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| Effects of different crop systems on soil splash erosion from sloping land in Danjiangkou Reservoir region |
| Miao Quan'an1, Cao Cougui1, Wang Jinping1, Gao Chao2, Li Chengfang1,3 |
| 1.Key Lab of Huazhong Crop Production, Physiology and Ecology of Agriculture Ministry of China, College of Plant Science and Technology, Huazhong Agricultural University, 430070, Wuhan； 2.The Soil and Water Conservation Monitoring Center of Hubei Province, 430071, Wuhan; 3.Ecoagriculture Key Laboratory, Ministry of Agriculture, People's Republic of China，510642, Guangzhou: China |
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Abstract A field experiment was conducted on typical sloping land in Dangjiangkou Reservoir region. The effects of different crop types on soil splash erosion were studied and its relationship with crop height, crop cover, soil moisture and soil temperature at 5cm depth were discussed. The results indicated that planting crop had significant effect on soil splash erosion. There was no significant difference in soil splash erosion among different treatments during the primary stages of crop growth, but planting crop could significantly decreased soil splash erosion in the vigorous stages of crop growth. Compared to CK, the decrease amount of soil splash erosion in Ipomoea batatas treatment was the largest, followed by Cortex cinnamom and Zea mays L., and in Rhizoma curcumae Longae treatment was the least. Regression analyses indicated that soil splash erosion greatly correlated with crop cover, soil moisture and soil temperature with quadratic equation. Therefore, it can be concluded that planting crop could change the spatial pattern of sloping land, which will affect the redistribution of rainfall.
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Received: 22 June 2011
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