Results 31 to 40 of about 3,848 (174)
Shuitu Baochi Xuebao, 2020 为分析透气隔水（弱透水）埋体促进水分入渗与溶质运移功效，开展了不同容重（1.40，1.45，1.50，1.60 g/cm3）透气隔水（弱透水）埋体的一维垂直土柱入渗试验，分析了不同容重的透气隔水（弱透水）埋体对土壤水分入渗与溶质分布的影响。结果表明，透气隔水（弱透水）埋体能够增加土壤累积入渗量，推动湿润锋运移，在一定范围内，随着透气隔水（弱透水）埋体容重增加，湿润锋推进速度与土壤入渗率均增加。600 min时，土壤累积入渗量相对增加7.42%~29.17%，湿润锋深度达到27 cm，入渗时间相对减少26.
刘阳 +4 more
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Shuitu Baochi Xuebao, 2007 通过肥液间歇和连续入渗实验,分析了肥液间歇入渗土壤湿润特性。结果表明,肥液间歇入渗湿润锋运移速度较连续入渗慢,并随周期数的增加而减小;分析了肥液间歇入渗湿润锋运移的分段模型,提出了由连续入渗湿润锋运移参数计算间歇入渗湿润锋运移距离的简化模型,实例计算表明该方法简单有效;对比了肥液间歇入渗和连续入渗土壤含水量的分布,肥液间歇入渗土壤含水量分布较连续入渗均匀,相同深度土层中入渗水量占总入渗量的比例较大。
吴军虎, 乔莲莲, 费良军
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Meso and micro pore structure test of Jingyang shallow loess [PDF]
Rainfall and irrigation are the most common driving forces of geological disasters in loess areas. Generally, the infiltration depth is shallow and mainly controlled by microchannels.
Hengfei SUN +5 more
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Shuitu Baochi Xuebao, 2020 为探究不同浑水含沙率对层状土入渗特性的影响，通过室内膜孔灌自由入渗试验，研究了以夹砂层位置为5~10 cm的层状土条件下清水和不同含沙率的浑水（2%，5%，7%，9%）入渗的累积入渗量、湿润锋运移规律以及湿润体内土壤含水量分布情况，分别建立了层状土不同含沙率浑水膜孔灌入渗量、湿润锋运移距离与入渗时间之间的关系；提出了基于清水入渗的不同浑水含沙率单位膜孔面积累积入渗量模型。结果表明：不同浑水含沙率累积入渗量变化趋势一致，但含沙率越大，累积入渗量越小，浑水减渗作用越明显，对应入渗系数越小，入渗指数越大 ...
白瑞, 费良军, 陈琳, 钟韵
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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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Shuitu Baochi Xuebao, 2022 水中带沙是浑水灌溉较清水灌溉的本质区别, 为揭示浑水灌溉的节水减渗机制, 通过浑水膜孔灌自由入渗室内试验, 以清水入渗为对照, 研究了浑水膜孔灌入渗能力、湿润锋运移距离、湿润体含水率、致密层土壤颗粒组成及落淤层厚度等随入渗时间的变化规律, 提出了土壤含水率与湿润锋运移距离之间的量化模型, 分别建立了落淤层厚度与入渗时间、滞留层的滞留量与滞留深度之间的关系。结果表明: 浑水泥沙对土壤水分入渗的影响较大, 在入渗结束时浑水较清水的累积入渗量减幅达27.83%;土壤含水率从膜孔中心到湿润锋面逐渐减小 ...
钟韵 +6 more
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Strategies of high efficiency water usage promoted by microbial remediation in coal mining areas of western China [PDF]
The fragile ecological environment in the western coal mining areas of China, compounded by intensive mining activities, has led to water and soil erosion, soil degradation, and damaged root systems.
Chao WU +4 more
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Shuitu Baochi Xuebao, 2020 在快速城市化过程中，人为侵入体大量混入绿地，改变了土壤的三相组成及孔隙特征，但其对城市绿地土壤的入渗影响仍不清楚。基于一维垂直土柱入渗模拟，以典型人为侵入体砖块和混凝土碎块为例，研究其对城市绿地土壤水分入渗的影响特征。结果表明：（1）人为侵入体的混入均会抑制城市绿地土壤水分下渗，导致其稳定入渗速率降低，累积入渗量、湿润锋距离和土壤体积含水量减小，深层土壤水分变化滞后。同一配比下，以混凝土碎块对土壤水分入渗的抑制作用更为明显（P0.1），其对土壤水分下渗的抑制作用渐趋减弱。（3）不同类型人为侵入体及配比下，
方政 +6 more
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HYDROLOGICAL OBSERVATION IN AN EVERGREEN BROAD LEAVED FOREST IN THE WUYI MOUNTAINS [PDF]
, 1997 [中文文摘]对武夷山甜槠林成熟林水文学效应的研究结果表明：观测期间，年大气降水量2678.78ｍｍ，林内雨量2182.04ｍｍ，林冠截留量为496.74ｍｍ；林内雨中，穿透雨量2082.08ｍｍ，树干茎流99.96ｍｍ；到达甜槠林地作用面的林内雨量中，被地表枯枝落叶层截留的雨量为159.84ｍｍ，地表径流量11.6ｍｍ，地下渗流量109.32ｍｍ，其余林内雨量形成土壤含水量增量并由地表物理蒸发、根系吸收以及植物蒸腾所消耗；甜槠林地o~20０ｃｍ土层水分初渗率78.6ｍｍ·ｍｉｎ－１，稳渗率１５．５ｍｍ ...
何建源(福建武夷山国家级自然保护区管理局) +7 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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