1. 兰州大学 资源环境学院,甘肃,兰州,730000
2. 西安通信学院,陕西,西安,710106
纸质出版:2016
移动端阅览
王凯, 马金辉, 夏燕秋, 等. 基于GIS的泾河北洛河上游重点治理区土壤侵蚀潜在危险度评价[J]. 水土保持通报, 2016,36(2):343-348.
WANG Kai, MA Jinhui, XIA Yanqiu, et al. Evaluation of Potential Soil Erosion Risk in Key Harnessing Areas of Jinghe and Beiluo River Upstream Based on GIS[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 343-348.
王凯, 马金辉, 夏燕秋, 等. 基于GIS的泾河北洛河上游重点治理区土壤侵蚀潜在危险度评价[J]. 水土保持通报, 2016,36(2):343-348. DOI: 10.13961/j.cnki.stbctb.2016.02.063.
WANG Kai, MA Jinhui, XIA Yanqiu, et al. Evaluation of Potential Soil Erosion Risk in Key Harnessing Areas of Jinghe and Beiluo River Upstream Based on GIS[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 343-348. DOI: 10.13961/j.cnki.stbctb.2016.02.063.
[目的
]
对泾河北洛河上游重点治理区土壤侵蚀潜在危险度进行评价
为该区土壤侵蚀研究提供参考。[方法
]
在GIS支持下
利用高分辨率遥感影像土地利用解译结果
采用中国土壤流失方程(CSLE)与抗蚀年限法相结合
同时利用土壤侵蚀潜在危险度指数(SEPDI)对不同坡度地区或地类土壤侵蚀潜在危险度的大小进行评价。[结果
]
利用CSLE定量计算得到陕西省吴起县的年均侵蚀模数为1 317.5 t/(km
2
·a)
属轻度侵蚀
其土壤侵蚀潜在危险度也较小
以无险型和轻险型为主
平均SPEDI值为1.25。[结论
]
研究区内大于25°的坡度范围将是今后重点治理的区域;另外研究区内人为水土流失比较严重
建议适当减少工矿用地以及建筑用地的开挖量。
[Objective] The potential soil erosion risk in the key harnessing areas of Jinghe and Beiluo River upstream was assessed to provide references for soil erosion researches. [Methods] Based on the interpretation results of high-resolution remote sensing images and the assistant of GIS
the Chinese soil loss equation and the method of soil anti-erosion years were used to assess the potential risk of lands with different slope gradient and land use type by SPEDI index. [Results] The average soil erosion modules of Wuqi County was 1 317.5 t/(km2·a)
which belonged to slight erosion level. The risk was assessed at slight or no danger level
and the average SPEDI is 1.25. [Conclusion] In some districts
soil erosion might be serious especially when the slope is larger than 25 degrees
and these districts need to be intensively harnessed in the future. In addition
the excavation work of mine and construction of land were proposed to be diminished because most serious soil erosion was caused by human.
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