Reference health
First detection of nitrogen from NOx in tree rings: a 15N/14N study near a motorway
32/32 checkable references clean · checked 2026-07-23
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
2 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 32 checked references that resolve
resolves10.1007/s004420050710
Estimating the uptake of traffic-derived NO 2 from 15 N abundance in Norway spruce needles
resolves10.1016/S0269-7491(00)00219-0
Response of mycorrhizal Norway spruce seedlings to various nitrogen loads and sources
resolves10.1051/forest:2003043
Inter-annual mobility of nitrogen between beech rings:
a labelling experiment
resolves10.1016/S1360-1385(01)01889-1
Physiological mechanisms influencing plant nitrogen isotope composition
resolves10.1034/j.1600-0889.1991.00003.x
Seasonal variation of 15N/14N ratios in atmospheric nitrate species
resolves10.1080/1025601031000102206
Potential for assessing long-term dynamics in soil nitrogen availability from variations in <i>δ</i> <sup>15</sup>N of tree rings
resolves10.1016/0168-9622(86)90059-X
Isotopic studies of nitrogen pollution in the hydrosphere and atmosphere: A review
resolves10.1046/j.1469-8137.1997.00808.x
Tansley Review No. 95<sup>15</sup>N natural abundance in soil‐plant systems
resolves10.1016/S0269-7491(97)00053-5
Anthropogenic impacts on natural nitrogen isotope variations in Pinus sylvestris stands in an industrially polluted area
resolves10.1016/0016-7037(58)90033-4
The concentration and isotopic abundances of atmospheric carbon dioxide in rural areas
resolves10.1046/j.0022-0477.2001.00600.x
Nitrogen deposition and forest expansion in the northern Great Plains
resolves10.1007/BF02182953
The fate of15N enriched throughfall in two coniferous forest stands at different nitrogen deposition levels
resolves10.1016/S1352-2310(00)00337-X
Evaluation of the CAR-FMI model against measurements near a major road
resolves10.1051/forest:19960246
Element analysis of tree rings in pedunculate oak heartwood: an indicator of historical trends in the soil chemistry, related to atmospheric deposition
resolves10.1051/forest:2002059
Mineral nutrient concentrations in sapwood and heartwood: a literature review
resolves10.1139/b66-168
ROLE OF NITROGEN IN WOOD DETERIORATION: AMOUNTS AND DISTRIBUTION OF NITROGEN IN TREE STEMS
resolves10.1046/j.1469-8137.2000.00702.x
Traffic exposure increases natural <sup>15</sup>N and heavy metal concentrations in mosses
resolves10.1007/s004420050059
Trends in plant carbon concentration and plant demand for N throughout this century
resolves10.1016/0009-2541(95)00097-6
Nitrogen isotope variation of tree rings as a potential indicator of environmental change
resolves10.1023/A:1005206927764
Simulation of Increased Nitrogen Deposition to a Montane Forest Ecosystem: Partitioning of the Added 15N
resolves10.1126/science.244.4906.776
Air Pollution and Forest Decline in a Spruce (
<i>Picea abies</i>
) Forest
resolves10.2134/jeq2000.00472425002900060042x
Effect of Extraction Pretreatment on Radial Variation of Nitrogen Concentration in Tree Rings
resolves10.1046/j.1469-8137.2001.00032.x
Stable isotope analysis reveals differential effects of soil nitrogen and nitrogen dioxide on the water use efficiency in hybrid poplar leaves
resolves10.1007/s00442-002-0906-8
Impact of point source pollution on nitrogen isotope signatures (δ15N) of vegetation in SE Brazil
resolves10.1023/A:1005853429853
Measurement of Atmospheric Deposition Under Forest Canopies: Some Recommendations for Equipment and Sampling Design
resolves10.1016/S0269-7491(98)80065-1
Nitrogen saturation experiments (NITREX) in coniferous forest ecosystems in Europe: a summary of results
resolves10.1111/j.1469-8137.1990.tb00467.x
Tansley Review No. 24 Why are atmospheric oxides of nitrogen usually phytotoxic and not alternative fertilizers?
The 2 references without a DOI — listed, not checked
no DOI — not checkedBUWAL, 1995. Vom Menschen verursachte Luftschadstoff-Emissionen in der Schweiz von 1900 bis 2010. Schriftenreihe Umwelt Nr. 256, Bern, 420pp.
no DOI — not checkedPollution studies using stable isotopes
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