Modeling phosphorus transport in an agricultural watershed using the WEPP model.

abstract：:Nitrogen (N) application to crops generally results in increased nitrous oxide (NO) emissions. Commercially available, enhanced-efficiency N fertilizers were evaluated for their potential to reduce NO emissions from a clay loam soil compared with conventionally used granular urea and urea-ammonium nitrate (UAN) fertil...

journal_title：Journal of environmental quality

authors： Halvorson AD,Del Grosso SJ,Jantalia CP

更新日期：2011-11-01 00:00:00

abstract：:The increase in endocrine-disrupting compounds in the environment has generated research focused on the behavior of these compounds in natural soil and water ecosystems. To understand how estrogens behave in the soil environment as a result of 25+ yr of wastewater irrigation, soils from Penn State's "Living Filter" wa...

journal_title：Journal of environmental quality

authors： Woodward EE,Andrews DM,Williams CF,Watson JE

更新日期：2014-11-01 00:00:00

abstract：:Vertical distributions of (36)Cl and (99)Tc are presented from deep and shallow lysimeters above artificially controlled water tables for a 4-yr experiment from 1990 to 1993. Activity concentration profiles were all measured in late summer when a winter wheat (Triticum aestivum L. cv. Pastiche) crop was harvested. Aft...

journal_title：Journal of environmental quality

authors： Shaw G,Wadey P,Bell JN

更新日期：2004-11-01 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：:Although the reduction of nutrient loading between uplands and streams is sometimes considered evidence of the effect of wetlands acting as buffer zones, the influence of valley bottom wetlands (VBWs) on NO(3)(-) loading has seldom been assessed at the catchment scale. The objective of this study was to quantify the i...

journal_title：Journal of environmental quality

authors： Montreuil O,Merot P

更新日期：2006-10-27 00:00:00

abstract：:The effectiveness of various management practices to reduce phosphorus (P) loss from soil to water can potentially be improved by using by-product materials that have the capacity to sorb phosphorus. This study evaluated the P sorption and desorption potential, and the physicochemical characteristics of various phosph...

journal_title：Journal of environmental quality

authors： Leader JW,Dunne EJ,Reddy KR

更新日期：2008-01-04 00:00:00

abstract：:Accurately capturing dynamic soil response to disturbance effects in agroecosystem models remains elusive, thereby limiting projections of climate change mitigation potential. Perennial grasses cultivated in zero-tillage management systems hold promise as sustainable agroecosystems. High-yielding tropical C grasses of...

journal_title：Journal of environmental quality

authors： Crow SE,Sierra CA

更新日期：2018-07-01 00:00:00

abstract：:Copper sulfate (CuSO4) is applied periodically to commercial channel catfish (Ictalurus panctatus) ponds as an algicide or parasiticide. Current understanding of the chemistry of copper in soil-water systems suggests that copper may accumulate in pond sediments, although the forms and potential bioavailability of copp...

journal_title：Journal of environmental quality

authors： Han FX,Hargreaves JA,Kingery WL,Huggett DB,Schlenk DK

更新日期：2001-05-01 00:00:00

abstract：:In many regions, conservation tillage has replaced conventional tilling practices to reduce soil erosion, improve water conservation, and increase soil organic matter. However, tillage can have marked effects on soil properties, specifically nutrient redistribution or stratification in the soil profile. The objective ...

journal_title：Journal of environmental quality

authors： Cade-Menun BJ,Carter MR,James DC,Liu CW

更新日期：2010-09-01 00:00:00

abstract：:The contents and stable S isotope ratio (δS) values of total S, organic S, SO-S, and total reduced inorganic S (TRS) in typical limestone soil and yellow soil were analyzed in this study to examine the general distributions of S forms and their δS values in soils in karst areas of southwest China. Under a similar leve...

journal_title：Journal of environmental quality

authors： Zhang W,Liu CQ,Wang ZL,Zhang LL,Luo XQ

更新日期：2014-05-01 00:00:00

abstract：:Bacterial extracellular polymers (BEP) affect the translocation and fate of organic and inorganic pollutants in terrestrial and aquatic ecosystems. In this study, BEP from activated sludge was compared with sludge dissolved organic matter (DOM) in terms of behavior and effects on the mobilization and bioavailability o...

journal_title：Journal of environmental quality

authors： Zhou LX,Zhou SG,Zhan XH

更新日期：2004-01-01 00:00:00

abstract：:The New Zealand Greenhouse Gas Inventory (the NZ Inventory) uses country-specific data to quantify CH emissions from anaerobic ponds treating dairy farm effluent (315 Gg CO equivalent [CO-e] in 2009). In this study, we used literature data to: (i) evaluate the accuracy of the NZ Inventory's parameters used to quantify...

journal_title：Journal of environmental quality

authors： Chung ML,Shilton AN,Guieysse B,Pratt C

更新日期：2013-05-01 00:00:00

abstract：:For (134/137)Cs, and many other soil contaminants, research into transfer to plants has focused on particular crops and phytoremediation candidates, producing uptake data for a small proportion of all plant taxa. Despite the significance of differences in uptake between plant taxa, the capacity of soil-to-plant transf...

journal_title：Journal of environmental quality

authors： Willey NJ,Tang S,Watt NR

更新日期：2005-08-09 00:00:00

abstract：:Increased phosphorus (P) availability under flooded, anaerobic conditions may accelerate P loss from soils to water bodies. Existing knowledge on P release to floodwater from flooded soils is limited to summer conditions and/or room temperatures. Spring snowmelt runoff, which occurs under cold temperatures with freque...

journal_title：Journal of environmental quality

authors： Kumaragamage D,Concepcion A,Gregory C,Goltz D,Indraratne S,Amarawansha G

更新日期：2020-05-01 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：:This study compares two methods of dairy manure application-surface broadcast and shallow disk injection-on the fate and transport of natural estrogens in surface runoff from 12 field plots in central Pennsylvania. Ten natural surface runoff events were sampled over a 9-mo period after fall manure application. Results...

journal_title：Journal of environmental quality

authors： Mina O,Gall HE,Saporito LS,Kleinman PJ

更新日期：2016-11-01 00:00:00

abstract：:This study determined distribution of feces and urine from 36 lactating dairy cattle (Bos taurus) managed in a rotationally grazed 0.74-ha endophyte-free tall fescue (Festuca arundinacea Schreb.)-white clover (Trifolium repens L.) pasture. Cows were observed for 24 h five times from July 1997 to April 1998, and for 13...

journal_title：Journal of environmental quality

authors： White SL,Sheffield RE,Washburn SP,King LD,Green JT Jr

更新日期：2001-11-01 00:00:00

abstract：:Manure composting is a common management practice for cattle feedlots, but gaseous emissions from composting are poorly understood. The objective of this study was to quantify ammonia (NH3 ), nitrous oxide (N2 O), carbon dioxide (CO2 ), and methane (CH4 ) emissions from windrow composting (turning) and static stockpil...

journal_title：Journal of environmental quality

authors： Bai M,Flesch T,Trouvé R,Coates T,Butterly C,Bhatta B,Hill J,Chen D

更新日期：2020-01-01 00:00:00

abstract：:Chemical immobilization is a relatively inexpensive in situ remediation method that reduces soil contaminant solubility, but the ability of this remediation treatment to reduce heavy metal bioavailability and ecotoxicity to soil invertebrates has not been evaluated. Our objectives were to (i) assess the ability of che...

journal_title：Journal of environmental quality

authors： Conder JM,Lanno RP,Basta NT

更新日期：2001-07-01 00:00:00

abstract：:A biostimulation study was conducted on mining waste residue with nutrient (nitrogen and phosphorus) and/or liming agent (ash or CaCO3 ) amendment to assess petroleum hydrocarbon (PHC) biodegradation efficiency by indigenous microorganisms. Compounds accumulated and/or released by treated samples were also monitored t...

journal_title：Journal of environmental quality

authors： Jugnia LB,Drouin K,Thériault P

更新日期：2020-11-01 00:00:00

abstract：:Anthropogenic nitrate (NO3-) within the Mississippi-Atchafalaya River basin and discharge to the Gulf of Mexico has been linked to serious environmental problems. The sources of this NO3- have been estimated by others using mass balance methods; however, there is considerable uncertainty in these estimates. Part of th...

journal_title：Journal of environmental quality

authors： Panno SV,Hackley KC,Kelly WR,Hwang HH

更新日期：2006-02-02 00:00:00

abstract：:Acidification of mine wastes can lead to a series of environmental problems, such as acid drainage, heavy metal mobilization, and ecosystem degradation. Prediction of acid-forming potential is one of the key steps in management of sulfide-bearing mine wastes. In this paper, the acid-forming potential of 180 mine waste...

journal_title：Journal of environmental quality

authors： Liao B,Huang LN,Ye ZH,Lan CY,Shu WS

更新日期：2007-05-07 00:00:00

abstract：:Herbicides may leach from agricultural fields into ground water feeding adjacent wetlands. However, only little is known of the fate of herbicides in wetland areas. The purpose of the study was to examine the potential of a riparian fen to mineralize herbides that could leach from an adjacent catchment area. Slurries ...

journal_title：Journal of environmental quality

authors： Larsen L,Jørgensen C,Aamand J

更新日期：2001-01-01 00:00:00

abstract：:Livestock impacts on total suspended solids (TSS) and pathogen (e.g., ) levels in rangeland streams are a serious concern worldwide. Herded stream crossings by domestic sheep () are periodic, necessary managerial events on high-elevation rangelands, but their impacts on stream water quality are largely unknown. We eva...

journal_title：Journal of environmental quality

authors： Clark PE,Moffet CA,Lewis GS,Seyfried MS,Hardegree SP,Pierson FB

更新日期：2012-09-01 00:00:00

abstract：:High levels of fecal indicator bacteria (FIB) are the leading cause of surface water quality impairments in the United States. Watershed-scale models are commonly used to identify relative contributions of watershed sources and to evaluate the effectiveness of remediation strategies. However, most existing models simp...

journal_title：Journal of environmental quality

authors： Liao H,Krometis LA,Hession WC,House LL,Kline K,Badgley BD

更新日期：2014-11-01 00:00:00

abstract：:It is necessary to determine the risk of water pollution arising from amendment of organic by-products (OBs) to energy crops under Irish conditions. Therefore, the impact of landspreading two OBs on the quality of groundwater underlying plantations of Miscanthus X giganteus was assessed. Municipal biosolids and distil...

journal_title：Journal of environmental quality

authors： Galbally P,Fagan C,Ryan D,Finnan J,Grant J,McDonnell K

更新日期：2012-01-01 00:00:00

abstract：:Manure application supplies plant nutrients, but also leads to trace element accumulation in soil. This study investigated total and EDTA-extractable B, Cd, Co, Cu and Zn in soil after 25 annual manure applications. The residual effect of 14 annual manure applications followed by 11 yr with no applications was also in...

journal_title：Journal of environmental quality

authors： Benke MB,Indraratne SP,Hao X,Chang C,Goh TB

更新日期：2008-05-02 00:00:00

abstract：:Adding phytase and 25- hydroxycholecalciferol (25-OH D(3)) to broiler diets has been shown effective at reducing total P concentrations in broiler litter. This study was conducted to determine the impact of field application of broiler litter from modified diets on P solubility in litter-amended soils and P losses in ...

journal_title：Journal of environmental quality

authors： McGrath JM,Sims JT,Maguire RO,Saylor WW,Angel R

更新日期：2009-12-30 00:00:00

abstract：:Quantifying and managing diffuse P losses from small catchments or at the farm scale requires detailed knowledge of farming practices and their interaction with catchment processes. However, detailed knowledge may not be available and hence modeling is required. This paper demonstrates two approaches to developing too...

journal_title：Journal of environmental quality

authors： McDowell RW,Nash D,George A,Wang QJ,Duncan R

更新日期：2009-08-24 00:00:00

abstract：:The groundwater of Jeju Island (Republic of Korea) is vulnerable to contamination because its aquifers are mainly composed of highly permeable geological units and its agricultural fields are often exposed to excessive use of predominantly synthetic fertilizers. In the Gosan area of Jeju Island, we investigated nitrat...

journal_title：Journal of environmental quality

authors： Koh EH,Kaown D,Mayer B,Kang BR,Moon HS,Lee KK

更新日期：2012-11-01 00:00:00