Characteristics of water and soil loss occurrence under contour hedges condition in red soil slope fields
Monthly distribution characteristics of rain capacity and rainfall erosion force, water and soil loss occurrence characteristics, soil infiltration characteristics and the connection between soil infiltration and runoff and soil loss were studied under contour hedge condition of experiment plots in...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2003-07-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/1008-9209.2003.04.0368 |
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| Summary: | Monthly distribution characteristics of rain capacity and rainfall erosion force, water and soil loss occurrence characteristics, soil infiltration characteristics and the connection between soil infiltration and runoff and soil loss were studied under contour hedge condition of experiment plots in red soil slope fields. The results showed that rain capacity in August was 22.26% of the whole year rainfall, and significant positive correlation existed between rain capacity and rainfall erosion force. On average, with the Hemerocallis citrirna Baroni and Paspalum. notatum Flugge hedgerows the annual runoff and soil loss decreased 10.14-11.56 times and 135.34-165.84 times, respectively compared with the spring soybean monocropping pattern. Significant positive correlation was observed between the erosion rain capacity and runoff and soil loss under the hedgerows and soybean monocropping pattern, as well as between runoff and soil loss. Regression models were established to simulate the relationships between runoff, soil loss and the erosion rain capacity. Soil physical characteristics and soil infiltration were significantly improved by hedge roots and higher water infiltration capacity and infiltration rate were maintained in different hedgerows. Regression models were also established to simulate the relationships between runoff, soil loss and infiltration capacity. |
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| ISSN: | 1008-9209 2097-5155 |