| 佳芦河流域水土保持监测及土壤侵蚀评价 |
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| 引用本文： | 蔡玖锱,安乐平,秦瑞杰.佳芦河流域水土保持监测及土壤侵蚀评价[J].中国水土保持,2020(2):42-44,5. |
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| 作者姓名： | 蔡玖锱 安乐平 秦瑞杰 |
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| 作者单位： | ;1.黄河水土保持天水治理监督局(天水水土保持科学试验站) |
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| 摘 要： | 以佳芦河流域分辨率为0.38 m的航摄影像和5 m的DEM等为信息源,基于ArcGIS平台,获取了流域水土保持措施、土地利用、植被覆盖度、坡度、沟壑烈度等土壤侵蚀影响因子,依据《土壤侵蚀分类分级标准》(SL 190—2007),对各因子进行叠加分析,对水蚀、风蚀区等不同侵蚀类型的土壤侵蚀强度进行了分析评价。结果表明,截至2012年9月,佳芦河流域有水土流失面积1068.89 km 2,占流域面积的94.26%,其中轻度、中度、强烈、极强烈、剧烈侵蚀面积分别为118.69、206.35、126.29、75.08、542.48 km 2;强烈及以上侵蚀面积占到水土流失面积的69.59%,其中强烈和极强烈侵蚀多发生在风蚀区,而剧烈侵蚀主要发生在水蚀区的沟道中。
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| 关 键 词： | 土壤侵蚀 水土保持监测 遥感 地理信息系统 佳芦河流域 |
Soil and Water Conservation Monitoring and Soil Erosion Evaluation of Jialu River Basin |
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| CAI Jiuzi,AN Leping,QIN Ruijie.Soil and Water Conservation Monitoring and Soil Erosion Evaluation of Jialu River Basin[J].Soil and Water Conservation In China,2020(2):42-44,5. |
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| Authors: | CAI Jiuzi AN Leping QIN Ruijie |
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| Institution: | (Tianshui Management Supervision of Soil and Water Conservation in the Yellow River/Tianshui Experiment Station on Soil and Water Conservation,Tianshui,Gansu 741000,China) |
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| Abstract: | Taking aerial photograph with resolution of 0.38 m and DEM with resolution of 5 m of Jialu River basin as information sources,it acquired some soil erosion impact factors,such as soil and water conservation measures,land use,vegetation coverage,slope and gully intensity of the basin,based on ArcG IS. According to Soil Erosion Classification and Classification Standard( SL 190-2007),it conducted overlapping analysis with each factor,and evaluated the intensity of soil erosion of different erosion types in water erosion area and wind erosion area. The results show that soil and water loss area is 1 068.89 km2 in Jialu River basin as of September 2012,account for 94.26% of basin area,of which,the area of light,moderate,intensive,extreme intensive,strenuous erosion are 118.69,206.35,126.29,75.08,542.48 km^2 respectively;the area of intensive,extreme intensive and strenuous erosion make up 69. 59% of soil and water conservation area,of which,intensive and extreme intensive erosion usually occurs in wind erosion area,and strenuous erosion mainly occurs in gullies of the water erosion area. |
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| Keywords: | soil erosion soil and water conservation monitoring remote sensing geographic information system Jialu River Basin |
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