Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan Plateau
Because permafrost is extremely sensitive to climate change, it is of great importance to understand the relationship between permafrost and vegetation biomass. This study aims to reveal the impacts of permafrost on above- and belowground vegetation biomass on the northern Qinghai-Tibetan Plateau. S...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-01-01
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| Series: | Arctic, Antarctic, and Alpine Research |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/15230430.2018.1447192 |
| _version_ | 1818953410793177088 |
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| author | Cuicui Mu Lili Li Feng Zhang Yuxing Li Xiongxin Xiao Qian Zhao Tingjun Zhang |
| author_facet | Cuicui Mu Lili Li Feng Zhang Yuxing Li Xiongxin Xiao Qian Zhao Tingjun Zhang |
| author_sort | Cuicui Mu |
| collection | DOAJ |
| description | Because permafrost is extremely sensitive to climate change, it is of great importance to understand the relationship between permafrost and vegetation biomass. This study aims to reveal the impacts of permafrost on above- and belowground vegetation biomass on the northern Qinghai-Tibetan Plateau. Soil temperature, moisture, active-layer thickness, vegetation coverage, aboveground biomass (AGB), belowground biomass (BGB), and soil organic carbon were investigated in the growing seasons during 2014–2016. The average AGB and BGB in the growing seasons were 0.036 and 0.83 g cm−2, respectively. The AGB was significantly positively correlated with BGB, soil moisture, and soil organic carbon content, but was significantly negatively correlated with mean annual ground temperature and active-layer thickness, suggesting that permafrost degradation can potentially decrease vegetation growth. The BGB was positively correlated with active-layer thickness and was negatively correlated with soil moisture. This study suggests that permafrost degradation can decrease the soil moisture on the northern Qinghai-Tibetan Plateau and thus decrease AGB. The decreased soil moisture can also lead to lower BGB, while the vegetation in drier soils tends to have higher BGB to access more water resources for plant growth. |
| first_indexed | 2024-12-20T10:05:50Z |
| format | Article |
| id | doaj.art-22265d402a204c58af27d36cfbd5bd64 |
| institution | Directory Open Access Journal |
| issn | 1523-0430 1938-4246 |
| language | English |
| last_indexed | 2024-12-20T10:05:50Z |
| publishDate | 2018-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Arctic, Antarctic, and Alpine Research |
| spelling | doaj.art-22265d402a204c58af27d36cfbd5bd642022-12-21T19:44:13ZengTaylor & Francis GroupArctic, Antarctic, and Alpine Research1523-04301938-42462018-01-0150110.1080/15230430.2018.14471921447192Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan PlateauCuicui Mu0Lili Li1Feng Zhang2Yuxing Li3Xiongxin Xiao4Qian Zhao5Tingjun Zhang6Lanzhou UniversityLanzhou UniversityLanzhou UniversityLanzhou UniversityLanzhou UniversityLanzhou UniversityLanzhou UniversityBecause permafrost is extremely sensitive to climate change, it is of great importance to understand the relationship between permafrost and vegetation biomass. This study aims to reveal the impacts of permafrost on above- and belowground vegetation biomass on the northern Qinghai-Tibetan Plateau. Soil temperature, moisture, active-layer thickness, vegetation coverage, aboveground biomass (AGB), belowground biomass (BGB), and soil organic carbon were investigated in the growing seasons during 2014–2016. The average AGB and BGB in the growing seasons were 0.036 and 0.83 g cm−2, respectively. The AGB was significantly positively correlated with BGB, soil moisture, and soil organic carbon content, but was significantly negatively correlated with mean annual ground temperature and active-layer thickness, suggesting that permafrost degradation can potentially decrease vegetation growth. The BGB was positively correlated with active-layer thickness and was negatively correlated with soil moisture. This study suggests that permafrost degradation can decrease the soil moisture on the northern Qinghai-Tibetan Plateau and thus decrease AGB. The decreased soil moisture can also lead to lower BGB, while the vegetation in drier soils tends to have higher BGB to access more water resources for plant growth.http://dx.doi.org/10.1080/15230430.2018.1447192climate changevegetationsoil moistureactive layerground temperature |
| spellingShingle | Cuicui Mu Lili Li Feng Zhang Yuxing Li Xiongxin Xiao Qian Zhao Tingjun Zhang Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan Plateau Arctic, Antarctic, and Alpine Research climate change vegetation soil moisture active layer ground temperature |
| title | Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan Plateau |
| title_full | Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan Plateau |
| title_fullStr | Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan Plateau |
| title_full_unstemmed | Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan Plateau |
| title_short | Impacts of permafrost on above- and belowground biomass on the northern Qinghai-Tibetan Plateau |
| title_sort | impacts of permafrost on above and belowground biomass on the northern qinghai tibetan plateau |
| topic | climate change vegetation soil moisture active layer ground temperature |
| url | http://dx.doi.org/10.1080/15230430.2018.1447192 |
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