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Afforestation neutralizes soil pH.

Identifieur interne : 001063 ( Main/Exploration ); précédent : 001062; suivant : 001064

Afforestation neutralizes soil pH.

Auteurs : Songbai Hong [République populaire de Chine] ; Shilong Piao [République populaire de Chine] ; Anping Chen [États-Unis] ; Yongwen Liu [République populaire de Chine] ; Lingli Liu [République populaire de Chine] ; Shushi Peng [République populaire de Chine] ; Jordi Sardans [Espagne] ; Yan Sun [République populaire de Chine] ; Josep Pe Uelas [Espagne] ; Hui Zeng [République populaire de Chine]

Source :

RBID : pubmed:29410472

Descripteurs français

English descriptors

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.

DOI: 10.1038/s41467-018-02970-1
PubMed: 29410472
PubMed Central: PMC5802719


Affiliations:


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Le document en format XML

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<term>Carbon Sequestration (MeSH)</term>
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<term>Ecosystem (MeSH)</term>
<term>Forests (MeSH)</term>
<term>Hydrogen-Ion Concentration (MeSH)</term>
<term>Larix (MeSH)</term>
<term>Pinus (MeSH)</term>
<term>Populus (MeSH)</term>
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<term>Trees (MeSH)</term>
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<term>Arbres (MeSH)</term>
<term>Chine (MeSH)</term>
<term>Concentration en ions d'hydrogène (MeSH)</term>
<term>Forêts (MeSH)</term>
<term>Larix (MeSH)</term>
<term>Pinus (MeSH)</term>
<term>Populus (MeSH)</term>
<term>Sol (composition chimique)</term>
<term>Séquestration du carbone (MeSH)</term>
<term>Écosystème (MeSH)</term>
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<term>Soil</term>
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<term>Carbon Sequestration</term>
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<term>Ecosystem</term>
<term>Forests</term>
<term>Hydrogen-Ion Concentration</term>
<term>Larix</term>
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<term>Arbres</term>
<term>Chine</term>
<term>Concentration en ions d'hydrogène</term>
<term>Forêts</term>
<term>Larix</term>
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<div type="abstract" xml:lang="en">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 (T
<sub>pH</sub>
), 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.</div>
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<AbstractText>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 (T
<sub>pH</sub>
), 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.</AbstractText>
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