Results 11 to 20 of about 3,848 (174)

未经干扰黑土的土壤贮水能力及水分入渗特征

open access: closedShuitu Baochi Xuebao, 2007
采用双环法和双环刀法,对典型黑土区内未经干扰的山杨天然次生林和草原化草甸(俗称五花草塘)土壤水分入渗特征及贮水能力进行测定研究。结果表明:与撂荒地、休闲地相比,未干扰黑土表现出更强的入渗及贮水能力。在1m深土层内,五花草塘饱和贮水量(5271.14 t/hm^2)高于次生林(4945.91 t/hm^2),但滞留贮水量二者相差不大,分别为402.20 t/hm^2和425.40 t/hm^2;五花草塘的初渗和稳渗速率分别是8.5 mm/min和1.2 mm/min,次生林相应为7.5 mm/min和3 ...
柴亚凡, 王恩姮, 陈祥伟
doaj   +1 more source

生物炭对西南喀斯特区石灰土水分入渗特征的影响

open access: greenShuitu Baochi Xuebao
[目的] 为探究玉米秸秆生物炭对西南喀斯特区石灰土水分入渗特征的影响。[方法] 设置5个生物炭施量梯度(0,2%,4%,6%和8%)、3种砾石含量土壤(10%,20%,30%)和无砾石土壤,进行一维积水入渗试验。[结果] (1)随生物炭施量增加,除10%砾石含量外,湿润锋运移深度均逐渐减少,且添加生物炭对含砾石土壤的抑制效果弱于无砾石情况。以60 min为例,无砾石时比未施生物炭(CK)减少10%~27%,3种含砾石情况则分别减少1%~17%,1%~16%,1%~21%,其中施量为8%时 ...
余辉   +6 more
doaj   +1 more source

Comparative Study on Soil Infiltration Characteristics of Different Land Use Types in Horqin Sandy Land [PDF]

open access: yes, 2022
[Objective] The differences in water infiltration characteristics between different land use types in Horqin sandy land were determined in order to provide a scientific reference for the study of water and material transport in the vadose zone in arid ...
Ala Musa   +3 more
core   +1 more source

容重对红壤条件下涌泉根灌水分入渗能力影响

open access: closedShuitu Baochi Xuebao, 2019
为研究红壤地区土壤容重对涌泉根灌水分入渗能力的影响,以江西红壤为例,采用室内试验,研究了不同容重条件下红壤涌泉根灌水分运移及其分布特性。结果表明:容重对土壤入渗能力有显著影响。随着容重的减小,湿润锋、累积入渗量、入渗率均呈增大趋势,且容重越小,减小的幅度越大。湿润锋、累积入渗量以及稳渗率与土壤容重均呈幂函数负相关关系;对于同一深度土层,土壤容重越大,对应的土壤含水率越小,在水分再分布过程中容重对含水率分布的影响逐渐减弱。通过Kostiakov入渗模型表明,土壤初始入渗速率随容重增大而减小,且容重越大 ...
刘风华, 代智光, 费良军
doaj   +1 more source

Effects of Biochar Additions on Moisture Content and Depletion of Loessial Soil [PDF]

open access: yes, 2023
[Objective] The influence of biochar additions on water storage and water retention capacity of loessial soil during the rainy season was clarified in order to provide basic theoretical support for the scientific use of biochar and to improve soil on the
Li Yuanyuan   +4 more
core   +1 more source

Comparison of Infiltration Capacity Between Grassland of Different Time Lengths of Abandonment and Sea Buckthorn Land in Inner Mongolia [PDF]

open access: yes, 2023
[Objective] The effect of different vegetation covers on soil infiltration capacity in Inner Mongolia was analyzed in order to provide a theoretical basis for ecological restoration and vegetation allocation of the region.
Cheng Shuai   +5 more
core   +1 more source

Influence Mechanism of Ionic Interface Reaction on Soil Porosity [PDF]

open access: yes, 2023
[Objective] The changes in surface charge properties of soil particles and the net force between particles were analyzed, in order to elucidate the influence mechanism of particle interaction on pore conditions.
Ding Wuquan   +3 more
core   +1 more source

Transdermal drug delivery in horses: An in vitro comparison of skin structure and permeation of two model drugs at various anatomical sites

open access: yesVeterinary Dermatology, Volume 34, Issue 3, Page 235-245, June 2023., 2023
Background – Oral and parenteral drug delivery in horses can be difficult. Equine‐specific transdermal drug formulations offer improved ease of treatment; development of such formulations requires a deeper understanding of the structural and chemical tissue barrier of horse skin. Hypothesis/Objectives – To compare the structural composition and barrier
Samuel C. Bizley   +3 more
wiley   +1 more source

Effects of Micro-topography Modification on Soil Moisture Dynamics in Cold and Arid Mining Areas of Southern Piedmont of Tianshan Mountain [PDF]

open access: yes, 2023
[Objective] The effects of spatial and temporal dynamics of soil moisture on micro-topography modification (0—50 cm) were determined in order to provide a scientific basis and theoretical support for land reclamation and ecosystem reconstruction in cold ...
Lai Chengyun   +5 more
core   +1 more source

Simulation Experiment on Effect of Surface Cracks Caused by Coal Mining on Soil Moisture Disturbance in Loess-Covered Area [PDF]

open access: yes, 2023
[Objective] The effect of surface cracks caused by coal mining on soil moisture changes in a loess-covered area was studied in order to provide data support for the study of soil moisture changes in coal mining subsidence area.
Fan Zhigang   +5 more
core   +1 more source

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