کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
6458931 1421197 2017 3 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
A solvent-based extraction fails to remove mobile nitrogen from western redcedar (Thuja plicata)
ترجمه فارسی عنوان
شکست استخراج بر اساس حلال برای حذف نیتروژن متحرک از redcedar غرب (Thuja plicata)
کلمات کلیدی
سنگ سوخته؛ ایزوتوپ پایدار؛ نیتروژن حاصل از دریایی؛ چرخه مواد مغذی؛
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
چکیده انگلیسی

The ability to accurately measure interannual variability of the stable isotope of nitrogen, 15N, in tree rings could greatly improve understanding of marine-derived nitrogen delivery to terrestrial ecosystems, soil nitrogen dynamics, and the influences of climate on nitrogen cycles. It could also provide a tool for reconstructing past salmon abundances. However, the mobility of nitrogen throughout the entire tree including between rings has confounded attempts to make full use of 15N in dendrochemistry. We report that despite solvent-based extraction pretreatment to remove nonstructural, mobile nitrogen from increment core samples, an elevated 15N signal is detected in rings formed up to about ten years prior to application of a 15N-enriched tracer in four western redcedar trees. We conclude that the interpretation of the heavy nitrogen signal in tree rings via this pretreatment extraction method is confounded. These findings corroborate work already done in the field.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dendrochronologia - Volume 44, June 2017, Pages 19-21
نویسندگان
, , , , , ,