降水和植被变化对径流影响的尺度效应&amp;#x02014;&amp;#x02014;以陕北黄土丘陵沟壑区为例

赵文武,; 房学宁,; 丁婧祎,; 王军,

doi:10.18306/dlkxjz.2015.08.011

Cited by 2 publications

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“…第 7 期李全峰等：黑土耕作区侵蚀沟治理紧迫度空间分布特征确性依赖于遥感影像分辨率大小。对比不同分辨率解译效果发现，资源三号与高分一号遥感影像更适用于提取区域侵蚀沟形态 [13] 。基于提取的侵蚀沟形态数据，学者们通过构建沟道密度/裂度等指标评估区域沟道侵蚀强烈程度 [16][17][18][19] 。在实际治理过程中，县级主管部门负责监测/防治工作，而乡镇主管人员负责察看/上报工作 [7,[20][21]…”

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Spatial pattern of gully erosion control urgency in black soil farming area

Li¹,

Li²,

Yu³

et al. 2021

Progress in Geography

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Spatial pattern of gully erosion control urgency in black soil farming area

Li¹,

Li²,

Yu³

et al. 2021

Progress in Geography

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The influence of rainfall and land use patterns on soil erosion in multi-scale watersheds: A case study in the hilly and gully area on the Loess Plateau, China

et al. 2018

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Soil erosion has become a major global environmental problem and is particularly acute on the Loess Plateau (LP), China. It is therefore highly important to control this process in order to improve ecosystems, protect ecological security, and maintain the harmonious relationship between humans and nature. We compared the effects of rainfall and land use (LU) patterns on soil erosion in different LP watersheds in this study in order to augment and improve soil erosion models. As most research on this theme has so far been focused on individual study areas, limited analyses of rainfall and LU patterns on soil erosion within different-scale watersheds has so far been performed, a discrepancy which might influence the simulation accuracies of soil erosion models. We therefore developed rainfall and LU pattern indices in this study using the soil erosion evaluation index as a reference and applied them to predict the extent of this process in different-scale watersheds, an approach which is likely to play a crucial role in enabling the comprehensive management of this phenomenon as well as the optimized design of LU patterns. The areas considered in this study included the Qingjian, Fenchuan, Yanhe, and Dali river watersheds. Results showed that the rainfall erosivity factor (R) tended to increase in these areas from 2006 to 2012, while the vegetation cover and management factor (C) tended to decrease. Results showed that as watershed area increased, the effect of rainfall pattern on soil erosion gradually decreased while patterns in LU trended in the opposite direction, as the relative proportion of woodland decreased and the different forms of steep slope vegetation cover became more homogenous. As watershed area increased, loose soil and craggy terrain properties led to additional gravitational erosion and enhanced the effects of both soil and topography.

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降水和植被变化对径流影响的尺度效应——以陕北黄土丘陵沟壑区为例

Cited by 2 publications

References 0 publications

Spatial pattern of gully erosion control urgency in black soil farming area

Spatial pattern of gully erosion control urgency in black soil farming area

The influence of rainfall and land use patterns on soil erosion in multi-scale watersheds: A case study in the hilly and gully area on the Loess Plateau, China

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