| 黄土高原土壤分离速率的季节变化研究 |
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| 引用本文： | 唐科明,汪邦稳,曹颖.黄土高原土壤分离速率的季节变化研究[J].水土保持学报,2010,24(2). |
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| 作者姓名： | 唐科明 汪邦稳 曹颖 |
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| 作者单位： | 1. 北京师范大学,地理学与遥感科学学院,北京,100875
2. 北京师范大学,地理学与遥感科学学院,北京,100875;江西省水土保持科学研究所,南昌,330029 |
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| 基金项目： | 国家重点基础研究发展规划项目(2007CB407204) |
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| 摘 要： | 为定量研究水动力对土壤分离速率的影响,采用变坡实验水槽方法,在特定水动力条件下,分析黄土高原七种典型土地利用类型土壤分离速率的季节变化。结果表明:(1)不同土地利用下土壤分离速率差异显著,测定期内平均值为谷子土豆玉米大豆荒坡草地林地;(2)除林地外,各土地利用类型土壤分离速率具有明显的季节变化,变化幅度为玉米谷子大豆荒坡土豆草地林地;(3)农地土壤分离速率的季节变化主要由农事活动导致,播种、除草、收获等农事活动可使土壤分离速率提高2～6倍;(4)土壤表层粘结力对各类土地利用土壤分离速率的季节变化具有重要影响。研究结果为进一步分析土壤侵蚀过程和建立侵蚀模型提供了一定的理论基础。
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| 关 键 词： | 土壤侵蚀 土壤分离 土地利用 季节变化 |
Research of Temporal Variation in Soil Detachment Rate in the Loess Plateau |
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| TANG Ke-ming,WANG Bang-wen,CAO Ying.Research of Temporal Variation in Soil Detachment Rate in the Loess Plateau[J].Journal of Soil and Water Conservation,2010,24(2). |
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| Authors: | TANG Ke-ming WANG Bang-wen CAO Ying |
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| Institution: | TANG Ke-ming1,WANG Bang-wen1,2,CAO Ying1 (1.School of Geography,Beijing Normal University,Beijing,100875,2.Jiangxi Provincial Research Institute for Soil , Water Conversation,Nanchang 330029) |
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| Abstract: | Temporal variation in soil detachment rate under seven typical land uses was measured in a laboratory flume.Undisturbed soil samples were collected in the field of millet,soybean,corn,potato,grassland,wasteland,and woodland.The greatest mean value of soil detachment rate was found in millet,then potato,corn,soybean,wasteland,grassland,and woodland in succession.Distinctive temporal variation was observed in all land uses except woodland through the whole experiment time.The detachment rate of corn field flu... |
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| Keywords: | soil erosion soil detachment land use temporal variation |
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