Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1029/2021GB007038 |
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
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ISSN | 0886-6236 |
EISSN | 1944-9224 |
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 |
推荐引用方式 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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