Results 11 to 20 of about 2,581 (142)
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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Shuitu Baochi Xuebao, 2022 为探究不同坡度(5°,10°,20°,30°)条件下,不同质地砒砂岩土壤(灰白色、混合色、紫红色)的水分入渗特征及最优入渗模型。通过室内模拟土柱法对土壤的水分入渗特征和拟合结果进行对比分析。结果表明:(1)研究区不同坡面土壤容重在1.513~1.737 g/cm3,30°坡面下的灰白色砒砂岩土壤入渗能力较强,5°坡面下的紫红色砒砂岩土壤入渗能力较弱。(2) 在砒砂岩土壤一维垂直 入渗过程中,初始入渗率为2.000~8.600 cm/min,入渗时间3.500~5.000 min后达到稳定入渗率(0 ...
吴佩瑶 +4 more
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Shuitu Baochi Xuebao, 2021 为探索喀斯特地下浅层裂隙土壤水分运移规律，通过野外调查、单环入渗试验探索裂隙土壤的入渗特性及入渗模型的适应性。结果表明：（1）裂隙土壤初始入渗率为21.06~57.90 mm/min，入渗时间20~60 min后达到稳定入渗（4.21~13.69 mm/min），且入渗初期到最后的稳渗阶段存在着较大降幅（40.89%~89.08%），与非喀斯特地区相比，喀斯特裂隙土壤的入渗速率更快；裂隙土壤各入渗特征处于中等程度变异（变异系数为0.52~0.67）。（2）裂隙土壤各入渗特征与各土壤属性显著性相关较少 ...
朱列坤 +4 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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Shuitu Baochi Xuebao, 2022 为了改善黄土高原治沟造地土壤结构较差的问题, 采用一维定水头土柱模拟试验, 探讨了不同有机物料(生物有机肥、粉碎秸秆、50%粉碎秸秆+50%生物有机肥、尿素、对照)对治沟造地土壤湿润锋推移、累积入渗量、入渗速率和土壤水分蒸发特征的影响, 并采用Green-Ampt模型、Philip模型和Kostiakov模型拟合分析土壤水分入渗规律。结果表明: (1)粉碎秸秆与有机肥均降低了土壤水分移动速率, 增强了土壤持水能力; 粉碎秸秆同时降低了土壤稳定入渗速率, 与对照相比减小了17.65%;(2 ...
舒方瑜 +5 more
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Journal of Critical Infrastructure Policy, Volume 7, Issue 1, Spring/Summer 2026.ABSTRACT The infiltration of counterfeit, fraudulent, and suspect items into civil nuclear supply chains, notably within power generation and medical isotope production, poses severe safety and security threats. The ever‐increasing growth in nuclear installations (70 power plants are under construction and another 100 are in the planning stage) and the
Hafiz Ahmed
wiley +1 more source
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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Simulating the efficacy of wolf–dog hybridization management with individual‐based modeling
Conservation Biology, Volume 39, Issue 1, February 2025.In the photo, an introgressed adult wolf–dog in the Northern Apennines, Italy, not far from the city of Bologna. Part of a research program, this male has been sterilized and released back in its own pack with a Global Positioning Collar. Abstract Introgressive hybridization between wolves and dogs is a conservation concern due to its potentially ...
Nina Luisa Santostasi +4 more
wiley +1 more source
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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Open-pit mine slopes stability analysis based on analytic hierarchy process-fuzzy comprehensive evaluation model [PDF]
The bench slope within an open-pit coal mine plays an important supporting role for coal resource production and transportation. The stability evaluation of the slope is of great significance in guiding continuous mining operations within the mine.
Lichun ZHAO +6 more
core +1 more source