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Carbon accumulation rates recorded in the last 150years in tropical high mountain peatlands of the Atlantic Rainforest, SE - Brazil

Author:
Lourençato, Lúcio F., Caldeira, Pedro P., Bernardes, Marcelo C., Buch, Andressa C., Teixeira, Daniel C., Silva-Filho, Emmanoel V.
Source:
The Science of the total environment 2017 v.579 pp. 439-446
ISSN:
0048-9697
Subject:
Haplosaprists, carbon, climatic factors, hydrologic cycle, national parks, peatlands, rain forests, topography, Brazil
Abstract:
Peatlands are environmental matrices that store large amounts of organic carbon (TOC) and work as records of environmental changes. Recent record of organic carbon accumulated were assessed in two Forest National Parks, Itatiaia and Serra dos Órgãos in the Southeastern of Brazil. Based on organic and inorganic characterization, the cores from peatlands presented a predominance of organic material in an advanced stage of decomposition and those soils were classified as typical Haplosaprists Histosols. The combination of favorable topographic and climatic conditions led to rapid C accumulation across coastal mountain in the tropical peatlands studied, presenting an average accumulation rate of C, in the last century, of 194gCm−2yr−1 about 7 higher times than the rate found in boreal and subarctic peatlands, those higher values may be related to changes in the hydrological cycle occurred since 1950s.
Agid:
5602992