کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6341846 1620396 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbon release from Sphagnum peat during thawing in a montane area in China
ترجمه فارسی عنوان
انتشار کربن از ذغال سنگ نارس در طوفان در منطقه مونتن در چین
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علم هواشناسی
چکیده انگلیسی
Soil thawing may affect the turnover of soil organic carbon (C) and the release of C to the atmosphere. Little is known about C release during thawing in the Great Hing'an Mountains, China. Through the incubations, we studied the emissions of CO2 and CH4 during thawing from the Sphagnum moss layer to the permafrost layer under aerobic and anaerobic conditions. Carbon was released quickly during thawing under different conditions. The Sphagnum moss layer produced more CO2 than the other layers. However, there was little CH4 release during thawing in the Sphagnum moss layer and burst of CH4 emissions in the peat and permafrost soils. These bursts include stored CH4 in the frozen samples and productions from microbial activity. The temperature sensitivity during thawing decreased across the freezing point in the Sphagnum moss layer, did not change greatly in the root layer, and increased greatly in the peat and permafrost layers. Changes in soil substrates and enzyme activities may affect C release during thawing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Atmospheric Environment - Volume 75, August 2013, Pages 77-82
نویسندگان
, , , , , ,