Results 51 to 60 of about 965 (177)

Estimating Soil Hydraulic Parameters of Different Textured Soils in Semiarid Duhok Conditions - Iraqi-Kurdistan Region by using RETC Program

Kufa Journal for Agricultural Sciences, 2021
RETC is a computer program that can be used to estimate soil hydraulic functions by easily determining soil properties. Using van Genuchten model in the RETC program gave high accuracy for estimating the hydraulic functions e.g., θ (h), k (θ) and D (h),
Akram Abbas Khalaf
doaj  

Estimation of soil water characteristic curve parameters in different models in light soils [PDF]

رویکردهای نوین در مهندسی آب و محیط زیست
In addition to soil water content, soil matric potential is also important for plant growth. Soil water characteristic curve (SWCC) or soil moisture characteristic curve describes soil water content and soil matric potential relationship.
jahangeer abedi koupaee, Nahid Pourabdollah, Shahab Ansari   +2 more
doaj   +1 more source

Analytical expressions for noncapillary soil water retention based on popular capillary retention models

Vadose Zone Journal, 2020
Recently, Weber et al. proposed a new model for noncapillary retention of soil water without introducing new parameters. The model is based on the integral of any given saturation function for the capillary part in log space.
Thilo Streck, Tobias K. D. Weber
doaj   +1 more source

Experimental Study on the Effect of Key Factors on the Soil–Water Characteristic Curves of Fine-Grained Tailings

Frontiers in Environmental Science, 2021
The soil–water characteristic curve (SWCC) is an essential parameter for studying the mechanical properties of unsaturated tailings, and it plays an important role in stability assessment and prediction of unsaturated tailings dams.
Baofeng Cao, Yakun Tian, Rong Gui, Yong Liu   +3 more
doaj   +1 more source

Determining the Optimal Water Storage Depth of Apple Orchards in the Chinese Loess Plateau: Balancing Soil Desiccation Mitigation, Plant Utilization, and Engineering Construction

Land Degradation &Development, EarlyView.
ABSTRACT Deep‐rooted plantations are central to dryland ecological restoration, yet their long‐term cultivation drives widespread deep soil desiccation, threatening ecosystem sustainability. While artificial water replenishment is a key deep soil desiccation mitigation strategy, the depth‐dependent positional effect of stored water on eco‐hydrological ...
Haoyan Wei, Xuguang Zhang, Yanwei Lu, Sk Shamshul Alam Kamar, Hailong He, Xia Wang, Min Li   +6 more
wiley   +1 more source

Closed-Form SWCC Functions for Granular Mixtures [PDF]

E3S Web of Conferences
Four closed-form water-retention functions (the Gardner, Fredlund – Xing, van Genuchten 4 and 5) were validated using the experimental, ideal water retention curve data of 7 granular fractions (fine gravel, sand and silt) and their 21 mixtures with ...
Imre Emőke, Bálint Ágnes, Firgi Tibor, Kabey Mwinken Delphin, Guida Giulia, Singh Vijay P., Rajkai Kálmán   +6 more
doaj   +1 more source

Innovations in polysaccharide‐based hydrogels in sustainable agriculture

Polymer International, EarlyView.
Polysaccharide‐based hydrogels are promising in sustainable agriculture, as these natural polymers have the ability to absorb water and nutrients and release them gradually in the soil, in addition to ensuring biodegradability and lower cost. However, some challenges still need to be overcome.
Marcia Leticia Monteiro Gomes, Josiély de Souza Martins, Cid Naudi Silva Campos, Dthenifer Cordeiro Santana, Rafael Felippe Ratke, Paulo Eduardo Teodoro, Edvani Curti Muniz, Edson Cavalcante Silva‐Filho, Josy Anteveli Osajima, Florisvaldo Clementino Santos Filho, Lucas Ferraz dos Santos, Maria Del Mar Orta Cuevas, Larissa Pereira Ribeiro Teodoro   +12 more
wiley   +1 more source

Quantification of flash flood peaks using computer simulation for potential hill torrents of Pakistan: A modeling study

River, EarlyView.
Abstract This study investigates rainfall runoff behavior of five major torrential Nullahs' of Dera Ghazi Khan (D. G. Khan) for flash flood events. The integration, and fusion of satellite‐based meteorological, topographical, and pedo‐transferred function's (PTF) derived soil hydraulic datasets at 250 m grid size substantially proves a viable approach ...
Bilal A. Munir, Sidra Hafeez, Muhammad Yasir, Raja Rehan, Muhammad A. Javed   +4 more
wiley   +1 more source

Frequency domain reflectometry and Hydrus-1D for parameterizing the van Genuchten equation in a sandy entisol

Discover Soil
This study hypothesized that estimating van Genuchten equation parameters using Hydrus-1D, with matric potential data (from tensiometry) and moisture data (from gravimetry and FDR probe), yields soil-water retention curves (SWRC) more consistent with ...
Ícaro Vasconcelos do Nascimento, Alexandre dos Santos Queiroz, Lucas de Sousa Oliveira, João Marcos Rodrigues dos Santos, Tiago da Costa Dantas Moniz, Raimundo Nonato de Assis Júnior, Helon Hébano de Freitas Sousa, José Carlos de Araújo, Carlos Tadeu dos Santos Dias, Cillas Pollicarto da Silva, Márcio Godofredo Rocha Lobato, Jaedson Cláudio Anunciato Mota   +11 more
doaj   +1 more source

Impact of River Morphology on River–Groundwater Exchange in Braided River Systems

Groundwater, EarlyView.
Abstract Braided river systems are an important source for groundwater recharge, but their complex morphology makes river–groundwater exchange fluxes difficult to estimate. Their river channel morphology changes frequently after floods, which has effects on recharge rates that have rarely been studied in the past.
Moritz Kraft, Antoine Di Ciacca, Thomas Wöhling   +2 more
wiley   +1 more source