Results 21 to 30 of about 273 (101)
A New Method to Estimate the Cover Management Factor on the Loess Plateau in China [PDF]
[Objective] To investigate the combined effect of crop cover and crop management practices on preventing soil loss and improving the accuracy of C-factor estimation. [Methods] Six millet plots with different treatments, i.
LI Qinglan +4 more
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Shuitu Baochi Xuebao, 2000 建立侵蚀性降雨标准，是为了区分发生和不发生侵蚀和降雨事件，从而大大减少计算降雨侵蚀力的工作量，并提高土壤侵蚀预报精度。利用陕西团山沟小流域及所在3个小区1961－1969年的降雨过程资料，以漏选和多选降雨事件的降雨侵蚀力相等为原则，分别建立了黄土高原坡面侵蚀的侵蚀性降雨雨量标准12mm，平均雨强标准0.04mm/min，最大30min雨强标准0.25mm/min。其中时段雨强标准筛选精度最高，可剔除88％以上的降雨事件，只有5.3％的错选度。其次是平均雨强标准，雨量标准筛选精度最差 ...
谢云 刘宝元 等
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Predicting Multi-Scenario Land Use Changes and Soil Erosion in the Huaihe River Basin Based on Coupled PLUS-CSLE Model [PDF]
[Objective] Understanding the future temporal and spatial evolution of land use and soil erosion in the Huaihe River Basin is of significant importance for rational and coordinated use of land resources, formulating future soil and water conservation ...
CHEN Lei +8 more
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Shuitu Baochi Xuebao, 2021 针对降雨和床面大糙度共同作用下坡面降雨径流侵蚀不平衡输沙特性研究薄弱的问题，采用室内模拟降雨试验的方法，研究不同降雨强度和坡长条件下的坡面降雨径流侵蚀输沙特性。结果表明：（1）坡面为裸坡、坡度为10°条件下，径流含沙量随坡长的增加呈增大趋势，当坡长由1 m增加至8 m时，同一雨强下径流含沙量增大3.28~7.15倍；径流含沙量随雨强的增大而增加，当雨强由40 mm/h增大至120 mm/h时，同一坡长下径流含沙量增加1.41~2.97倍。（2）分析降雨径流侵蚀条件下 ...
周凡凡 +6 more
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Distribution Characteristics and Coupling Relationship Between Soil Erosion and Hydrologic and Sediment Connectivity in Changchong River Basin [PDF]
[Objective] To clarify the distribution characteristics and coupling relationship between soil erosion and hydrologic and sediment connectivity in Changchong River Basin, and to provide basis for soil erosion control and soil erosion prevention in this ...
LI Jianing +4 more
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Analysis of Soil Erosion Intensity Change Trajectories and Their Driving Factors in Yunnan Province Based on An Improved Stability Mapping Method [PDF]
[Objective] To elucidate the change trajectories of soil erosion intensity in Yunnan Province from 1990 to 2022, and analyze the types of changes and their driving factors, in order to provide a scientific foundation for effective soil erosion control ...
HUANG Bangmei +4 more
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Shuitu Baochi Xuebao, 1994 在分析了子午岭林区开垦裸露地降雨侵蚀资料的基础上，首次研究了不同地形部位开垦裸露地上的侵蚀性降雨底值，侵蚀性降雨雨型与土壤侵蚀量的关系和降雨侵蚀力定量指标及其与土壤侵蚀量的关系，其结构表明，引起土壤侵蚀性降雨底值次降雨量为１０ｍ，Ｉ１０为０．４ｍｍ／ｍｉｎ或Ｉ３０为０．２５ｍｍ／ｍｉｎ。在侵蚀性降雨雨型中，以突发型侵蚀性降雨雨型引起的侵蚀量最大，其次为峰值型 ...
郑粉莉 唐克丽
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Characteristics and Drivers of Spatial and Temporal Soil Erosion in Anshun City, Karst Region [PDF]
[Objective] To explore the spatial and temporal evolution of soil erosion in Anshun City, southwest karst region, as well as the main controlling factors of soil erosion, and to master the soil erosion situation in the region, in order to help the ...
LI Yuan, LIU Ziqi, WU Wenxian
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Shuitu Baochi Xuebao, 2021 自然条件下降雨多以间歇形式出现，而坡面土壤侵蚀又是一个渐变发育的复杂过程。通过3个雨强（60，90，120 mm/h）、5个坡度（5°，10°，15°，20°，25°）下的15场室内模拟降雨，研究一、二次降雨条件下不同雨强、坡度及降雨量对红壤坡面径流和侵蚀过程的影响，探讨间歇降雨条件下坡面侵蚀发育过程及其主要影响因素的变化。结果表明：（1）二次降雨的产流时间相比一次降雨均提前，一次降雨径流总量受到雨强、坡度和降雨量的共同影响，15°坡度是径流总量变化的一个转折点，二次降雨时降雨量的作用减弱 ...
李霞 +6 more
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Shuitu Baochi Xuebao, 2002 降雨是导致土壤流失的动力因素,降雨侵蚀力反映由降雨引起土壤侵蚀的潜在能力,准确评估计算降雨侵蚀力是定量预报土壤流失的重要环节.本文回顾总结了国内外降雨侵蚀力的研究进展,在此基础上提出了我国今后降雨侵蚀力研究的发展方向.
章文波 谢云 刘宝元
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