| 江淮丘陵区土壤可蚀性K值研究──以肥东县为例 |
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| 引用本文： | 管飞,叶明亮,马友华.江淮丘陵区土壤可蚀性K值研究──以肥东县为例[J].中国农学通报,2020,36(1):105-111. |
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| 作者姓名： | 管飞 叶明亮 马友华 |
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| 作者单位： | 安徽农业大学资源与环境学院,合肥 230036 |
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| 基金项目： | 安徽省农业生态环保与质量安全产业技术体系专项经费(201701425)。 |
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| 摘 要： | 水土流失是当前较为严重的环境问题之一。江淮丘陵区是水土流失较为严重的区域。本研究以肥东县为例研究土壤侵蚀问题,依据第二次土壤普查资料,采用分段3次Hermite插值法对土壤质地粒径进行转换及几何平均粒径修正模型进行计算,运用数理统计方法及SPSS相关性分析和ArcGIS软件地统计分析对研究区土壤质地类因子和可蚀性K值特征进行了研究。结果表明：（1）水稻土、黄褐土土壤质地组分含量变异系数差异较显著,黄棕壤变异系数差异较低;（2）水稻土、黄褐土质地类各因子主要通过CLA和Dg对土壤可蚀性进行作用,且均为负向作用;（3）肥东县土壤可蚀性K均值为0.02797,水稻土0.0279,黄褐土0.0281,黄棕壤0.0263;（4）不同土壤质地K值平均值中粉壤土最大,砂壤土最小,且土壤质地K值均呈弱变异性;（5）肥东县土壤可蚀性以中等可蚀性、高可蚀性为主。肥东县土壤可蚀性K值空间分布呈现由北向南先降低、后增高、再降低的趋势,由东向西逐渐增高的趋势,存在极大的土壤侵蚀风险。
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| 关 键 词： | 土壤可蚀性 土壤质地 K值 江淮丘陵区 GIS |
| 收稿时间： | 2018/8/9 0:00:00 |
| 修稿时间： | 2018/10/23 0:00:00 |
The K Value of Soil Erosion in the Jianghuai Hilly Area: A Case of Feidong County |
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| Guan Fei,Ye Mingliang,Ma Youhua.The K Value of Soil Erosion in the Jianghuai Hilly Area: A Case of Feidong County[J].Chinese Agricultural Science Bulletin,2020,36(1):105-111. |
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| Authors: | Guan Fei Ye Mingliang Ma Youhua |
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| Institution: | College of Resources and Environment, Anhui Agricultural University, Hefei 230036 |
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| Abstract: | Soil erosion is one of the more serious environmental problems. The Jianghuai hilly area is a region with serious soil erosion. Soil erosion is the basis for monitoring and planning soil and water conservation. In this study, Feidong County was taken as an example to study the soil erosion problem. According to the second soil census data, the soil texture particle size transformation and the geometric mean particle size correction model calculation formula were used by the three-stage Hermite interpolation method, and the mathematical statistics method was used. And SPSS correlation analysis and ArcGIS software statistical analysis of soil texture factors and erodibility K values in the study area. The results showed that: (1) The variation coefficient of soil texture components in paddy soil and yellow cinnamon soil was significantly different, and the coefficient of variation of yellow brown soil was lower; (2) the factors of paddy soil and yellow clay soil mainly passed CLA and Dg. It has a negative effect on soil erodibility; (3) Soil Erodibility K average value of 0.02797 in Feidong County, 0.0279 paddy soil, 0.0281 yellow cinnamon soil, and 0.0263 yellow brown soil; (4) Different soil textures Among the K values, the silt loam was the largest, the sandy loam soil was the smallest, and the soil texture K value was weakly variability. (5) The soil erodibility of Feidong County was mainly moderately corrosive and highly corrosive. The spatial distribution of soil erodibility K value in Feidong County showed a trend of decreasing from north to south, then increasing and then decreasing, and gradually increasing from east to west, and there was a great risk of soil erosion. |
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| Keywords: | soil erodibility soil species K factor jianghuai hilly area GIS |
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