| 5°～25°坡耕地径流小区产流产沙规律 |
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| 引用本文： | 杨建霞,雷孝章,邱景,陈平安.5°～25°坡耕地径流小区产流产沙规律[J].中国水土保持科学,2008,6(Z1):30-34. |
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| 作者姓名： | 杨建霞 雷孝章 邱景 陈平安 |
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| 作者单位： | 四川大学水利水电学院,610065,四川成都 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 基于四川省遂宁水土保持试验站坡耕地水土流失的观测数据统计,通过探讨降雨产生的地表径流深及冲刷量随坡度的变化,以及耕作措施和植被对坡面侵蚀的影响,提出坡耕地在降雨时的产流产沙规律:相同前提下,产流产沙量随坡度增加而增加;横坡耕作时,产流产沙量剧减,而顺坡耕作时产流产沙增加;种植农作物时,较之坡面植草,产流量减少,但产沙量增加.同时用灰色关联系数法确定各因子对坡耕地水土流失的影响序列为:产流时,坡度>耕作措施>植被;产沙时,耕作措施>坡度>植被.
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| 关 键 词： | 径流深 冲刷量 坡度 耕作方式 植被 因子组合 曲线突变 |
Law of water loss and soil erosion in the 5°～25° sloping field |
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| Yang Jianxia,Lei Xiaozhang,Qiu Jing,Chen Ping'an.Law of water loss and soil erosion in the 5°～25° sloping field[J].Science of Soil and Water Conservation,2008,6(Z1):30-34. |
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| Authors: | Yang Jianxia Lei Xiaozhang Qiu Jing Chen Ping'an |
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| Affiliation: | Yang Jianxia,Lei Xiaozhang,Qiu Jing,Chen Ping\'an(College of Hydropower Engineering,Sichuan University,610065,Chengdu,China) |
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| Abstract: | Based on the observation and statistics of soil erosion and water loss in the sloping field,it is clear that the runoff depth and erosion would change along with the gradient,farming measures and vegetation.When the gradient increases or farming measure is changed from horizontal slope to the longitudinal one,the water loss and soil erosion would be incereased,and the different factor combinations of farming and vegetation make great impact on it too.The sequence of the factors about runoff has been got fro... |
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| Keywords: | runoff depth erosion gradient farming vegetation factor combination curve mutation |
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