Impact of estimated solar radiation on gross primary productivity simulation in subtropical plantation in southeast China
文献类型：SCI/SSCI论文
| 作者 | Li D. Q.; Ju, W. M.; Lu, D. S.; Zhou, Y. L.; Wang, H. M. |
| 发表日期 | 2015 |
| 关键词 | Sunshine duration Solar radiation Diffuse radiation Gross primary productivity use efficiency model sunshine duration global radiation terrestrial ecosystems carbon sequestration meteorological data forest ecosystems diffuse-radiation air-temperature satellite |
| 英文摘要 | Sunshine duration is widely used to estimate solar radiation, but this estimated inherently contains some uncertainties, limiting its applications. This study investigated the impacts of the estimated solar radiation on simulated gross primary productivity (GPP), which were obtained using ecosystem models - light use efficiency model (LUE) and process-based model - Boreal Ecosystem Productivity Simulator (BEPS) at an evergreen coniferous forest ecosystem in southeast China, The models for solar radiation and diffuse radiation estimation were calibrated through observation data from nearby meteorological stations. The results showed that the established model could be successfully used to estimate solar radiation with high coefficient of determination (0,92) and low root mean square error (2.18 MJ m(-2) day(-1)), but the solar radiation was overestimated when the clearness index was less than 0.15 and underestimated when it was within the range of 0.2-0.35 or greater than 0.6. The estimated solar radiation has significant influence on the diffuse radiation estimation and GPP simulation comparing with using observations. The two ecosystem models reacted differently to the errors of estimated solar radiation. For the LUE model, the estimated solar radiation led to the underestimated GPP in growing season (May October), and overestimated GPP during non-growing season (November-April) with the bias ranged from -11% to 10% depending on the month of a year. For the BEPS model, estimated solar radiation resulted in overestimated OPP in most months with the bias ranged from -6% to 20%. The difference between the simulated GPP based on these two sources of solar radiation could be counteracted to some extent at the annual scale, especially for LUE model. (C) 2015 Elsevier Ltd. All rights reserved. |
| 出处 | Solar Energy |
| 卷 | 120 |
| 页 | 175-186 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0038-092X |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38706]  |
| 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 | Li D. Q.,Ju, W. M.,Lu, D. S.,et al. Impact of estimated solar radiation on gross primary productivity simulation in subtropical plantation in southeast 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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