The influence of atmospheric nitrogen influx upon the stream nitrogen profile of a relatively undisturbed forested watershed

Nuckols, John R.; Moore, Ian D.

doi:10.1016/0022-1694(82)90107-x

Cited by 5 publications

(1 citation statement)

References 14 publications

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“…The studies done by Nuckols and Moore for the West Fork Walker Branch (Nuckols and Moore, 1982) and the Little Millseat (Moore and Nuckols, 1984) Watersheds in Tennessee and Kentucky, respectively, represent perhaps the most thorough attempt to model stream nutrients and use the models as inference tools. Integrated composite samples were analyzed weekly for nitrate, ammonium, and organic nitrogen for a period of 217 and 230 days for the West Fork Walker Branch and Little Miliseat, respectively.…”

Section: Background Literaturementioning

confidence: 99%

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON¹

Bakke¹,

Pyles

1997

J American Water Resour Assoc

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Predictive models for nitrate in four streams in the Bull Run Watershed in the Cascade Mountains of Oregon were developed from a record of 17 years of nitrate samples. The models are time series regression models written in terms of Log(nitrate load). The independent variables are logarithm of 14‐day mean daily stream discharge, current day's precipitation, logarithm of the previous day's precipitation, total precipitation for the previous seven days, a hydrograph position variable that indicates rising or falling limb, and average maximum air temperature for the preceding 14 days. The models describe annual cycle and seasonable trends and variations in nitrate load, but are unable to describe large day to day variations like those associated with hydrograph peaks.

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Section: Background Literaturementioning

confidence: 99%

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON¹

Bakke¹,

Pyles

1997

J American Water Resour Assoc

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Wet atmospheric deposition of nitrogen: 20 years measurement in Shenzhen City, China

Huang

Chen

2012

Environ Monit Assess

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We presented measurements of wet deposition of NH(4)(+)-N and NO(3)(-)-N from 1986 to 2006 in Shenzhen City, China. Over the past 20 years, NO(3)(-)-N concentration had significantly increased, but a reverse trend was found for NH(4)(+)-N. The main form of total inorganic nitrogen (TIN) was NH(4)(+)-N and the average NH(4)(+)-N/NO(3)(-)-N ratio was 1.57 in this area. The contribution of NO(3)(-)-N to TIN increased from 28-42% in the period of 1986-2000 to 50-63% during 2001-2006. The increased deposition flux of NO(3)(-)-N resulted in the increasing trend of TIN, although NH(4)(+)-N showed a decreasing trend over time. Average deposition flux of TIN during 1986-2006 was 13.24 kg/ha/year, with a minimum value of 6.03kg/ha/year in 1988 and a maximum value of 20.52 kg/ha/year in 1997. Wet deposition fluxes of N appeared to vary with season, 81% occurred in the warm season (from April to September). The wet deposition of TIN to the Shenzhen Reservoir reached 8,902 kg in 2006, which contributed 9.95% of the total nonpoint pollution to the reservoir and will be increased in the future.

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Relationship between atmospheric nitrogen deposition and the stream nitrogen profile

Moore

Nuckols

1984

Journal of Hydrology

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The influence of atmospheric nitrogen influx upon the stream nitrogen profile of a relatively undisturbed forested watershed

Cited by 5 publications

References 14 publications

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON¹

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON¹

Wet atmospheric deposition of nitrogen: 20 years measurement in Shenzhen City, China

Relationship between atmospheric nitrogen deposition and the stream nitrogen profile

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The influence of atmospheric nitrogen influx upon the stream nitrogen profile of a relatively undisturbed forested watershed

Cited by 5 publications

References 14 publications

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON1

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON1

Wet atmospheric deposition of nitrogen: 20 years measurement in Shenzhen City, China

Relationship between atmospheric nitrogen deposition and the stream nitrogen profile

Contact Info

Product

Resources

About

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON¹

PREDICTIVE MODEL FOR NITRATE LOAD IN THE BULL RUN WATERSHED, OREGON¹