Results 31 to 40 of about 561 (143)
Shuitu Baochi Xuebao, 2018 为了研究荒漠草原不同土壤类型对降水的响应过程，在宁夏盐池县皖记沟村选取分布较广的灰钙土、风沙土和基岩风化残积土为研究对象，采用双环法测定其入渗过程，分析并比较三者的入渗特征，利用模型拟合土壤入渗过程。结果表明：研究区内3种类型土壤入渗过程大致可分为3个阶段，0~5 min入渗速率急剧下降阶段，5~10 min入渗速率逐渐变缓并趋于稳定及30 min后入渗速率达到相对稳定的状态。通过对不同土壤初始入渗速率、稳定入渗速率及60 min累积入渗量对比分析，发现不同土壤类型的入渗特征存在差异 ...
陈娟 +5 more
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Characteristics of Soil Saturated Hydraulic Conductivity and Its Influencing Factors at Different Landscape Positions in a Small Peak-Cluster Depression Watershed of the Karst Region [PDF]
[Objective] Peak-cluster depression is one of the important karst landform types. Exploring the influence of different landscape positions on soil saturated hydraulic conductivity (Ks) can provide a reference for further understanding of the hydrological
HOU Senzheng +5 more
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Responses of Loess Ground with Different Slopes and Vegetation Covers to Rainfall Infiltration [PDF]
[Objective] To investigate the soil moisture response to rainfall in loess ground with different slopes and vegetation types. [Methods] Eight in-situ observation plots were established, including flat surfaces with bare soil, Artemisia cover, and Robinia
HU Xiangyang +6 more
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Shuitu Baochi Xuebao, 2018 利用黄丘区第三副区野外坡面模拟降雨试验，研究了3种覆盖度（30%，60%，90%）和5种降雨强度（1，1.5，2，2.5，3 mm/min）下15°草地坡面土壤入渗过程变化规律。结果表明：（1）土壤入渗率随着草被覆盖度和降雨强度的增加不断增大，草被覆盖度越大，土壤入渗率的增加效果越显著，土壤初始入渗率与降雨强度呈指数函数关系，土壤稳定入渗率与降雨强度呈幂函数关系。（2）土壤累积入渗量与降雨时间呈良好的幂函数关系，草被覆盖度越大，土壤累积入渗增量越明显，降雨强度对土壤累积入渗量的影响存在阶段性差异。（3 ...
何子淼, 肖培青
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, 2004 本文总结了植被及其不同部分在控制水土流失中的作用 ,在此基础上总结了利用植被控制水土流失的方法措施和目前的研究热点 ,并提出现状研究中的不足和将来的研究前景。福建省重大科技项目 (项目编号 :2 0 0 2H0 0 ...
黄云凤
core
Progress in developments and applications of the HYDRUS model and associated coupling model packages [PDF]
HYDRUS model is widely used in agricultural irrigation and pollution transport because it can comprehensively consider the movement of water, heat, and pollutants in the soil-plant-atmosphere system.
Bei ZHANG +5 more
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Research on sediment reduction benefits of engineering measures on waste rock slope under different rainfall intensities [PDF]
The dump slope of open-pit coal mines is characterized by steep gradients, loose structure, and poor stability, leading to severe soil erosion under heavy rainfall.
Gang LYU +3 more
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Shuitu Baochi Xuebao, 2005 通过不同溶液浓度土壤间歇入渗实验．研究了溶液浓度对污灌和灌施条件下波涌灌溉土壤间歇入渗水分入渗特性的影响．分析了土壤间歇入渗量随溶液浓度增渗的机理，为进一步研究污灌和施肥条件下土壤间歇入渗溶质运移规律奠定了基础。
吴军虎 费良军 李怀恩 赵茜
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Response Characteristics of Soil Saturated Hydraulic Conductivity after Returning Orchard to Farmland on the Loess Plateau [PDF]
[Objective] To explore the change rule and influencing factors of soil saturated hydraulic conductivity (Ks) after returning orchard to farmland. [Methods] Aging apple orchards (AO) and orchards with different tillage years (2 a, 4 a, 6 a, 10 a) on the ...
JIA Xiaoxu +6 more
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Shuitu Baochi Xuebao, 2017 为揭示排土场复垦区不同土地利用类型土壤的水源涵养功能，采用野外实地双环入渗试验和室内理化分析方法，系统地研究了海州露天煤矿排土场复垦区不同土地利用类型（乔木林地、灌木林地、农用地、荒草地）土壤入渗特性及其影响因素。结果表明：不同土地利用类型下的土壤初始入渗率、稳定入渗率和累计入渗量均表现为乔木林地>灌木林地>农用地>荒草地；不同土地利用类型下土壤入渗过程的拟合优度存在差异，G-P综合模型、Kastiakov模型、Horton模型的平均拟合优度依次为0.926，0.908，0.905。G ...
吕 刚 +4 more
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