Soil organic carbon dynamics of black locust plantations in the middle Loess Plateau area of China
文献类型：期刊论文
| 作者 | Lu, N.1; Liski, J.2; Chang, R. Y.3 ; Akujarvi, A.2; Wu, X.1; Jin, T. T.4; Wang, Y. F.1; Fu, B. J.1
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| 刊名 | BIOGEOSCIENCES
 |
| 出版日期 | 2013 |
| 卷号 | 10期号:11页码:7053-7063 |
| 关键词 | bank collapse hydrological alternation riparian zone soil erosion Three Gorges Reservoir wave erosion |
| ISSN号 | 1726-4170 |
| 通讯作者 | Fu, B. J. |
| 英文摘要 | Soil organic carbon (SOC) is the largest terrestrial carbon pool and sensitive to land use and cover change; its dynamics are critical for carbon cycling in terrestrial ecosystems and the atmosphere. In this study, we combined a modeling approach and field measurements to examine the temporal dynamics of SOC following afforestation (Robinia pseudoacacia) of former arable land at six sites under different climatic conditions in the Loess Plateau during 19802010, where the annual mean precipitation ranging from 450 mm to 600 mm. The results showed that the measured mean SOC increased to levels higher than before afforestation when taking the last measurements (i.e., at age 25 to 30 yr) at all the sites, although it decreased at the wetter sites in the first few years. The accumulation rates of SOC were 1.58 to 6.22% yr(-1) in the upper 20 cm and 1.62 to 5.15% yr(-1) in the upper 40 cm of soil. The simulations reproduced the basic characteristics of measured SOC dynamics, suggesting that litter input and climatic factors (temperature and precipitation) were the major causes for SOC dynamics and the differences among the sites. They explained 88-96, 48-86 and 57-74% of the variations in annual SOC changes at the soil depths of 0-20, 0-40, and 0-100 cm, respectively. Notably, the simulated SOC decreased during the first few years at all the sites, although the magnitudes of decreases were smaller at the drier sites. This suggested that the modeling may be advantageous in capturing SOC changes at finer timescale. The discrepancy between the simulation and measurement was a result of uncertainties in model structure, data input, and sampling design. Our findings indicated that afforestation promoted soil carbon sequestration at the study sites during 1980-2010. Afforestation activities should decrease soil disturbances to reduce carbon release in the early stage. The long-term strategy for carbon fixation capability of the plantations should also consider the climate and site conditions, species adaptability, and successional stage of recovery. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Ecology ; Geosciences, Multidisciplinary |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology |
| 关键词[WOS] | ROBINIA-PSEUDOACACIA L. ; FOREST SOILS ; STAND AGE ; AFFORESTATION ; MODEL ; ACCUMULATION ; SEQUESTRATION ; DECOMPOSITION ; PRODUCTIVITY ; SENSITIVITY |
| 收录类别 | SCI |
| 原文出处 | http://www.biogeosciences.net/10/7053/2013/bg-10-7053-2013.html |
| 语种 | 英语 |
| WOS记录号 | WOS:000327814700019 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/8329]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Finnish Environm Inst SYKE, Nat Environm Ctr, Ecosyst Change Unit, Helsinki, Finland 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 4.China Inst Water Resources & Hydropower Res, Beijing 100038, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, N.,Liski, J.,Chang, R. Y.,et al. Soil organic carbon dynamics of black locust plantations in the middle Loess Plateau area of China[J]. BIOGEOSCIENCES,2013,10(11):7053-7063. |
| APA | Lu, N..,Liski, J..,Chang, R. Y..,Akujarvi, A..,Wu, X..,...&Fu, B. J..(2013).Soil organic carbon dynamics of black locust plantations in the middle Loess Plateau area of China.BIOGEOSCIENCES,10(11),7053-7063. |
| MLA | Lu, N.,et al."Soil organic carbon dynamics of black locust plantations in the middle Loess Plateau area of China".BIOGEOSCIENCES 10.11(2013):7053-7063. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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