Carbon and Nitrogen Storage in Inner Mongolian Grasslands: Relationships with Climate and Soil Texture
He, NP; Wang, RM; Zhang, YH; Chen, QS
2014
Source PublicationPEDOSPHERE
ISSN1002-0160
Volume24Issue:3Pages:391-398
AbstractUnderstanding the spatial variability of soil carbon (C) storage and its relationship with climate and soil texture is critical for developing regional C models and for predicting the potential impact of climate change on soil C storage. On the basis of soil data from a transect across the Inner Mongolian grasslands, we determined the quantitative relationships of C and nitrogen (N) in bulk soil and particle-size fractions (sand, silt, and clay) with climate and soil texture to evaluate the major factors controlling soil C and N storage and to predict the effect of climate changes on soil C and N storage. The contents of C and N in the bulk soil and the different fractions in the 0-20 and 20-40 cm soil layers were positively correlated with the mean annual precipitation (MAP) and negatively correlated with the mean annual temperature (MAT). The responses of C storage in the soil and particle-size fractions to MAP and MAT were more sensitive in the 0-20 cm than in the 20-40 cm soil layer. Although MAP and MAT were both important factors influencing soil C storage, the models that include only MAP could well explain the variation in soil C storage in the Inner Mongolian grasslands. Because of the high correlation between MAP and MAT in the region, the models including MAT did not significantly enhance the model precision. Moreover, the contribution of the fine fraction (silt and clay) to the variation in soil C storage was rather small because of the very low fine fraction content in the Inner Mongolian grasslands.
SubtypeJournal
Keywordmean annual precipitation mean annual temperature native grassland particle-size fraction soil organic matter
Subject AreaAgriculture
WOS Subject ExtendedSoil Science
WOS KeywordPARTICLE-SIZE FRACTIONS ; ORGANIC-MATTER ; LAND-USE ; POOLS ; CULTIVATION ; TURNOVER ; GRADIENT ; FORESTS ; CHINA
Indexed BySCI
Language英语
WOS IDWOS:000336890200010
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44539
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
He, NP,Wang, RM,Zhang, YH,et al. Carbon and Nitrogen Storage in Inner Mongolian Grasslands: Relationships with Climate and Soil Texture[J]. PEDOSPHERE,2014,24(3):391-398.
APA He, NP,Wang, RM,Zhang, YH,&Chen, QS.(2014).Carbon and Nitrogen Storage in Inner Mongolian Grasslands: Relationships with Climate and Soil Texture.PEDOSPHERE,24(3),391-398.
MLA He, NP,et al."Carbon and Nitrogen Storage in Inner Mongolian Grasslands: Relationships with Climate and Soil Texture".PEDOSPHERE 24.3(2014):391-398.
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