Organic carbon density and storage of the major black soil regions in Northeast China

Black soils in the Northeast Plain of China are characterized by high organic carbon (C) density and storage, which can influence C sequestration in local cropland ecosystems. Using GIS, this study analyzed the temporal and spatial distribution and variation of cropland organic C density and storage...

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Autores principales:	Li,H, Pei,J.B, Wang,J.K, Li,S.Y, Gao,G.W
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	Black soil organic carbon density and storage arable layer Northeast China
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400010
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spelling	oai:scielo:S0718-951620130004000102014-01-29Organic carbon density and storage of the major black soil regions in Northeast ChinaLi,HPei,J.BWang,J.KLi,S.YGao,G.W Black soil organic carbon density and storage arable layer Northeast China Black soils in the Northeast Plain of China are characterized by high organic carbon (C) density and storage, which can influence C sequestration in local cropland ecosystems. Using GIS, this study analyzed the temporal and spatial distribution and variation of cropland organic C density and storage in the arable layer (0-20 cm) of the major black soil regions in China's Northeast Plain (specifically across the study region of Hailun, Shuangcheng and Gongzhuling counties) over the past 30 years. The results indicate an overall downward trend in soil organic C (SOC) density (SOCd, mean decrease of 0.64 kg m-2) and storage (SOCs, decrease of 4.65 Tg )*1 for the major black soil regions tested during the study period. The mean decrease in SOCd for Hailun, Shuangcheng and Gongzhuling counties was 0.68 kg m-2, 0.18 kg m-2 and 1.05 kg m-2, respectively, with total SOC decreases of 2.30 Tg, 0.49 Tg and 1.86 Tg, respectively. SOCd decreased to a greater extent during the first twenty years in Hailun and Shuangcheng relative to Gongzhuling. Moreover, SOCd tended to stabilize and then slightly increase during the last ten years. There was a downward trend in SOCd and SOCs over the past 30 years for almost all soil types, but the most serious decline in SOCs was observed in black soils, which account for 57.92% of the cropland soil area in all study regions and which lost up to 2.91 Tg of SOC. Therefore, the major black soil region in Northeast China was presenting a C resource trend over the past 20-30 years.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400010en10.4067/S0718-95162013005000070
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Black soil organic carbon density and storage arable layer Northeast China
spellingShingle	Black soil organic carbon density and storage arable layer Northeast China Li,H Pei,J.B Wang,J.K Li,S.Y Gao,G.W Organic carbon density and storage of the major black soil regions in Northeast China
description	Black soils in the Northeast Plain of China are characterized by high organic carbon (C) density and storage, which can influence C sequestration in local cropland ecosystems. Using GIS, this study analyzed the temporal and spatial distribution and variation of cropland organic C density and storage in the arable layer (0-20 cm) of the major black soil regions in China's Northeast Plain (specifically across the study region of Hailun, Shuangcheng and Gongzhuling counties) over the past 30 years. The results indicate an overall downward trend in soil organic C (SOC) density (SOCd, mean decrease of 0.64 kg m-2) and storage (SOCs, decrease of 4.65 Tg )*1 for the major black soil regions tested during the study period. The mean decrease in SOCd for Hailun, Shuangcheng and Gongzhuling counties was 0.68 kg m-2, 0.18 kg m-2 and 1.05 kg m-2, respectively, with total SOC decreases of 2.30 Tg, 0.49 Tg and 1.86 Tg, respectively. SOCd decreased to a greater extent during the first twenty years in Hailun and Shuangcheng relative to Gongzhuling. Moreover, SOCd tended to stabilize and then slightly increase during the last ten years. There was a downward trend in SOCd and SOCs over the past 30 years for almost all soil types, but the most serious decline in SOCs was observed in black soils, which account for 57.92% of the cropland soil area in all study regions and which lost up to 2.91 Tg of SOC. Therefore, the major black soil region in Northeast China was presenting a C resource trend over the past 20-30 years.
author	Li,H Pei,J.B Wang,J.K Li,S.Y Gao,G.W
author_facet	Li,H Pei,J.B Wang,J.K Li,S.Y Gao,G.W
author_sort	Li,H
title	Organic carbon density and storage of the major black soil regions in Northeast China
title_short	Organic carbon density and storage of the major black soil regions in Northeast China
title_full	Organic carbon density and storage of the major black soil regions in Northeast China
title_fullStr	Organic carbon density and storage of the major black soil regions in Northeast China
title_full_unstemmed	Organic carbon density and storage of the major black soil regions in Northeast China
title_sort	organic carbon density and storage of the major black soil regions in northeast china
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000400010
work_keys_str_mv	AT lih organiccarbondensityandstorageofthemajorblacksoilregionsinnortheastchina AT peijb organiccarbondensityandstorageofthemajorblacksoilregionsinnortheastchina AT wangjk organiccarbondensityandstorageofthemajorblacksoilregionsinnortheastchina AT lisy organiccarbondensityandstorageofthemajorblacksoilregionsinnortheastchina AT gaogw organiccarbondensityandstorageofthemajorblacksoilregionsinnortheastchina
_version_	1714206464306839552

Organic carbon density and storage of the major black soil regions in Northeast China

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