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Al/Fe Mineral Controls on Soil Organic Carbon Stock Across Tibetan Alpine Grasslands

文献类型：期刊论文

作者Fang, Kai2; Qin, Shuqi2; Chen, Leiyi; Zhang, Qiwen2; Yang, Yuanhe2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
出版日期2019
卷号124期号:2页码:247-259
关键词carbon cycle climate feedback geochemistry mineral protection soil organic carbon stabilization
ISSN号2169-8953
DOI10.1029/2018JG004782
文献子类Article
英文摘要Adequate understanding of the controlling factors of soil carbon (C) stock is crucial for improving the predictability of Earth System Models in exploring terrestrial C-climate feedback. Current studies, however, mainly focus on climatic and edaphic variables and rarely explore the effects of mineral protection in regulating soil organic carbon (SOC) stock over broad geographic scale. Particularly, the relative importance of mineral protection compared with other factors is unclear. Based on large-scale soil inventory, here we filled this knowledge gap by exploring the effects of Al/Fe-(hydr) oxides on SOC and three C fractions across Tibetan alpine grasslands via linear regression, partial correlation, and variance partitioning analyses, and also by comparing the degree of mineral protection in alpine grasslands with other ecosystems. Our results showed that SOC and C fractions across Tibetan alpine grasslands were regulated by Al/Fe-(hydr) oxides, with the incorporation of mineral variables increasing the explained variations by 10.1% for SOC content, 13.4% for coarse particulate organic matter, 12.6% for microaggregate associated C, and 21.9% for silt and clay associated C. Moreover, the contribution of mineral effects exceeded that of climatic and edaphic factors, particularly in the silt and clay associated C fraction. In addition, about 15.812.0% of SOC pools were associated with Fe, which was equal to or higher than those in temperate and tropical-subtropical ecosystems. Taken together, these results demonstrate the significant role of Al/Fe minerals in the stabilization of SOC across Tibetan alpine grasslands, highlighting the importance of incorporating C-mineral interactions into ESMs for better understanding the terrestrial C-climate feedback.
学科主题Environmental Sciences ; Geosciences, Multidisciplinary
出版地WASHINGTON
电子版国际标准刊号2169-8961
WOS关键词FOREST SOILS ; TEMPERATURE SENSITIVITY ; PERMAFROST SOILS ; MATTER ; IRON ; STORAGE ; CLIMATE ; STABILIZATION ; DYNAMICS ; ASSOCIATIONS
WOS研究方向Environmental Sciences & Ecology ; Geology
语种英语
WOS记录号WOS:000460859100004
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670482, 31825006, 31770557] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-SMC049] ; Chinese Academy of Sciences-Peking University Pioneer Cooperation Team ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA19070303]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/19459]  
专题植被与环境变化国家重点实验室
作者单位1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Fang, Kai,Qin, Shuqi,Chen, Leiyi,et al. Al/Fe Mineral Controls on Soil Organic Carbon Stock Across Tibetan Alpine Grasslands[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2019,124(2):247-259.
APA Fang, Kai,Qin, Shuqi,Chen, Leiyi,Zhang, Qiwen,&Yang, Yuanhe.(2019).Al/Fe Mineral Controls on Soil Organic Carbon Stock Across Tibetan Alpine Grasslands.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(2),247-259.
MLA Fang, Kai,et al."Al/Fe Mineral Controls on Soil Organic Carbon Stock Across Tibetan Alpine Grasslands".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.2(2019):247-259.

入库方式： OAI收割

来源：植物研究所

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