Transport of through a Thick Vadose Zone.

abstract：:Natural fluctuations in light intensity may significantly affect the amount of CO assimilated by plants and ecosystems. Little is known, however, about the interactive effect of dynamic light conditions and atmospheric CO concentrations. The hypothesis that elevated CO concentration (EC; 700 μmol CO mol) increases pho...

journal_title：Journal of environmental quality

authors： Holišová P,Zitová M,Klem K,Urban O

更新日期：2012-11-01 00:00:00

abstract：:High suspended sediment (SPS) concentration commonly exists in many Asian rivers. Furthermore, climate change can cause high floods and lead to the resuspension of sediments and soil erosion, resulting in high SPS concentration in many natural waters. This research studied the impact of the presence of SPS and organic...

journal_title：Journal of environmental quality

authors： Xia X,Zhou Z,Zhou C,Jiang G,Liu T

更新日期：2011-01-01 00:00:00

abstract：:There is a need for treatment technologies that can eliminate environmental problems associated with anaerobic lagoons. These technologies must be able to capture nutrients, kill pathogens, and reduce emissions of ammonia and nuisance odors. To meet these needs, a full-scale wastewater treatment plant was installed as...

journal_title：Journal of environmental quality

authors： Loughrin JH,Szogi AA,Vanotti MB

更新日期：2006-01-03 00:00:00

abstract：:Knowledge of pesticide distribution and persistence in nursery recycling pond water and sediment is critical for preventing phytotoxicity of pesticides during water reuse and to assess their impacts to the environment. In this study, sorption and degradation of four commonly used pesticides (diazinon, chlorpyrifos, ch...

journal_title：Journal of environmental quality

authors： Lu J,Wu L,Newman J,Faber B,Merhaut DJ,Gan J

更新日期：2006-08-09 00:00:00

abstract：:Metal-thiol complexes can enhance metal uptake by plant roots and microorganisms, therefore it is important to determine whether thiols effectively solubilize these metals from the soil matrix. Extractions were conducted by combining 1 g contaminated soil and 10 mL of 10 mmol L(-1) thiol solution and shaking for 1 h. ...

journal_title：Journal of environmental quality

authors： Vadas TM,Ahner BA

更新日期：2009-10-29 00:00:00

abstract：:Ultraviolet-B radiation is an environmental stress for plants and this situation could become aggravated in the next decades. In this study we used Italian ryegrass (Lolium multiflorum Lam.) as a model system to test whether an environmental stress derived from global change, such as UVB, can influence the efficacy of...

journal_title：Journal of environmental quality

authors： Martínez-Ghersa MA,Vila Aiub MM,Ghersa CM,Gundel P,Satorre EH

更新日期：2004-07-01 00:00:00

abstract：:Synthetic nitrogen fertilizer has been a double-edged sword, greatly improving human nutrition during the 20th century but also posing major human health and environmental challenges for the 21st century. In August 2013, about 160 agronomists, scientists, extension agents, crop advisors, economists, social scientists,...

journal_title：Journal of environmental quality

authors： Davidson EA,Suddick EC,Rice CW,Prokopy LS

更新日期：2015-03-01 00:00:00

abstract：:We investigated the seasonal patterns of denitrification rates and potentials in soil profiles along the topohydrosequence formed at the upland-wetland interface in three riparian wetlands with different vegetation cover (i.e., forest, understory vegetation, and grass). Denitrification was measured using the acetylene...

journal_title：Journal of environmental quality

authors： Clément JC,Pinay G,Marmonier P

更新日期：2002-05-01 00:00:00

abstract：:Alum [Al(SO4) ·14HO] addition to poultry litter has been shown to reduce ammonia (NH) concentrations in poultry houses; however, its effects on greenhouse gas (GHG; NO, CH, and CO) emissions is unknown. The objectives of this study were to determine the effects of alum additions on (i) in-house NH and GHG concentratio...

journal_title：Journal of environmental quality

authors： Eugene B,Moore PA,Li H,Miles D,Trabue S,Burns R,Buser M

更新日期：2015-09-01 00:00:00

abstract：:The use of marginal lands for biofuel production has been proposed as a promising solution for meeting biofuel demands while avoiding food-feed-fuel conflicts. However, uncertainty surrounds whether marginal lands can be reliably located, as well as their inherent biofuel potential and the possible environmental impac...

journal_title：Journal of environmental quality

authors： Bandaru V,Izaurralde RC,Manowitz D,Link R,Zhang X,Post WM

更新日期：2013-11-01 00:00:00

abstract：:Pesticide transport through the unsaturated zone is a function of chemical and soil characteristics, application, and water recharge rate. The fate and transport of 82 pesticides and degradates were investigated at five different agricultural sites. Atrazine and metolachlor, as well as several of the degradates of atr...

journal_title：Journal of environmental quality

authors： Hancock TC,Sandstrom MW,Vogel JR,Webb RM,Bayless ER,Barbash JE

更新日期：2008-05-02 00:00:00

abstract：:The state of Iowa requires developing total maximum daily loads (TMDLs) for over 400 water bodies that are listed on the 303(d) list of the impaired waters. The Raccoon River watershed, which covers approximately 9400 km2 of prime agriculture land and represents a typical Midwestern corn-belt region in west-central Io...

journal_title：Journal of environmental quality

authors： Manoj K,Wolter CF,Schilling KE,Gassman PW

更新日期：2010-07-01 00:00:00

abstract：:There are few beneficial management practices (BMPs) with demonstrated efficacy in snowmelt-dominated regions. Small reservoirs are a BMP that can help mitigate flooding and reduce sediment transport, while reducing export of dissolved nutrients. To understand controls on nitrate removal and assess how this ecosystem ...

journal_title：Journal of environmental quality

authors： Gooding RM,Baulch HM

更新日期：2017-01-01 00:00:00

abstract：:Drift from pesticide spray application can result in contamination of nontarget environments such as surface waters. Azinphos-methyl (AZI) and endosulfan (END) deposition in containers of water was studied in fruit orchards in the Western Cape, South Africa. Additionally, attention was given to the contamination in fa...

journal_title：Journal of environmental quality

authors： Schulz R,Peall SK,Dabrowski JM,Reinecke AJ

更新日期：2001-05-01 00:00:00

abstract：:Standard methods for the evaluation of recreational water quality rely on generic bacterial indicators such as . However, does not provide enough information to determine fecal source or public health risk. The stsudy objective was to determine factors influencing the presence of and host-specific markers (HSM) from u...

journal_title：Journal of environmental quality

authors： Gibson KE,Lee JA,Jackson JM,Smith LN,Almeida G

更新日期：2017-09-01 00:00:00

abstract：:Urban sewage sludge (USS) is increasingly applied to agricultural soils, but mixed results have been reported because of variations in reuse conditions. Most field trials have been conducted in cropping systems, which conceal intrinsic soil responses to sludge amendments due to the rhizosphere effect and farming pract...

journal_title：Journal of environmental quality

authors： Hechmi S,Hamdi H,Mokni-Tlili S,Ghorbel M,Khelil MN,Zoghlami IR,Benzarti S,Jellali S,Hassen A,Jedidi N

更新日期：2020-07-01 00:00:00

abstract：:Poultry litter (PL) is a by-product of broiler production. Most PL is land applied. Land-applied PL is a valuable nutrient source for crop production but can also be a route of environmental contamination with manure-borne bacteria. The objective of this study was to characterize the fate of pathogens, fecal indicator...

journal_title：Journal of environmental quality

authors： Cook KL,Netthisinghe AM,Gilfillen RA

更新日期：2014-09-01 00:00:00

abstract：:Previous studies have suggested that phenolic acids from legume green manures may contribute to weed control through allelopathy. The objectives of this study were to investigate the oxidation reactions of phenolic acids in soil and to determine the subsequent effects of oxidation upon phytotoxicity. Soils were reacte...

journal_title：Journal of environmental quality

authors： Ohno T

更新日期：2001-09-01 00:00:00

abstract：:Prudent interventions for reducing selenium (Se) in groundwater and streams within an irrigated river valley must be guided by a sound understanding of current field conditions. An emerging picture of the nature of Se contamination within the Lower Arkansas River Valley in Colorado is provided by data from a large num...

journal_title：Journal of environmental quality

authors： Gates TK,Cody BM,Donnelly JP,Herting AW,Bailey RT,Mueller Price J

更新日期：2009-10-29 00:00:00

abstract：:Incorporation of manure into cultivated soils is generally recommended to minimize nutrient losses. A 3-yr study was conducted to evaluate sediment and nutrient losses with different tillage methods (moldboard plow, heavy-duty cultivator, double disk, and no-incorporation) for incorporation of beef cattle manure in a ...

journal_title：Journal of environmental quality

authors： Little JL,Bennett DR,Miller JJ

更新日期：2005-09-08 00:00:00

abstract：:An important aspect for the evaluation of fire effects in slash-and-burn agricultural system, as well as in wildfire, is the soil burn severity. The objective of this study is to estimate the maximum temperature reached in real soil burn events using energy dispersive X-ray fluorescence (EDXRF) as an analytical tool, ...

journal_title：Journal of environmental quality

authors： Melquiades FL,Thomaz EL

更新日期：2016-05-01 00:00:00

abstract：:Use of organic by-products as soil amendments in agricultural production exemplifies a strategy for converting wastes to resources. The overall objective of this research was to evaluate the short- and intermediate-term effects of repeatedly amending sandy soil with paper mill residuals (PMR) and composted PMR in a ve...

journal_title：Journal of environmental quality

authors： Foley BJ,Cooperband LR

更新日期：2002-11-01 00:00:00

abstract：:Trace elements (TEs) are universally present in environmental media, including soil, but agriculture uses some materials that have increased TE concentrations. Some TEs (e.g., Cu, Se, and Zn) are added to animal feeds to ensure animal health. Similarly, TEs are present in micronutrient fertilizers. In the case of phos...

journal_title：Journal of environmental quality

authors： Sheppard SC,Grant CA,Sheppard MI,de Jong R,Long J

更新日期：2009-03-25 00:00:00

abstract：:High grazing pressure can lead to soil erosion in pastures, causing increased sediment delivery to waterways. The objectives of this research were to evaluate the impact of grazing management and buffer strips on soil erosion by assessing soil physical properties, hydrology, and sediment loads from pastures fertilized...

journal_title：Journal of environmental quality

authors： Pilon C,Moore PA,Pote DH,Pennington JH,Martin JW,Brauer DK,Raper RL,Dabney SM,Lee J

更新日期：2017-03-01 00:00:00

abstract：:Bacterial contamination of karst aquifers is a global concern as water quality deteriorates in the face of decreasing water security. Traditional abiotic groundwater tracers, which do not exhibit surface properties similar to bacteria, may not be good proxies for risk assessment of bacterial transport in karst environ...

journal_title：Journal of environmental quality

authors： Bandy A,Cook K,Fryar AE,Polk J

更新日期：2018-01-01 00:00:00

abstract：:Enzyme catalyzed reactions are generally considered the rate-limiting step in organic matter degradation and may be significantly influenced by the structure and composition of plant communities. Changes in these rates have the potential to effect long-term peat accumulation and influence the topography of a wetland e...

journal_title：Journal of environmental quality

authors： Penton CR,Newman S

更新日期：2008-05-02 00:00:00

abstract：:Land application of manure can exacerbate nutrient and contaminant transfers to the aquatic environment. This study examined the effect of injecting a dairy cattle (Bostaurus L.) manure slurry on mobilization and leaching of dissolved, nonreactive slurry components across a range of agricultural soils. We compared lea...

journal_title：Journal of environmental quality

authors： Glaesner N,Kjaergaard C,Rubaek GH,Magid J

更新日期：2011-03-01 00:00:00

abstract：:County-level agricultural statistics were aggregated at the watershed level to provide estimates of trends in land use and agricultural management in the Maumee and Sandusky River watersheds during the period 1975-1995. Average farm size increased by 40% or more, but the number of farms decreased by nearly 40%; the to...

journal_title：Journal of environmental quality

authors： Richards RP,Baker DB,Eckert DJ

更新日期：2002-01-01 00:00:00

abstract：:Porosity and permeability of porous and fractured geological media decrease with the exploitation of formation fluids such as petroleum, natural gas, or ground water. This may result in ground subsidence and a decrease of recovery of petroleum, natural gas, or ground water. Therefore, an evaluation of the behavior of ...

journal_title：Journal of environmental quality

authors： Chen Q,Kinzelbach W,Ye C,Yue Y

更新日期：2002-03-01 00:00:00

abstract：:Soil N2O emissions from three corn (Zea mays L.)-soybean [Glycine max (L.) Merr.] systems in central Iowa were measured from the spring of 2003 through February 2005. The three managements systems evaluated were full-width tillage (fall chisel plow, spring disk), no-till, and no-till with a rye (Secale cereale L. 'Rym...

journal_title：Journal of environmental quality

authors： Parkin TB,Kaspar TC

更新日期：2006-07-06 00:00:00