NWIPB OpenIR
Climate factors regulate the depth dependency of soil organic carbon under grazing exclusion in Chinese grasslands: A meta-analysis
Peng, Cuoji; Shi, Lina; He, Yicheng; Yao, Zeying; Lin, Zhenrong; Hu, Meng-ai; Yin, Ning; Xu, Hengkang; Li, Yikang; Zhou, Huakun; Lu, Xinmin; Liu, Kesi; Shao, Xinqing
2023
Source PublicationLAND DEGRADATION & DEVELOPMENT
Volume34Issue:16Pages:4924
AbstractSoil carbon (C) is one of the most abundant C pools in terrestrial ecosystems, and its dynamics is highly dependent on soil depth. Grazing exclusion (GE) has proven to be a promising approach for enhancing C sequestration; however, the comprehensive analysis on the depth distribution of soil C and driving factors of soil C dynamics under GE are still lacking. This study collected data comprising 563 paired observations from 75 papers to analyze the distribution characteristics and the driving factors of soil organic carbon (SOC) changes with soil depth under GE in Chinese grasslands. The results showed that GE positively contributed to soil C sequestration, and the change range of SOC were higher (47.70%) in the subsoil (>20 cm) than in the topsoil layer (0-20 cm; 29.24%). Furthermore, SOC was influenced by GE duration, exhibiting an increasing trend and reaching its highest value at 13-15 years of GE, then remaining stable or slightly decreasing thereafter. Boosted regression trees (BRTs) showed that climatic factors were the primary determinants of SOC changes; however, the key drivers of SOC varied across different soil depths. Mean annual precipitation (MAP) was the key driver of topsoil C dynamics, accounting for 32.7% of the variance. In contrast, mean annual temperature (MAT) regulated the response of subsoil SOC to GE, explaining 48.23% of the variance. In addition, plant biomass was a significant factor influencing the depth distribution of soil C under GE, and its effect on SOC decreased with increasing soil depth. Our study provides evidence that the subsoil has a greater potential for C sequestration than the topsoil layer after GE, and future studies should consider deep soil C dynamics to accurately assess C sequestration in grassland ecosystems.
Indexed BySCIE
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/61609
Collection中国科学院西北高原生物研究所
Recommended Citation
GB/T 7714
Peng, Cuoji,Shi, Lina,He, Yicheng,et al. Climate factors regulate the depth dependency of soil organic carbon under grazing exclusion in Chinese grasslands: A meta-analysis[J]. LAND DEGRADATION & DEVELOPMENT,2023,34(16):4924.
APA Peng, Cuoji.,Shi, Lina.,He, Yicheng.,Yao, Zeying.,Lin, Zhenrong.,...&Shao, Xinqing.(2023).Climate factors regulate the depth dependency of soil organic carbon under grazing exclusion in Chinese grasslands: A meta-analysis.LAND DEGRADATION & DEVELOPMENT,34(16),4924.
MLA Peng, Cuoji,et al."Climate factors regulate the depth dependency of soil organic carbon under grazing exclusion in Chinese grasslands: A meta-analysis".LAND DEGRADATION & DEVELOPMENT 34.16(2023):4924.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Peng, Cuoji]'s Articles
[Shi, Lina]'s Articles
[He, Yicheng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Peng, Cuoji]'s Articles
[Shi, Lina]'s Articles
[He, Yicheng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Peng, Cuoji]'s Articles
[Shi, Lina]'s Articles
[He, Yicheng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.