Results 21 to 30 of about 561 (143)
Shuitu Baochi Xuebao, 2020 为研究林分密度对土壤入渗性能的影响，以晋西黄土区5种密度（1 075，1 300，1 575，1 800，2 150株/hm2）刺槐（Robinia pseudoacacia Linn.）林为研究对象，采用双环入渗法测定其土壤入渗过程，并对入渗特征指标与土壤理化性质的相关性进行分析。结果表明：（1）不同密度刺槐林土壤入渗过程的变化规律一致，均经过瞬间入渗（0~5 min）、缓慢入渗（5~40 min）和稳定入渗（40 min后）阶段。（2）土壤初始入渗速率、稳定入渗速率 ...
王珊珊 +5 more
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Shuitu Baochi Xuebao, 2022 为揭示退耕对石漠化区露石岩—土界面土壤渗透特性的影响,以典型石漠化坡耕地为对照,选择休闲地、退耕灌草和果园为研究对象,采用环刀法研究了平直、外凸和内凹型露石岩—土界面土壤渗透特性。结果表明:(1)不同退耕类型岩—土界面土壤入渗过程及特征差异较大,从初始入渗率到稳定入渗率衰减幅度在0.350~55.756 mm/min,而不同岩—土界面形状间土壤入渗速率差异较大;(2)不同退耕类型岩—土界面土壤入渗速率的主要影响因素为毛管孔隙度和非毛管孔隙度,初始入渗率、平均入渗率和稳定入渗率均与毛管孔隙度呈极显著负相关(
刘婷婷 +4 more
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Developments and applications of terrestrial biosphere model [PDF]
, 2020 Exchanges of energy and matter between terrestrial biosphere and atmosphere and hydrosphere create critical feedbacks to Earth’s climates. To quantify how terrestrial ecosystems respond and feedback to global changes, terrestrial biosphere model (TBM ...
Chang, J., Peng, S.-S., Yue, C.
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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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Shuitu Baochi Xuebao, 2023 为探究不同盖度生物结皮对入渗特征的影响,在红壤丘陵区咸宁选取第四纪黏土发育土壤(S型)和泥质页岩发育土壤(N型)上的生物结皮,设计6个盖度水平(裸地,1%~20%,20%~40%,40%~60%,60%~80%,80%~100%),使用微型圆盘入渗仪(mini disk)测定土壤入渗过程,探究入渗过程的影响因素,同时采用3种常见的入渗模型对入渗过程进行拟合,并评价模型适用性。结果表明:(1)相对于裸地,生物结皮发育提高土壤有机质和黏粒含量,增加结皮厚度和生物量,降低砂粒含量。(2 ...
李雨晨 +4 more
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Soil Erosion Process Under the Combined Action of Water and Gravity on Red Soil Slope [PDF]
[Objective] Soil erosion is one of the most important ecological and environmental problems in the world. It is of great significance to reveal the coupling mechanism of water and gravity combined erosion by analyzing the water and sediment process of ...
MA Lan +4 more
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Exploration on the surface water leakage mechanism of travertine pools in Salix cupularis shrub area of Huanglong Scenic Spot, Sichuan Province [PDF]
Recently, some travertine landscape groups in Huanglong Scenic Spot have been degraded to varying degrees. Surface water leakage, blackening and desertification have occurred on a large scale in the dense distribution area of Salix cupularis shrub, which
Dong SUN +8 more
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Shuitu Baochi Xuebao, 2005 分析了土壤容重和气阻对一维垂直积水入渗的入渗率、累积入渗量以及湿润锋的影响,并对入渗过程中土壤平均含水率增量进行了研究。容重和气阻均对入渗率、累积入渗量和湿润锋有明显的影响:容重增加导致累积入渗量减少的减渗率在入渗过程中为一常数,相对于容重为1.3g/cm3土壤的累积入渗量,容重为1.4g/cm3和1.5g/cm3土壤的减渗率分别为31.79%和52.03%。容重增加导致湿润锋减少的减渗率在入渗过程中并非一常数,受到了入渗时间的影响;气阻导致累积入渗量和湿润锋减少的减渗率随基准入渗量的增加而变大 ...
张振华 谢恒星 刘继龙 蔡焕杰
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Eco-treatment Engineering of Sewage Forest Land in Xiamen [PDF]
, 2006 文章介绍了厦门市狐尾山原生生活污水林地生态处理工程依循“污水-土壤-植物”资源再生机制,提出了“截流井+氧化塘(调节池)+污水动力输送、管网投配+林地+城市景观林地 ...
卢昌义, 胡宏友, 谢海生
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The Long-term Variations and Influencing Factors of Soil Saturated Hydraulic Conductivity in Terraces on the Loess Plateau [PDF]
[Objective] The long-term variations of soil saturated hydraulic conductivity (Ks) and its primary controlling factors in terraces on the Loess Plateau were explored. [Methods] Terraces were selected for three land use types, i.e.
CHANG Heng +6 more
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