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(Article of periodic en Anglais - 2014)

Document title

Climatic and topographic controls on soil organic matter storage and dynamics in the Indian Himalaya : Potential carbon cycle–climate change feedbacks

Authors(s) and Affiliation(s)

LONGBOTTOM T.L. (1 2) ; TOWNSEND-SMALL A. (1 3) ; OWEN L.A. (1) ; MURARI M.K. (1) ;
(1) Dept. of Geology, Univ., Cincinnati, ETATS-UNIS
(2) Dept. of Geology, Baylor Univ., Waco, ETATS-UNIS
(3) Dept. of Geography, Univ., Cincinnati, ETATS-UNIS

Abstract

To evaluate the importance of C storage in soils in high mountain regions, regional soil organic carbon (SOC) abundance was examined across the Himalaya of northern India. Soil samples were collected from the Kulu Lesser Himalaya, Lahul Himalaya, and Zanskar along an altitudinal and precipitation gradient, and analyzed for SOC inventory as well as Δ14C and δ13C. The results show that SOC stocks in the Indian Himalaya are more sensitive to moisture availability than temperature, as average annual precipitation was a greater influence on SOC than altitude. Stable carbon isotope data indicate that C3 vegetation has been consistently dominant in the region for the last ~ 7000 years. Rates of SOC accumulation and turnover are influenced greatly by variations in climate, vegetation, and topography. We conclude that increased precipitation may lead to increased SOC storage in the region, unless soils are exposed to greater erosion rates during intense storms

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2014, no119 [pp. 125-135]

Bibliographic references : 2 p.

Collation : 8 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2014.03.002

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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