Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine Peatland
The Zoige alpine peatlands are one of the highest and largest alpine peatlands in the world and play an important role in the global carbon cycle. Drainage is the main disturbance at Zoige, and the drawdown of the water table level changes CH<sub>4</sub> emissions. There is still much un...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-10-01
|
| Series: | Atmosphere |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4433/11/11/1165 |
| _version_ | 1797549536092094464 |
|---|---|
| author | Liang Yan Xiaodong Zhang Haidong Wu Enze Kang Yong Li Jinzhi Wang Zhongqing Yan Kerou Zhang Xiaoming Kang |
| author_facet | Liang Yan Xiaodong Zhang Haidong Wu Enze Kang Yong Li Jinzhi Wang Zhongqing Yan Kerou Zhang Xiaoming Kang |
| author_sort | Liang Yan |
| collection | DOAJ |
| description | The Zoige alpine peatlands are one of the highest and largest alpine peatlands in the world and play an important role in the global carbon cycle. Drainage is the main disturbance at Zoige, and the drawdown of the water table level changes CH<sub>4</sub> emissions. There is still much uncertainty relating to how CH<sub>4</sub> emissions respond to multiple water table levels. Here, we simulated six gradients (−30 cm, −20 cm, −10 cm, 0 cm, 10 cm, and 20 cm) of the water table level through a mesocosm manipulation experiment in the Zoige peatlands. The water table level had a significant effect on CH<sub>4</sub> emissions. CH<sub>4</sub> emissions did not change with water table levels from −30 cm to −10 cm, but significantly increased as the water table level increased above −10 cm. A significant log-linear relationship (R<sup>2</sup> = 0.44, <i>p</i> < 0.001) was found between CH<sub>4</sub> emissions and a water table level range from −10 to 20 cm. This study characterized the responses of CH<sub>4</sub> emissions to multiple water table levels and provide additional data for accurately evaluating CH<sub>4</sub> emissions. The results of this study also have several conservation implications for alpine peatlands. |
| first_indexed | 2024-03-10T15:15:59Z |
| format | Article |
| id | doaj.art-95dcb9999a35449aad82f34474e70193 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-10T15:15:59Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-95dcb9999a35449aad82f34474e701932023-11-20T18:54:06ZengMDPI AGAtmosphere2073-44332020-10-011111116510.3390/atmos11111165Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine PeatlandLiang Yan0Xiaodong Zhang1Haidong Wu2Enze Kang3Yong Li4Jinzhi Wang5Zhongqing Yan6Kerou Zhang7Xiaoming Kang8Institute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaInstitute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, ChinaThe Zoige alpine peatlands are one of the highest and largest alpine peatlands in the world and play an important role in the global carbon cycle. Drainage is the main disturbance at Zoige, and the drawdown of the water table level changes CH<sub>4</sub> emissions. There is still much uncertainty relating to how CH<sub>4</sub> emissions respond to multiple water table levels. Here, we simulated six gradients (−30 cm, −20 cm, −10 cm, 0 cm, 10 cm, and 20 cm) of the water table level through a mesocosm manipulation experiment in the Zoige peatlands. The water table level had a significant effect on CH<sub>4</sub> emissions. CH<sub>4</sub> emissions did not change with water table levels from −30 cm to −10 cm, but significantly increased as the water table level increased above −10 cm. A significant log-linear relationship (R<sup>2</sup> = 0.44, <i>p</i> < 0.001) was found between CH<sub>4</sub> emissions and a water table level range from −10 to 20 cm. This study characterized the responses of CH<sub>4</sub> emissions to multiple water table levels and provide additional data for accurately evaluating CH<sub>4</sub> emissions. The results of this study also have several conservation implications for alpine peatlands.https://www.mdpi.com/2073-4433/11/11/1165alpine peatlandshuman disturbanceswater table levelmethane emissions |
| spellingShingle | Liang Yan Xiaodong Zhang Haidong Wu Enze Kang Yong Li Jinzhi Wang Zhongqing Yan Kerou Zhang Xiaoming Kang Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine Peatland Atmosphere alpine peatlands human disturbances water table level methane emissions |
| title | Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine Peatland |
| title_full | Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine Peatland |
| title_fullStr | Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine Peatland |
| title_full_unstemmed | Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine Peatland |
| title_short | Disproportionate Changes in the CH<sub>4</sub> Emissions of Six Water Table Levels in an Alpine Peatland |
| title_sort | disproportionate changes in the ch sub 4 sub emissions of six water table levels in an alpine peatland |
| topic | alpine peatlands human disturbances water table level methane emissions |
| url | https://www.mdpi.com/2073-4433/11/11/1165 |
| work_keys_str_mv | AT liangyan disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT xiaodongzhang disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT haidongwu disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT enzekang disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT yongli disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT jinzhiwang disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT zhongqingyan disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT kerouzhang disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland AT xiaomingkang disproportionatechangesinthechsub4subemissionsofsixwatertablelevelsinanalpinepeatland |