| 岩溶山区土壤耕作侵蚀研究——以重庆市中梁山为例 |
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| 引用本文： | 傅瓦利,贾红杰,张文晖,张治伟,赵俊丽.岩溶山区土壤耕作侵蚀研究——以重庆市中梁山为例[J].中国岩溶,2006,25(2):152-156. |
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| 作者姓名： | 傅瓦利 贾红杰 张文晖 张治伟 赵俊丽 |
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| 作者单位： | 西南大学地理科学学院 |
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| 基金项目： | 国家自然科学基金;西南师范大学校科研和教改项目 |
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| 摘 要： | 在岩溶山区采用示踪法证实了锄耕会引起耕作侵蚀。实验结果表明: 岩溶山区单次耕作土壤的最大位移距离为1m 左右;土壤平均位移距离0. 2053～0. 2982m,土壤位移量为42. 364～ 61. 534kg /m;耕作侵蚀速率为141. 21～ 205. 11t /hm2 ,平均侵蚀速率为162. 85t /hm2 ;它们都受坡度的影响,而且在相同坡体长度下,都随地块坡度的增加而递增。地块面积较小、坡体较短,地块破碎是岩溶山区土壤耕作侵蚀严重的重要原因。本文还结合岩溶山区特殊的自然环境条件,提出了加强岩溶山区土壤耕作侵蚀研究的必要性和重要意义。
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| 关 键 词： | 岩溶山区 土壤侵蚀 耕作侵蚀 耕作位移 |
| 文章编号： | 1001-4810（2006）02-0152-05 |
| 收稿时间： | 2005-12-27 |
| 修稿时间： | 2005年12月27 |
STUDY ON SOIL TILLAGE EROSION IN KARST MOUNTAIN AREA--A Case Study in Zhongliangshan, Chongqing |
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| FU Wa-li,JIA Hong-jie,ZHANG Wen-hui,ZHANG Zhi-wei and ZHAO Jun-li.STUDY ON SOIL TILLAGE EROSION IN KARST MOUNTAIN AREA--A Case Study in Zhongliangshan, Chongqing[J].Carsologica Sinica,2006,25(2):152-156. |
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| Authors: | FU Wa-li JIA Hong-jie ZHANG Wen-hui ZHANG Zhi-wei and ZHAO Jun-li |
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| Institution: | School of Resources and Environmental Science, Southwest University |
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| Abstract: | The direct evidences of tillage erosion by hoeing plough in karst area are obtained with tracer technique.The test proves that tillage translocation rates range from 42.364 to 61.534 kg/m,the mean displacement distances range from 0.2053 to 0.2982m,and tillage erosion rates reach 141.21 to 205.11t/hm~2,mean tillage erosion rate is 162.85 t/hm~2.They are all affected by slope,and they all increase with the farmland slope even under same slope length.The major reasons for the seriously tillage erosion are that the area of single farmland being too small,the slope body comparatively short and the patches of farmland too dispersed.By combining the special natural conditions in karst mountain area,the necessity and importance in strengthen the research on soil tillage erosion is put forward. |
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| Keywords: | Karst mountain area Soil erosion Tillage erosion Tillage translocation |
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