Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern China
Urbanization is accelerating globally, causing a variety of environmental changes such as increases in air temperature, precipitation, atmospheric CO<sub>2</sub>, and nitrogen (N) deposition. However, the effects of these changes on forest soil carbon (C) sequestration remain largely unc...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2013-10-01
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| Series: | Biogeosciences |
| Online Access: | http://www.biogeosciences.net/10/6609/2013/bg-10-6609-2013.pdf |
| _version_ | 1818322400187514880 |
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| author | H. Chen W. Zhang F. Gilliam L. Liu J. Huang T. Zhang W. Wang J. Mo |
| author_facet | H. Chen W. Zhang F. Gilliam L. Liu J. Huang T. Zhang W. Wang J. Mo |
| author_sort | H. Chen |
| collection | DOAJ |
| description | Urbanization is accelerating globally, causing a variety of environmental changes such as increases in air temperature, precipitation, atmospheric CO<sub>2</sub>, and nitrogen (N) deposition. However, the effects of these changes on forest soil carbon (C) sequestration remain largely unclear. Here, we used urban-to-rural environmental gradients in Guangdong Province, southern China, to address the potential effects of these environmental changes on soil C sequestration in <i>Pinus massoniana</i> forests. In contrast to our expectations and earlier observations, soil C content in urban sites was significantly lower than that in suburban and rural sites. Lower soil C pools in urban sites were correlated with a significant decrease in fine root biomass and a potential increase in soil organic C decomposition. Variation of soil C pools was also a function of change in soil C fractions. Heavy fraction C content in urban sites was significantly lower than that in suburban and rural sites. By contrast, light fraction C content did not vary significantly along the urban-to-rural gradient. Our results suggest that urbanization-induced environmental changes may have a negative effect on forest soil C in the studied region. |
| first_indexed | 2024-12-13T10:56:11Z |
| format | Article |
| id | doaj.art-43831d65a70741f98c42b30d0fda4d7b |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-12-13T10:56:11Z |
| publishDate | 2013-10-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-43831d65a70741f98c42b30d0fda4d7b2022-12-21T23:49:32ZengCopernicus PublicationsBiogeosciences1726-41701726-41892013-10-0110106609661610.5194/bg-10-6609-2013Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern ChinaH. ChenW. ZhangF. GilliamL. LiuJ. HuangT. ZhangW. WangJ. MoUrbanization is accelerating globally, causing a variety of environmental changes such as increases in air temperature, precipitation, atmospheric CO<sub>2</sub>, and nitrogen (N) deposition. However, the effects of these changes on forest soil carbon (C) sequestration remain largely unclear. Here, we used urban-to-rural environmental gradients in Guangdong Province, southern China, to address the potential effects of these environmental changes on soil C sequestration in <i>Pinus massoniana</i> forests. In contrast to our expectations and earlier observations, soil C content in urban sites was significantly lower than that in suburban and rural sites. Lower soil C pools in urban sites were correlated with a significant decrease in fine root biomass and a potential increase in soil organic C decomposition. Variation of soil C pools was also a function of change in soil C fractions. Heavy fraction C content in urban sites was significantly lower than that in suburban and rural sites. By contrast, light fraction C content did not vary significantly along the urban-to-rural gradient. Our results suggest that urbanization-induced environmental changes may have a negative effect on forest soil C in the studied region.http://www.biogeosciences.net/10/6609/2013/bg-10-6609-2013.pdf |
| spellingShingle | H. Chen W. Zhang F. Gilliam L. Liu J. Huang T. Zhang W. Wang J. Mo Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern China Biogeosciences |
| title | Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern China |
| title_full | Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern China |
| title_fullStr | Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern China |
| title_full_unstemmed | Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern China |
| title_short | Changes in soil carbon sequestration in <i>Pinus massoniana</i> forests along an urban-to-rural gradient of southern China |
| title_sort | changes in soil carbon sequestration in i pinus massoniana i forests along an urban to rural gradient of southern china |
| url | http://www.biogeosciences.net/10/6609/2013/bg-10-6609-2013.pdf |
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