水利水电勘测设计院有限公司
2. 西南大学资源环境学院,重庆,400715 |
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| 摘 要： | 基于径流小区定位观测研究,分别研究紫色土丘陵区坡耕地不同耕作模式(横垄、顺垄、混合耕作)和不同土层(0～15 cm、15～30 cm)对土壤径流冲刷过程中径流含沙量及抗冲指数的变化特征的影响,以及影响因素的内在关系。研究结果表明:(1)在整个冲刷过程中,不同土层土壤表面径流泥沙流失量呈递减趋势,最后基本趋于稳定;(2)在整个冲刷过程中,径流泥沙流失量总体表现为0～15 cm土层>15～30 cm土层,这主要与土壤剖面特性有关,而农业耕作和根系的影响占次要地位;(3)在各种耕作模式中,抗冲指数的大小均表现为0～15 cm土层<15～30 cm土层,且后者分别是前者的2～3倍。
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| 关 键 词： | 土壤抗冲性 耕作模式 径流含沙量 土层 紫色土 |
Comparative Analysis of Soil Erosion Resistance under Different Land Use Patterns in Purple Soil Hilly Region |
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| WEI Fu-sen,LIU Yi-jun,DAI Shu,TANG Yin.Comparative Analysis of Soil Erosion Resistance under Different Land Use Patterns in Purple Soil Hilly Region[J].Protection Forest Science and Technology,2012(3):1-5. |
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| Authors: | WEI Fu-sen LIU Yi-jun DAI Shu TANG Yin |
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| Affiliation: | 1.College of Resource ＆ Environment,Southwest University,Chongqing 400715,China;2.Huzhou South Taihu Lake Survey ＆ Design Co.Ltd.of Water Conservancy ＆ Hydropower) |
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| Abstract: | Based on located observation on runoff plots,effects of tillage patterns（transverse ridge,downslope ridge mixed tillage） different soil layers（0-15 cm 15-30 cm） on variation of sediment yield of runoff soil erosion resistance and the correlations among these factors were examined.Result shows that：（1）sediment yield of surface runoff decrease over the scouring process,and finally approximate a constant;（2） sediment yield runoff in 0-15 cm layer is larger than that in 15-30 cm layer,which is probably related to the different soil properties for different soil layers;（3） for all tillage patterns,the order of the soil erosion resistance is 0-15 cm layer15-30 cm layer,and the latter are 2-3 times as large as the former. |
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| Keywords: | soil erosion resistance tillage patterns sediment yield of runoff soil layer purple soil |
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