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Afforestation neutralizes soil pH
Hong, Songbai (Sino-French Institute for Earth System Science)
Piao, Shilong (Sino-French Institute for Earth System Science)
Chen, Anping (Purdue University. Department of Forestry and Natural Resources)
Liu, Yongwen (Sino-French Institute for Earth System Science)
Liu, Lingli (Zhongguo ke xue yuan. Institute of Botany)
Peng, Shushi (Sino-French Institute for Earth System Science)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i Aplicacions Forestals)
Sun, Yan (Sino-French Institute for Earth System Science)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Zeng, Hui (Peking University Shenzhen Graduate School)

Date: 2018
Abstract: Soil pH regulates soil biogeochemical processes and has cascading effects on terrestrial ecosystem structure and functions. Afforestation has been widely adopted to increase terrestrial carbon sequestration and enhance water and soil preservation. However, the effect of afforestation on soil pH is still poorly understood and inconclusive. Here we investigate the afforestation-caused soil pH changes with pairwise samplings from 549 afforested and 148 control plots in northern China. We find significant soil pH neutralization by afforestation—afforestation lowers pH in relatively alkaline soil but raises pH in relatively acid soil. The soil pH thresholds (TpH), the point when afforestation changes from increasing to decreasing soil pH, are species-specific, ranging from 5. 5 (Pinus koraiensis) to 7. 3 (Populus spp. ) with a mean of 6. 3. These findings indicate that afforestation can modify soil pH if tree species and initial pH are properly matched, which may potentially improve soil fertility and promote ecosystem productivity.
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Language: Anglès
Document: article ; recerca ; publishedVersion
Published in: Nature communications, Vol. 9 (2018) , art. 520, ISSN 2041-1723

DOI: 10.1038/s41467-018-02970-1
PMID: 29410472

7 p, 1.0 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (scientific output) > Experimental sciences > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Research articles
Articles > Published articles

 Record created 2018-04-25, last modified 2020-08-08

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