effectsoflanduseandcultivationtimeonsoilorganicandinorganiccarbonstorageindeepsoils

doi:10.1007/s11442-020-1762-3

IEECAS OpenIR > 加速器质谱中心

	effectsoflanduseandcultivationtimeonsoilorganicandinorganiccarbonstorageindeepsoils
	Yu Xia; Zhou Weijian; Wang Yunqiang; Cheng Peng; Hou Yaoyao; Xiong Xiaohu; Du Hua; Yang Ling; Wang Ya
	2020
发表期刊	journalofgeographicalsciences
ISSN	1009-637X
卷号	30 期号:6 页码:921-934
摘要	The vertical distribution and exchange mechanisms of soil organic and inorganic carbon (SOC, SIC) play an important role in assessing carbon (C) cycling and budgets. However, the impact of land use through time for deep soil C (below 100 cm) is not well known. To investigate deep C storage under different land uses and evaluate how it changes with time, we collected soil samples to a depth of 500 cm in a soil profile in the Gutun watershed on the Chinese Loess Plateau (CLP); and determined SOC, SIC, and bulk density. The magnitude of SOC stocks in the 0-500 cm depth range fell into the following ranking: shrubland (17.2 kg m~(-2)) > grassland (16.3 kg m~(-2)) > forestland (15.2 kg m~(-2)) > cropland (14.1 kg m~(-2)) > gully land (6.4 kg m~(-2)). The ranking for SIC stocks were: grassland (104.1 kg m~(-2)) > forestland (96.2 kg m~(-2)) > shrubland (90.6 kg m~(-2)) > cropland (82.4 kg m~(-2)) > gully land (50.3 kg m~(-2)). Respective SOC and SIC stocks were at least 1.6-and 2.1-fold higher within the 100-500 cm depth range, as compared to the 0-100 cm depth range. Overall SOC and SIC stocks decreased significantly from the 5th to the 15th year of cultivation in croplands, and generally increased up to the 70th year. Both SOC and SIC stocks showed a turning point at 15 years cultivation, which should be considered when evaluating soil C sequestration. Estimates of C stocks greatly depends on soil sampling depth, and understanding the influences of land use and time will improve soil productivity and conservation in regions with deep soils.
关键词	cultivation time deep soil Gutun watershed land use inorganic carbon organic carbon
DOI	10.1007/s11442-020-1762-3
收录类别	CSCD
语种	英语
CSCD记录号	CSCD:6728902
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录] 被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14954
专题	加速器质谱中心
作者单位	中国科学院地球环境研究所
第一作者单位	中国科学院地球环境研究所
推荐引用方式 GB/T 7714	Yu Xia,Zhou Weijian,Wang Yunqiang,et al. effectsoflanduseandcultivationtimeonsoilorganicandinorganiccarbonstorageindeepsoils[J]. journalofgeographicalsciences,2020,30(6):921-934.
APA	Yu Xia.,Zhou Weijian.,Wang Yunqiang.,Cheng Peng.,Hou Yaoyao.,...&Wang Ya.(2020).effectsoflanduseandcultivationtimeonsoilorganicandinorganiccarbonstorageindeepsoils.journalofgeographicalsciences,30(6),921-934.
MLA	Yu Xia,et al."effectsoflanduseandcultivationtimeonsoilorganicandinorganiccarbonstorageindeepsoils".journalofgeographicalsciences 30.6(2020):921-934.