Results 31 to 40 of about 13,072 (157)
Shuitu Baochi Xuebao, 2018 针对淮北平原黄潮土水土流失严重的问题，为揭示其产流产沙规律，利用五道沟水文实验站大型人工模拟降雨径流试验场，开展了40，60，80 mm/h 3个雨强及5°，10°，15° 3个坡度产流产沙规律试验模拟。结果表明：坡面初始产流时间随坡度、雨强的增大而缩短，雨强、坡度越大缩短越不明显；单位时间产流、产沙量随降雨时间变化的转折点在产流后6~15 min，单位时间产流量随降雨时间变化表现为前期快速增加，中期缓慢增加，后期平稳，其中40，60 mm/h雨强单位时间产流量随坡度增加而减小，80 mm ...
杜明成 +4 more
doaj
Shuitu Baochi Xuebao, 2020 为了研究不同逆坡耕作强度导致的土壤位移对坡面水蚀的影响，以金沙江干热河谷区坡面径流小区为研究对象，在径流小区5°，10°，15°坡面上，进行单宽流量为0.6 m2/h的放水试验。在10°坡面的下坡位置设置0.05，0.10，0.20 m土层深度，分别代表连续耕作80，69，46年导致下坡位置土壤损失土层变薄情况。通过收集径流小区出口的产流量和产沙量，研究在不同坡度上的不同逆坡耕作强度导致的土壤位移对坡面产流率、产沙率、总流量和总产沙量的影响。结果表明：（1）在10°坡面，耕作年限越长，产流越快 ...
贾立志, 张泽洪
doaj
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Vanadium oxides are deemed competitive cathode candidates for aqueous zinc‐ion batteries (AZIBs), benefited from their high theoretical capacity and multiple crystalline structures. However, the sluggish reaction kinetics, poor reversibility, and high solubility have hindered the practical application.
Xiaoyu Fan +7 more
wiley +1 more source
Shuitu Baochi Xuebao, 2021 水土流失已成为我国主要的生态环境问题之一。基于安徽大别山区江子河小流域2012-2019年自然降雨径流泥沙观测资料，探讨雨型对不同农作物措施坡面产流产沙的影响，采用随机森林算法分析降雨因子与水沙之间的关系。结果表明，在不同场次降雨中，径流量、土壤流失量随降雨场次变化规律较一致，红薯措施产流量及土壤流失量较大，茶叶措施最小。降雨分为3类：A型降雨（低频率、长历时、大雨量、高雨强）、B型降雨（高频率、短历时、小雨量、低雨强）、C型降雨（较低频率、较长历时、中等雨量、较高雨强），对产流产沙的影响表现为A型 ...
张嘉懿 +3 more
doaj
Functional Ecology, Volume 40, Issue 1, Page 163-175, January 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma +12 more
wiley +1 more source
Shuitu Baochi Xuebao, 2017 为探求鲁中南山丘区坡面侵蚀规律，选取山东省泰安市药乡小流域，以4个坡面径流小区的降雨、径流、泥沙实测资料为基础，探究不同措施下各小区产流产沙的差异性和导致产流的降雨量临界值，并利用相关分析方法探究径流泥沙与降雨的相关关系。结果表明：（1）导致径流产生的降雨量临界值表现为裸地＜农地＜草地，草地临界降雨量分别比梯田种植、横坡种植、裸地高0.2，2.8，3.8 mm；（2）在相同的降雨条件下，各小区产流产沙均为裸地最大，其中产流量约为农地的1.3~4.3倍，约为草地的2.8倍；产沙量约为农地的3.1~10 ...
程甜甜 +4 more
doaj
Regulation &Governance, Volume 20, Issue 1, Page 35-63, January 2026.ABSTRACT Existing literature largely agrees that authoritarian regimes establish channels for political participation to gather valuable information on citizens' anti‐regime sentiments and policy preferences and to supervise lower‐level bureaucrats and firms.
Anton Bogs
wiley +1 more source
Integrative Conservation, Volume 4, Issue 4, Page 675-685, December 2025.We demonstrated that Anguilla japonica eDNA concentration was allometrically scaled with their body size in both the laboratory and riverine environments. Integrating body size allometry has the potential to improve population abundance estimates in the field, whereas further clarification is required for understanding eDNA production mechanisms ...
Toshiaki S. Jo +2 more
wiley +1 more source
Shuitu Baochi Xuebao, 2023 土壤结皮对坡面水分入渗及侵蚀产沙具有重要影响,但其具体作用过程和机理尚存在一定争论。以乌拉山矿山废弃地客土坡面为研究对象,采用原位冲刷试验,研究不同坡长(2,4,6,8,10 m)和产流产沙过程中,土壤结皮对径流泥沙的影响。结果表明:(1)2 m土壤结皮坡面总径流和泥沙量显著增加,分别是对照坡面的2.17,1.56倍;4~10 m土壤结皮坡面总径流量和总泥沙量降低,其中总径流量为对照坡面的67.17%~78.45%,总泥沙量为对照坡面的54.53%~83.56%。(2 ...
张馨予 +7 more
doaj
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 5, Page 582-588, November 2025.ABSTRACT Objective The corpus callosum (CC) is an interhemispheric structure that facilitates communication between the two cerebral hemispheres. Anomalies of the CC are frequent and associated with a wide spectrum of altered neurodevelopmental outcomes.
R. Corroenne +55 more
wiley +1 more source