Vegetation Types Alter Soil Respiration and Its Temperature Sensitivity at the Field Scale in an Estuary Wetland
文献类型：期刊论文
| 作者 | Han, Guangxuan1,2 ; Xing, Qinghui1; Luo, Yiqi2; Rafique, Rashad2; Yu, Junbao1; Mikle, Nate2
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| 刊名 | PLOS ONE
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| 出版日期 | 2014-03-07 |
| 卷号 | 9期号:3页码:e91182 |
| 关键词 | CARBON-DIOXIDE FLUX CO2 EFFLUX HETEROTROPHIC COMPONENTS PHOTOSYNTHESIS CONTROLS AGRICULTURAL ECOSYSTEM TEMPORAL VARIATION SEMIARID STEPPE FOREST WATER RHIZOSPHERE |
| ISSN号 | 1932-6203 |
| 产权排序 | [Han, Guangxuan; Xing, Qinghui; Yu, Junbao] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China; [Han, Guangxuan; Luo, Yiqi; Rafique, Rashad; Mikle, Nate] Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA |
| 通讯作者 | Han, GX (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China. gxhan@yic.ac.cn ; jbyu@yic.ac.cn |
| 中文摘要 | Vegetation type plays an important role in regulating the temporal and spatial variation of soil respiration. Therefore, vegetation patchiness may cause high uncertainties in the estimates of soil respiration for scaling field measurements to ecosystem level. Few studies provide insights regarding the influence of vegetation types on soil respiration and its temperature sensitivity in an estuary wetland. In order to enhance the understanding of this issue, we focused on the growing season and investigated how the soil respiration and its temperature sensitivity are affected by the different vegetation (Phragmites australis, Suaeda salsa and bare soil) in the Yellow River Estuary. During the growing season, there were significant linear relationships between soil respiration rates and shoot and root biomass, respectively. On the diurnal timescale, daytime soil respiration was more dependent on net photosynthesis. A positive correlation between soil respiration and net photosynthesis at the Phragmites australis site was found. There were exponential correlations between soil respiration and soil temperature, and the fitted Q(10) values varied among different vegetation types (1.81, 2.15 and 3.43 for Phragmites australis, Suaeda salsa and bare soil sites, respectively). During the growing season, the mean soil respiration was consistently higher at the Phragmites australis site (1.11 mu mol CO2 m(-2) s(-1)), followed by the Suaeda salsa site (0.77 mu mol CO2 m(-2) s(-1)) and the bare soil site (0.41 mu mol CO2 m(-2) s(-1)). The mean monthly soil respiration was positively correlated with shoot and root biomass, total C, and total N among the three vegetation patches. Our results suggest that vegetation patchiness at a field scale might have a large impact on ecosystem-scale soil respiration. Therefore, it is necessary to consider the differences in vegetation types when using models to evaluate soil respiration in an estuary wetland. |
| 英文摘要 | Vegetation type plays an important role in regulating the temporal and spatial variation of soil respiration. Therefore, vegetation patchiness may cause high uncertainties in the estimates of soil respiration for scaling field measurements to ecosystem level. Few studies provide insights regarding the influence of vegetation types on soil respiration and its temperature sensitivity in an estuary wetland. In order to enhance the understanding of this issue, we focused on the growing season and investigated how the soil respiration and its temperature sensitivity are affected by the different vegetation (Phragmites australis, Suaeda salsa and bare soil) in the Yellow River Estuary. During the growing season, there were significant linear relationships between soil respiration rates and shoot and root biomass, respectively. On the diurnal timescale, daytime soil respiration was more dependent on net photosynthesis. A positive correlation between soil respiration and net photosynthesis at the Phragmites australis site was found. There were exponential correlations between soil respiration and soil temperature, and the fitted Q(10) values varied among different vegetation types (1.81, 2.15 and 3.43 for Phragmites australis, Suaeda salsa and bare soil sites, respectively). During the growing season, the mean soil respiration was consistently higher at the Phragmites australis site (1.11 mu mol CO2 m(-2) s(-1)), followed by the Suaeda salsa site (0.77 mu mol CO2 m(-2) s(-1)) and the bare soil site (0.41 mu mol CO2 m(-2) s(-1)). The mean monthly soil respiration was positively correlated with shoot and root biomass, total C, and total N among the three vegetation patches. Our results suggest that vegetation patchiness at a field scale might have a large impact on ecosystem-scale soil respiration. Therefore, it is necessary to consider the differences in vegetation types when using models to evaluate soil respiration in an estuary wetland. |
| 学科主题 | Multidisciplinary Sciences |
| 研究领域[WOS] | Science & Technology - Other Topics |
| 关键词[WOS] | CARBON-DIOXIDE FLUX ; CO2 EFFLUX ; HETEROTROPHIC COMPONENTS ; PHOTOSYNTHESIS CONTROLS ; AGRICULTURAL ECOSYSTEM ; TEMPORAL VARIATION ; SEMIARID STEPPE ; FOREST ; WATER ; RHIZOSPHERE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000332485800112 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/8765]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 烟台海岸带研究所_滨海湿地实验室 |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China 2.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA |
| 推荐引用方式 GB/T 7714 | Han, Guangxuan,Xing, Qinghui,Luo, Yiqi,et al. Vegetation Types Alter Soil Respiration and Its Temperature Sensitivity at the Field Scale in an Estuary Wetland[J]. PLOS ONE,2014,9(3):e91182. |
| APA | Han, Guangxuan,Xing, Qinghui,Luo, Yiqi,Rafique, Rashad,Yu, Junbao,&Mikle, Nate.(2014).Vegetation Types Alter Soil Respiration and Its Temperature Sensitivity at the Field Scale in an Estuary Wetland.PLOS ONE,9(3),e91182. |
| MLA | Han, Guangxuan,et al."Vegetation Types Alter Soil Respiration and Its Temperature Sensitivity at the Field Scale in an Estuary Wetland".PLOS ONE 9.3(2014):e91182. |
入库方式： OAI收割
来源：烟台海岸带研究所
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