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Position: Home > Articles > Comparative Analysis of Soil Erosion Resistance under Different Land Use Patterns in Purple Soil Hilly Region Protection Forest Science and Technology 2012 (3) 1-5

紫色土丘陵区不同耕作模式土壤抗冲性对比分析

作  者:
魏阜森;刘益军;代数;唐寅
单  位:
西南大学资源环境学院
关键词:
土壤抗冲性;耕作模式;径流含沙量;土层;紫色土
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。
译  名:
Comparative Analysis of Soil Erosion Resistance under Different Land Use Patterns in Purple Soil Hilly Region
作  者:
WEI Fu-sen1,2,LIU Yi-jun1,DAI Shu1,TANG Yin1 (1.College of Resource & Environment,Southwest University,Chongqing 400715,China;2.Huzhou South Taihu Lake Survey & Design Co.Ltd.of Water Conservancy & Hydropower)
关键词:
soil erosion resistance;tillage patterns;sediment yield of runoff;soil layer;purple soil
摘  要:
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 layer<15-30 cm layer,and the latter are 2-3 times as large as the former.

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