Soil organic carbon stocks and CO2 effluxes of native and exotic pine plantations in subtropical China
文献类型：SCI/SSCI论文
| 作者 | Wang Y. D.; Wang, H. M.; Xu, M. J.; Ma, Z. Q.; Wang, Z. L. |
| 发表日期 | 2015 |
| 关键词 | Autotrophic respiration Heterotrophic respiration Indigenous and introduced species Soil respiration Reforestation Subtropical forest greenhouse-gas fluxes forest floor south china litter layer masson pine rain-forest respiration rates ecosystems dynamics |
| 英文摘要 | The selection of tree species is critical for soil organic carbon (SOC) stock and dynamics under afforestation. Exotic tree species were widely introduced and have been considered as a form of human-induced global change. However, how exotic tree species, as compared with native ones, affect SOC storage and soil respiration (R-s) has not been sufficiently investigated. Here we studied this issue in an even-aged (22 years) plantation composed by native Masson pine (Pious massoniana Lamb.) (MP) and exotic slash pine (Pinus elliottii Engelm.) (SP) in subtropical China. A trenching method was used to partition R-s into heterotrophic (R-h) and autotrophic respiration (R-a). R-s and R-h were measured approximately biweeldy during August 2007 to December 2009. Our results showed that seasonal patterns of R-s and R-h in both pine forests were mainly affected by soil temperature and moisture (R-2 = 0.56-0.78, P<0.001). There was no difference in SOC stock (forest floor + mineral soil of 0-40 cm), R-h and turnover rate (R-h/SOC stock) between MP and SP forests. However, annual R-s, R-a and R-a/R-s, of MP were significantly 24%, 119% and 74% higher than those of SP, respectively. In contrast, even though MP and SP had similar fine and coarse root biomass, MP had significant higher ratios of R-a/fine root biomass and R-a/coarse root biomass than SP, suggesting a higher respiration rate in native pine species on a root biomass basis. We concluded that the exotic SP, as compared with indigenous MP, did not alter SOC stock, R-h and turnover rate but depressed R-a and R-s. Therefore, both pine species were recommended in case of reforestation in terms of SOC sequestration. (C) 2015 Elsevier B.V. All rights reserved. |
| 出处 | Catena |
| 卷 | 128 |
| 页 | 167-173 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0341-8162 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38929]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Wang Y. D.,Wang, H. M.,Xu, M. J.,et al. Soil organic carbon stocks and CO2 effluxes of native and exotic pine plantations in subtropical China. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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