Soil Respiration at Different Stand Ages (5, 10, and 20/30 Years) in Coniferous (Pinus tabulaeformis Carriere) and Deciduous (Populus davidiana Dode) Plantations in a Sandstorm Source Area
文献类型：SCI/SSCI论文
| 作者 | Zhao X.; Li, F. D.; Zhang, W. J.; Ai, Z. P.; Shen, H. T.; Liu, X. P.; Cao, J. S.; Manevski, K.; Shi, PL; He, NP |
| 发表日期 | 2016 |
| 关键词 | forest type soil respiration soil temperature soil water content stand age Q(10) different developmental-stages temperature sensitivity poplar plantations spatial variation carbon-cycle co2 efflux forest china patterns q(10) |
| 英文摘要 | Understanding the effects of stand age and forest type on soil respiration is crucial for predicting the potential of soil carbon sequestration. Thus far, however, there is no consensus regarding the variations in soil respiration caused by stand age and forest type. This study investigated soil respiration and its temperature sensitivity at three stand ages (5, 10, and 20 or 30 years) in two plantations of coniferous (Pinus tabulaeformis Carrisre) and deciduous (Populus davidiana Dode) species using an automated chamber system in 2013 in the Beijing-Tianjin sandstorm source area. Results showed that mean soil respiration in the 5-, 10-, and 20/30-year-old plantations was 3.37, 3.17, and 2.99 mu mol.m(-2).s(-1) for P. tabulaeformis and 2.92, 2.85, and 2.57 mu mol.m(-2).s(-1) for P. davidiana, respectively. Soil respiration decreased with stand age for both species. There was no significant difference in soil respiration between the two plantation species at ages 5 and 10 years (p > 0.05). Temperature sensitivity of soil respiration, which ranged from 1.85-1.99 in P. tabulaeformis and 2.20-2.46 in P. davidiana plantations, was found to increase with stand age. Temperature sensitivity was also significantly higher in P. davidiana plantations and when the soil water content was below 12.8%. Temperature sensitivity incorporated a combined response of soil respiration to soil temperature, soil water content, soil organic carbon, and fine root biomass and, thus, provided an ecological metric for comparing forest carbon dynamics of these species. |
| 出处 | Forests |
| 卷 | 7 |
| 期 | 8 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1999-4907 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/43940]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_生态网络实验室 |
| 推荐引用方式 GB/T 7714 | Zhao X.,Li, F. D.,Zhang, W. J.,et al. Soil Respiration at Different Stand Ages (5, 10, and 20/30 Years) in Coniferous (Pinus tabulaeformis Carriere) and Deciduous (Populus davidiana Dode) Plantations in a Sandstorm Source Area. 2016. |
入库方式： OAI收割
来源：地理科学与资源研究所
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