Arid
DOI10.1029/2021GB007038
Contrasting Responses of Soil Inorganic Carbon to Afforestation in Acidic Versus Alkaline Soils
Hong, Songbai; Chen, Anping
通讯作者Chen, AP
来源期刊GLOBAL BIOGEOCHEMICAL CYCLES
ISSN0886-6236
EISSN1944-9224
出版年2022
卷号36期号:1
英文摘要Afforestation is recommended as an effective approach for carbon sequestration and environmental benefits. However, it remains less clear, and sometimes controversial, regarding how afforestation may impact soil inorganic carbon (SIC), a crucial component of the ecosystem carbon pool. Using field data from 619 afforested plots and 163 control plots across northern China, we here investigated the relative and absolute differences in SIC between afforested and corresponding control plots. Our results suggested that afforestation increased SIC in acidic soils, while decreased SIC in alkaline soils. Fitting a linear mixed model and further a structure equation model, we found that afforestation-induced soil pH change was the most significant factor regulating SIC responses. In particular, SIC was more sensitive to pH change in more arid areas, where both soil pH and SIC stocks were high. Other factors could indirectly affect SIC responses to afforestation through modulating soil pH and soil organic carbon (SOC) dynamics. Moreover, afforestation-induced SIC changes also varied considerably among different species of tree plantations and across different soil depths. Importantly, in plantations of Pinus sylvestris var. mongholica, Pinus tabuliformis, and Populus spp., changes in SIC caused by afforestation were even comparable to that in SOC. Overall, our findings provide a data-based understanding on the comprehensive soil carbon dynamics following afforestation and its underlying mechanisms. With the increased use of afforestation and reforestation as nature-based solutions to climate change, their associated impacts on SIC need to be taken into account, especially in SIC-rich areas.
英文关键词plant-soil interactions soil carbon soil pH structural equation model nature-based solution
类型Article
语种英语
开放获取类型Green Submitted
收录类别SCI-E
WOS记录号WOS:000751223100009
WOS关键词NITROGEN DEPOSITION ; FOREST BIOMASS ; CLIMATE-CHANGE ; PH ; CHINA ; SEQUESTRATION ; NEOFORMATION ; CONSERVATION ; EMISSIONS ; BALANCE
WOS类目Environmental Sciences ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/376731
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GB/T 7714
Hong, Songbai,Chen, Anping. Contrasting Responses of Soil Inorganic Carbon to Afforestation in Acidic Versus Alkaline Soils[J],2022,36(1).
APA Hong, Songbai,&Chen, Anping.(2022).Contrasting Responses of Soil Inorganic Carbon to Afforestation in Acidic Versus Alkaline Soils.GLOBAL BIOGEOCHEMICAL CYCLES,36(1).
MLA Hong, Songbai,et al."Contrasting Responses of Soil Inorganic Carbon to Afforestation in Acidic Versus Alkaline Soils".GLOBAL BIOGEOCHEMICAL CYCLES 36.1(2022).
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