Improving the light use efficiency model for simulating terrestrial vegetation gross primary production by the inclusion of diffuse radiation across ecosystems in China
文献类型：期刊论文
| 作者 | Wang, SQ ; Huang, K; Yan, H; Yan, HM; Zhou, L; Wang, HM; Zhang, JH; Yan, JH; Zhao, L; Wang, YF
|
| 刊名 | ECOLOGICAL COMPLEXITY
 |
| 出版日期 | 2015 |
| 卷号 | 23页码:1-13 |
| 关键词 | Cloudiness index Cloudiness index light use efficiency (CILUE) model Eddy covariance flux MOD17 model |
| ISSN号 | 1476-945X |
| 文献子类 | Journal |
| 英文摘要 | Qualification of gross primary production (GPP) of terrestrial ecosystem over large areas is important in understanding the response of terrestrial ecosystem to global climate change. While light use efficiency (LUE) models were widely used in regional carbon budget estimates, few studies consider the effect of diffuse radiation on LUE caused by clouds using a big leaf model. Here we developed a cloudiness index light use efficiency (CI-LUE) model based on the MOD17 model algorithm to estimate the terrestrial ecosystem GPP, in which the base light use efficiency encompassed the cloudiness index, maximum LUE and clear sky LUE. GPP measured at seven sites from 2003 to 2007 in China were used to calibrate and validate the CI-LUE model. The results showed that at forest sites and cropland site the CI-LUE model outperformed the Vegetation Photosynthesis Model (VPM), Terrestrial Ecosystem Carbon flux model (TEC), MOD17 model algorithm driven by in situ meteorological measurements and MODE GPP products, especially the R-2 of simulated GPP against flux measurements at Dinghushan forest site increased from 0.17 (MODIS GPP products) to 0.61 (CI-LUE). Instead, VPM model had the best agreement with GPP measurements followed by CI-LUE model and lastly TEC model at two grassland sites. Meanwhile, GPP calculated by CI-LUE model has less underestimation under cloudy skies in comparison with MOD17 model. This study demonstrated the potential of the CI-LUE model in improving GPP simulations resulting from the inclusion of diffuse radiation in regulating the base light use efficiency and maximum light use efficiency. (C) 2015 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences & Ecology |
| WOS关键词 | LEYMUS-CHINENSIS STEPPE ; NET PRIMARY PRODUCTION ; CARBON-DIOXIDE FLUXES ; SUB-ALPINE GRASSLAND ; FOREST ECOSYSTEMS ; TIBETAN PLATEAU ; INNER-MONGOLIA ; CLIMATE DATA ; WATER-VAPOR ; ATMOSPHERIC PARTICLES |
| 语种 | 英语 |
| WOS记录号 | WOS:000361582100002 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/44365]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 推荐引用方式 GB/T 7714 | Wang, SQ,Huang, K,Yan, H,et al. Improving the light use efficiency model for simulating terrestrial vegetation gross primary production by the inclusion of diffuse radiation across ecosystems in China[J]. ECOLOGICAL COMPLEXITY,2015,23:1-13. |
| APA | Wang, SQ.,Huang, K.,Yan, H.,Yan, HM.,Zhou, L.,...&Sun, LG.(2015).Improving the light use efficiency model for simulating terrestrial vegetation gross primary production by the inclusion of diffuse radiation across ecosystems in China.ECOLOGICAL COMPLEXITY,23,1-13. |
| MLA | Wang, SQ,et al."Improving the light use efficiency model for simulating terrestrial vegetation gross primary production by the inclusion of diffuse radiation across ecosystems in China".ECOLOGICAL COMPLEXITY 23(2015):1-13. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。