A Method of Estimating Income of Nutrients in a Catch of Airborne Particles by a Woodland Canopy

White, E. J.; Turner, Fred

doi:10.2307/2401970

Cited by 110 publications

(33 citation statements)

References 21 publications

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“…The studies showed that for Populus, when the wind speed is 3 m·s . Due to this study taking place in the same experimental area as that of Sun et al [57], we regard the deposition velocity of PM2.5 in this study as 0.9 ± 0.8 cm·s [55,58]; here we also adopted this value. With an increase in the particle size range of 0.1-10 μm, aerosol deposition velocities are greater [58].…”

Section: Urban Forest Effects Model: Air Particulate Removed By Treesmentioning

confidence: 99%

The Concentrations and Reduction of Airborne Particulate Matter (PM10, PM2.5, PM1) at Shelterbelt Site in Beijing

Chen

Sun

et al. 2015

Atmosphere

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Particulate matter is a serious source of air pollution in urban areas, where it exerts adverse effects on human health. This article focuses on the study of subduction of shelterbelts for atmospheric particulates. The results suggest that (1) the PM mass concentration is higher in the morning or both morning and noon inside the shelterbelts and lower mass concentrations at other times; (2) the particle mass concentration inside shelterbelt is higher than outside; (3) the particle interception efficiency of the two forest belts over the three months in descending order was PM10 > PM1 > PM2.5; and (4) the two shelterbelts captured air pollutants at rates of 1496.285 and 909.075 kg/month and the major atmospheric pollutant in Beijing city is PM10. Future research directions are to study PM mass concentration variation of shelterbelt with different tree species and different configuration.

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Section: Urban Forest Effects Model: Air Particulate Removed By Treesmentioning

confidence: 99%

The Concentrations and Reduction of Airborne Particulate Matter (PM10, PM2.5, PM1) at Shelterbelt Site in Beijing

Chen

Sun

et al. 2015

Atmosphere

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“…Dust transport is strongly affected by individual meteorological events, leading to very high spatial and temporal variability in both transport and deposition. Atmospheric deposition collectors cannot accurately measure meaningful long-term averages of total dust deposition in a forest (Hicks et al 1980;Lindberg and Lovett 1985;Miller and Miler 1980;Stoorvogel et al 1997;White and Turner 1970). Deposition collectors lack the surface area of the forest canopy to entrain dust and aerosols and typically do not account for spatial variability (Bruijnzeel 1989;and Bruijnzeel 1991).…”

Section: Introductionmentioning

confidence: 99%

Contributions of dust to phosphorus cycling in tropical forests of the Luquillo Mountains, Puerto Rico

Pett-Ridge

2009

Biogeochemistry

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The input of phosphorus (P) through mineral aerosol dust deposition may be an important component of nutrient dynamics in tropical forest ecosystems. A new dust deposition calculation is used to construct a broad analysis of the importance of dust-derived P to the P budget of a montane wet tropical forest in the Luquillo Mountains of Puerto Rico. The dust deposition calculation used here takes advantage of an internal geochemical signal (Sr isotope mass balance) to provide a spatially integrated longer-term average dust deposition flux. Dust inputs of P (0.23 ± 0.08 kg ha -1 year -1 ) are compared with watershed-average inputs of P to the soil through the conversion of underlying saprolite into soil (between 0.07 and 0.19 kg ha -1 year -1 ), and with watershed-average losses of soil P through leaching (between 0.02 and 0.14 kg ha -1 year -1 ) and erosion (between 0.04 and 1.38 kg ha -1 year -1 ). The similar magnitude of dust-derived P inputs to that of other fluxes indicates that dust is an important component of the soil and biomass P budget in this ecosystem. Dust-derived inputs of P alone are capable of completely replacing the total soil and biomass P pool on a timescale of between 2.8 ka and 7.0 ka, less than both the average soil residence time (*15 ka) and the average landslide recurrence interval (*10 ka).

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“…These methods are limited by multiple issues, including the high spatial 87 and temporal variability in both transport and deposition (Prospero, 1999). Direct collection of 88 dust using ground-based deposition collectors cannot meaningfully measure the long-term 89 average dust deposition in forested ecosystems, in part because they do not mimic the forest 90 canopy structure and surface properties of leaves (Hicks et al, 1980;Lindberg and Lovett, 1985;91 Stoorvogel et al, 1997; White and Turner, 1970). Modern deposition studies typically rely on 92 only a few years of data and are thus subject to timescale biases (Pelletier, 2007).…”

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Spatial variability of African dust in soils in a montane tropical landscape in Puerto Rico

et al. 2015

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Dust deposition provides rock-derived nutrients such as phosphorus (P) to terrestrial ecosystems. Over pedogenic timescales, as bedrock sources of P are depleted, dust sources of P may support productivity in certain ecosystems, but controls on the spatial variability of dust in montane forested systems are largely unknown. Here, we use neodymium (Nd) isotope ratios in 31 ridgetop surface soils to evaluate the spatial variability of dust contributions to soil across ~100 km2 in the Luquillo Mountains, Puerto Rico. Dust from the Sahara-Sahel region of Africa carries a distinct isotopic signature of -12 εNd. Local bedrock, in contrast, has a εNd value of +7. End-member mixing calculations based on εNd reveal a wide range in dust influence on surface soils, with between 0% and 92% of the top 20 cm of ridgetop soil Nd derived from African dust. Using εNd paired with both dust and soil Nd content, the current soil dust content was calculated, ranging from 0 to 8.0%. There were no correlations between current dust content of soil and 10Be-based denudation rate, elevation, rainfall, longitude, or forest type. Current soil dust content is significantly higher in soils developed on volcaniclastic sandstone, breccia and mudstone than in soils developed on quartz diorite bedrock, which we attribute to greater retention capacity in the volcaniclastic soils. Current soil dust content also increases with increasing ridge-width, implying that small-scale topographic effects and other factors such as wind speed and turbulence influence local dust deposition rates. Higher current dust content of soil is also positively correlated with biologically cycled fractions of soil P on quartz diorite bedrock (r2=0.24 and p=0.002 for sum of extractable NaHCO3-P + NaOH-P), suggesting that atmospheric dust inputs contribute to the fertility of Luquillo Mountain ecosystems. February 28, 2015To:Editor in Chief Chemical GeologyRe: Manuscript submission Dear Editors, Please find attached our manuscript: "Spatial variability of African dust in a montane tropical landscape in Puerto Rico", which we are submitting for publication in Chemical Geology.In this paper we explore the spatial variability of dust in the wet forested Luquillo Mountains of northeastern Puerto Rico. Dust inputs represent a significant influence on soil chemistry, ecosystem nutrient supply, and dissolved watershed solute fluxes. Little is known about the controls on spatial variability of dust deposition, especially when dry deposition is a major fraction of total deposition, as is the case in Puerto Rico.We use neodymium isotopes in surface soils to quantify African dust in Luquillo Mountain soils. We believe we have an especially robust situation for this tracer that allows for simple two end-member mixing calculations. Our choice to use surface soil provides an integrated look at dust inputs over hundred to thousand year timescales, which are relevant to the nutrient capital of the ecosystem. Our results highlight that dust input fluxes are highly spatially varia...

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A Method of Estimating Income of Nutrients in a Catch of Airborne Particles by a Woodland Canopy

Cited by 110 publications

References 21 publications

The Concentrations and Reduction of Airborne Particulate Matter (PM10, PM2.5, PM1) at Shelterbelt Site in Beijing

The Concentrations and Reduction of Airborne Particulate Matter (PM10, PM2.5, PM1) at Shelterbelt Site in Beijing

Contributions of dust to phosphorus cycling in tropical forests of the Luquillo Mountains, Puerto Rico

Spatial variability of African dust in soils in a montane tropical landscape in Puerto Rico

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