Vadose zone flushing of fertilizer tracked by isotopes of water and nitrate [0.03%]
用水和硝酸同位素追踪肥料淋失至 vadose 区
Julie N Weitzman,J Renée Brooks,Jana E Compton et al.
Julie N Weitzman et al.
A substantial fraction of nitrogen (N) fertilizer applied in agricultural systems is not incorporated into crops and moves below the rooting zone as nitrate (NO3 -). Understanding mechanisms for soil N retention below the rooting zone and l...
Field evaluation of semi-automated moisture estimation from geophysics using machine learning [0.03%]
基于机器学习的半自动地球物理土壤含水量估计方法及田间验证研究
Neil Terry,Frederick D Day-Lewis,John W Lane Jr et al.
Neil Terry et al.
Geophysical methods can provide three-dimensional (3D), spatially continuous estimates of soil moisture. However, point-to-point comparisons of geophysical properties to measure soil moisture data are frequently unsatisfactory, resulting in...
Comparison between PVI2D and Abreu-Johnson's Model for Petroleum Vapor Intrusion Assessment [0.03%]
PVI2D与Abreu-Johnson模型在石油蒸汽入侵评估中的比较研究
Yijun Yao,Yue Wang,Iason Verginelli et al.
Yijun Yao et al.
Recently, we have developed a two-dimensional analytical petroleum vapor intrusion model, PVI2D (petroleum vapor intrusion, two-dimensional), which can help users to easily visualize soil gas concentration profiles and indoor concentrations...
Characterization and Remediation of Chlorinated Volatile Organic Contaminants in the Vadose Zone: An Overview of Issues and Approaches [0.03%]
氯代挥发性有机污染物特性及修复技术研究进展综述——以 vadose zone 为重点
Mark L Brusseau,Kenneth C Carroll,Michael J Truex et al.
Mark L Brusseau et al.
Contamination of vadose-zone systems by chlorinated solvents is widespread, and poses significant potential risk to human health through impacts on groundwater quality and vapor intrusion. Soil vapor extraction (SVE) is the presumptive reme...
Estimation of Contaminant Subslab Concentration in Vapor Intrusion Including Lateral Source-Building Separation [0.03%]
考虑横向源建筑间距的土壤气入侵污染物包气区浓度估算模型研究
Yijun Yao,Rui Shen,Kelly G Pennell et al.
Yijun Yao et al.
Most current vapor-intrusion screening models employ the assumption of a subsurface homogenous source distribution, and groundwater data obtained from nearby monitoring wells are usually taken to reflect the source concentration for several...
Multiple constraints on grassland evapotranspiration: implications for closing the energy balance [0.03%]
草地蒸腾受多种因素限制：对关闭能量平衡的意义的思考
Georg Wohlfahrt,Christoph Irschick,Bettina Thalinger et al.
Georg Wohlfahrt et al.
When using the eddy covariance (EC) method for measuring the ecosystem-atmosphere exchange of sensible and latent heat, it is not uncommon to find that these two energy fluxes fall short of available energy by 20-30 %. As the causes for the...
Soil Physical Constraints on Intrinsic Biodegradation of Petroleum Vapors in a Layered Subsurface [0.03%]
分层地质条件下土壤物理性质对石油蒸汽固有生物降解的约束作用
Andreas H Kristensen,Kaj Henriksen,Lars Mortensen et al.
Andreas H Kristensen et al.
Naturally occurring biodegradation of petroleum hydrocarbons in the vadose zone depends on the physical soil environment influencing field-scale gas exchange and pore-scale microbial metabolism. In this study, we evaluated the effect of soi...