Abstract：
:The Universal Soil Loss Equation (USLE) and its derivatives are widely used for identifying watersheds with a high potential for degrading stream water quality. We compared sediment yields estimated from regional application of the USLE, the automated revised RUSLE2, and five sediment delivery ratio algorithms to measured annual average sediment delivery in 78 catchments of the Chesapeake Bay watershed. We did the same comparisons for another 23 catchments monitored by the USGS. Predictions exceeded observed sediment yields by more than 100% and were highly correlated with USLE erosion predictions (Pearson r range, 0.73-0.92; p < 0.001). RUSLE2-erosion estimates were highly correlated with USLE estimates (r = 0.87; p < 001), so the method of implementing the USLE model did not change the results. In ranked comparisons between observed and predicted sediment yields, the models failed to identify catchments with higher yields (r range, -0.28-0.00; p > 0.14). In a multiple regression analysis, soil erodibility, log (stream flow), basin shape (topographic relief ratio), the square-root transformed proportion of forest, and occurrence in the Appalachian Plateau province explained 55% of the observed variance in measured suspended sediment loads, but the model performed poorly (r(2) = 0.06) at predicting loads in the 23 USGS watersheds not used in fitting the model. The use of USLE or multiple regression models to predict sediment yields is not advisable despite their present widespread application. Integrated watershed models based on the USLE may also be unsuitable for making management decisions.
journal_name
J Environ Qualjournal_title
Journal of environmental qualityauthors
Boomer KB,Weller DE,Jordan TEdoi
10.2134/jeq2007.0094subject
Has Abstractpub_date
2008-01-04 00:00:00pages
79-89issue
1eissn
0047-2425issn
1537-2537pii
37/1/79journal_volume
37pub_type
杂志文章abstract：:The interaction of sulfonamide antimicrobial agents with smectite clay minerals and humic acid (HA)-clay complexes was investigated in batch experiments to assess the influence of adsorbed humic acid on sulfonamide sorption. Soil HA-clay complexes were produced at HA:clay ratios of 1:5, 1:50, and 1:100 (w/w). Vibratio...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0274
更新日期：2009-12-30 00:00:00
abstract：:A field study was initiated to determine survival, growth characteristics, and metal uptake of two montane riparian willow species, Geyer (Salix geyeriana Andersson) and mountain (S. monticola Bebb) willow, grown in amended fluvial mine tailing deposits. Revegetation was done with staked and previously rooted cuttings...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0153
更新日期：2009-02-25 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
pub_type： 杂志文章
doi：10.2134/jeq2005.0035
更新日期：2006-01-03 00:00:00
abstract：:Poultry litter treatment with alum (Al(2)(SO(4))(3) . 18H(2)O) lowers litter phosphorus (P) solubility and therefore can lower litter P release to runoff after land application. Lower P solubility in litter is generally attributed to aluminum-phosphate complex formation. However, recent studies suggest that alum addit...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2007.0239
更新日期：2008-02-11 00:00:00
abstract：:Most farms have a centralized location to fill spray tanks with pesticides and to flush and clean application equipment. These sites, depending on the frequency of use, could be significant sources of surface and groundwater contamination. One approach to minimize this contamination is to install a treatment system, s...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2016.04.0124
更新日期：2018-03-01 00:00:00
abstract：:Contamination of unfenced streams with P, sediments, and pathogenic bacteria from cattle (Bos taurus) activity may be affected by the availability of shade and alternative water sources. The objectives of this study were to evaluate water quality in two streams draining tall fescue (Festuca arundinacea Schreb.)-common...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.0335
更新日期：2005-11-07 00:00:00
abstract：:Laboratory microcosm experiments were used to assess the effects of environmental parameters on the persistence of the Bacteroides 16S rRNA genes derived from equine fecal samples in stream water to investigate the utility of Bacteroides spp. as fecal indicator organisms. Quantitative real-time polymerase chain reacti...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0258
更新日期：2009-04-27 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
pub_type： 杂志文章
doi：10.2134/jeq2004.0454
更新日期：2005-08-09 00:00:00
abstract：:Reactions of heavy metals with soil are important in determining metal fates in the environment. Sorption characteristics of two heavy metals, Cd and Pb, in three tropical soils (Mollisol, Oxisol, and Ultisol) from Puerto Rico were assessed at varying metal concentrations (0 to 1.2 mM) and pH values (approximately 2 t...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：
更新日期：2002-03-01 00:00:00
abstract：:Sulfur received extensive study as an input to terrestrial ecosystems from acidic deposition during the 1980s. With declining S deposition inputs across the eastern United States, there have been many studies evaluating ecosystem response, with the exception of agricultural watersheds. We used long-term (22 and 18 yr)...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2015.12.0613
更新日期：2016-07-01 00:00:00
abstract：:Land use and land cover (LULC) play a central role in fate and transport of water quality (WQ) parameters in watersheds. Developing relationships between LULC and WQ parameters is essential for evaluating the quality of water resources. In this paper, we present an artificial neural network (ANN)-based methodology to ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2009.0441
更新日期：2010-07-01 00:00:00
abstract：:Experiments to document the long-term effects of clipping management on N requirements, soil organic carbon (SOC), and soil organic nitrogen (SON) are difficult and costly and therefore few. The CENTURY ecosystem model offers an opportunity to study long-term effects of turfgrass clipping management on biomass product...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2003.1694
更新日期：2003-09-01 00:00:00
abstract：:High levels of fecal bacteria are a concern for recreational waters; however, the source of contamination is often unknown. This study investigated whether direct sequencing of a bacterial gene could be utilized for detecting genetic differences between bacterial strains for microbial source tracking. A 525-nucleotide...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.1024
更新日期：2004-05-01 00:00:00
abstract：:Terbuthylazine (TA) is a herbicide that has been introduced for weed control in corn cultivations as a direct replacement for atrazine. Because incorporation of different organic amendments (OAs) is a common practice in this crop, this study investigated the effects of different OAs, including urban sewage sludge, pou...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2008.0162
更新日期：2009-02-25 00:00:00
abstract：:Animal manure contains partially digested feed fiber and grains where phosphorus (P) is bound in organic compounds that include myo-inositol 1,2,3,5/4,6-hexakis dihydrogenphosphate or phytic acid (IP6). Information is needed on the effects of other (non-IP6) organic ligands (LIGND) on the enzymatic dephosphorylation o...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:Increasing chloride (Cl) concentration in soil solution has been shown to increase cadmium (Cd) concentration in soil solution and Cd uptake by plants, when grown in phosphate fertilizer- or biosolid-amended soils. However, previous experiments did not distinguish between the effect of Cl on biosolid-borne Cd compared...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.4960
更新日期：2004-03-01 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
pub_type： 杂志文章
doi：10.2134/jeq2015.02.0078
更新日期：2015-03-01 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
pub_type： 杂志文章
doi：10.2134/jeq2001.3041231x
更新日期：2001-07-01 00:00:00
abstract：:Soils support ecosystem functions such as plant growth and water quality because of certain physical, chemical, and biological properties. These properties have been studied at different spatial scales, including point scales to satisfy basic research needs, and regional scales to satisfy monitoring needs. Recently, s...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.301101x
更新日期：2001-01-01 00:00:00
abstract：:Long-term monitoring data from agricultural watersheds are needed to determine if efforts to reduce nutrient transport from crop and pasture land have been effective. Goodwater Creek Experimental Watershed (GCEW), located in northeastern Missouri, is a high-runoff-potential watershed dominated by claypan soils. The ob...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2014.02.0059
更新日期：2015-01-01 00:00:00
abstract：:Environmental assessments of golf courses and other turf systems must often rely on mathematical modeling. However, in the case of pesticide runoff, successful modeling applications are rare. Available models were developed for agricultural applications and have seen very limited testing for turf. TurfPQ is a pesticid...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.3031033x
更新日期：2001-05-01 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
pub_type： 杂志文章
doi：10.2134/jeq2016.07.0252
更新日期：2017-01-01 00:00:00
abstract：:Treatment of liquid swine manure (LSM) offers opportunities to improve manure nutrient management. However, N2O fluxes and cumulative emissions resulting from application of treated LSM are not well documented. Nitrous oxide emissions were monitored following band-incorporation of 100 kg N ha(-1) of either mineral fer...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2009.0482
更新日期：2010-09-01 00:00:00
abstract：:The water quality response to implementation of conservation measures across watersheds has been slower and smaller than expected. This has led many to question the efficacy of these measures and to call for stricter land and nutrient management strategies. In many cases, this limited response has been due to the lega...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2013.03.0098
更新日期：2013-09-01 00:00:00
abstract：:Three promising phytoextracting perennial weed species [ L. (ox-eye daisy), L. (curly dock), and L. (Canada goldenrod)] were planted in monoculture plots at two polychlorinated biphenyl (PCB)-contaminated sites in southern Ontario and followed over 2 yr to investigate the effects of plant age, contaminant characteri...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2011.0144
更新日期：2011-11-01 00:00:00
abstract：:Although many studies have pointed out the various controlling factors of sediment and nutrient delivery on a plot or watershed scale, little is known on the spatial variability of sediment and nutrient delivery on a regional scale. This study was conducted to reveal regional variations in sediment-associated nutrient...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2002.8700
更新日期：2002-05-01 00:00:00
abstract：:Water resources protection from nitrate nitrogen (NO3-N) contamination is an important public concern and a major national environmental issue. The abilities of the SOIL-SOILN model to simulate water drainage and nitrate N fluxes from orchardgrass (Dactylis glomerata L.) were evaluated using data from a 3-yr field exp...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2001.302584x
更新日期：2001-03-01 00:00:00
abstract：:Because organic sorption in soil may never reach equilibrium, a thin-disc flow nonequilibrium method may be helpful in understanding herbicide-soil interactions. This research was conducted to (i) determine the influence of incubation time on imazaquin [2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl)...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.5810
更新日期：2004-03-01 00:00:00
abstract：:Polyacrylamide (PAM) is applied to 400000 irrigated hectares annually in the USA to control irrigation-induced erosion, yet the fate of dissolved PAM applied in irrigation water is not well documented. We determined the fate of PAM added to furrow streams under two treatments: Initial-10, 10 mg L(-1) PAM product appli...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：
更新日期：2002-03-01 00:00:00
abstract：:Erythromycin has been widely used in food-producing animals and in humans, and is frequently detected as an organic pollutant in U.S. streams. In batch experiments with homoionic clays, the Freundlich isotherms were determined at 10 and 25 degrees C. The adsorption of erythromycin A was strongly influenced by clay typ...
journal_title：Journal of environmental quality
pub_type： 杂志文章
doi：10.2134/jeq2004.2570
更新日期：2004-01-01 00:00:00
