Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region
Erqian Cui, Kun Huang, M. Altaf Arain, Joshua B. Fisher, D. N. Huntzinger, Akihiko Ito, Yiqi Luo, Atul K. Jain, Jiafu Mao, A. M. Michalak, Shuli Niu, Nicholas C. Parazoo, Changhui Peng, Shushi Peng, Benjamin Poulter, D. M. Ricciuto, Kevin Schaefer, Christopher R. Schwalm, Xiaoying Shi, Hanqin Tian, Weile Wang, Jinsong Wang, Yaxing Wei, En‐Rong Yan, Liming Yan, Ning Zeng, Qiuan Zhu, Jianyang Xia
Abstract
Global and regional projections of climate change by Earth system models are limited by their uncertain estimates of terrestrial ecosystem productivity. At the middle to low latitudes, the East Asian monsoon region has higher productivity than forests in Europe‐Africa and North America, but its estimate by current generation of terrestrial biosphere models (TBMs) has seldom been systematically evaluated. Here, we developed a traceability framework to evaluate the simulated gross primary productivity (GPP) by 15 TBMs in the East Asian monsoon region. The framework links GPP to net primary productivity, biomass, leaf area and back to GPP via incorporating multiple vegetation functional properties of carbon‐use efficiency (CUE), vegetation C turnover time (τveg), leaf C fraction (Fleaf), specific leaf area (SLA), and leaf area index (LAI)‐level photosynthesis (PLAI), respectively. We then applied a relative importance algorithm to attribute intermodel variation at each node. The results showed that large intermodel variation in GPP over 1901–2010 were mainly propagated from their different representation of vegetation functional properties. For example, SLA explained 77% of the intermodel difference in leaf area, which contributed 90% to the simulated GPP differences. In addition, the models simulated higher CUE (18.1 ± 21.3%), τveg (18.2 ± 26.9%), and SLA (27.4±36.5%) than observations, leading to the overestimation of simulated GPP across the East Asian monsoon region. These results suggest the large uncertainty of current TBMs in simulating GPP is largely propagated from their poor representation of the vegetation functional properties and call for a better understanding of the covariations between plant functional properties in terrestrial ecosystems.- Cite:
- Erqian Cui, Kun Huang, M. Altaf Arain, Joshua B. Fisher, D. N. Huntzinger, Akihiko Ito, Yiqi Luo, Atul K. Jain, Jiafu Mao, A. M. Michalak, Shuli Niu, Nicholas C. Parazoo, Changhui Peng, Shushi Peng, Benjamin Poulter, D. M. Ricciuto, Kevin Schaefer, Christopher R. Schwalm, Xiaoying Shi, et al.. 2019. Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region. Global Biogeochemical Cycles, Volume 33, Issue 6, 33(6):668–689.
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@article{Cui-2019-Vegetation,
title = "Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region",
author = "Cui, Erqian and
Huang, Kun and
Arain, M. Altaf and
Fisher, Joshua B. and
Huntzinger, D. N. and
Ito, Akihiko and
Luo, Yiqi and
Jain, Atul K. and
Mao, Jiafu and
Michalak, A. M. and
Niu, Shuli and
Parazoo, Nicholas C. and
Peng, Changhui and
Peng, Shushi and
Poulter, Benjamin and
Ricciuto, D. M. and
Schaefer, Kevin and
Schwalm, Christopher R. and
Shi, Xiaoying and
Tian, Hanqin and
Wang, Weile and
Wang, Jinsong and
Wei, Yaxing and
Yan, En‐Rong and
Yan, Liming and
Zeng, Ning and
Zhu, Qiuan and
Xia, Jianyang",
journal = "Global Biogeochemical Cycles, Volume 33, Issue 6",
volume = "33",
number = "6",
year = "2019",
publisher = "American Geophysical Union (AGU)",
url = "https://gwf-uwaterloo.github.io/gwf-publications/G19-46001",
doi = "10.1029/2018gb005909",
pages = "668--689",
abstract = "Global and regional projections of climate change by Earth system models are limited by their uncertain estimates of terrestrial ecosystem productivity. At the middle to low latitudes, the East Asian monsoon region has higher productivity than forests in Europe‐Africa and North America, but its estimate by current generation of terrestrial biosphere models (TBMs) has seldom been systematically evaluated. Here, we developed a traceability framework to evaluate the simulated gross primary productivity (GPP) by 15 TBMs in the East Asian monsoon region. The framework links GPP to net primary productivity, biomass, leaf area and back to GPP via incorporating multiple vegetation functional properties of carbon‐use efficiency (CUE), vegetation C turnover time (τveg), leaf C fraction (Fleaf), specific leaf area (SLA), and leaf area index (LAI)‐level photosynthesis (PLAI), respectively. We then applied a relative importance algorithm to attribute intermodel variation at each node. The results showed that large intermodel variation in GPP over 1901{--}2010 were mainly propagated from their different representation of vegetation functional properties. For example, SLA explained 77{\%} of the intermodel difference in leaf area, which contributed 90{\%} to the simulated GPP differences. In addition, the models simulated higher CUE (18.1 {\mbox{$\pm$}} 21.3{\%}), τveg (18.2 {\mbox{$\pm$}} 26.9{\%}), and SLA (27.4{\mbox{$\pm$}}36.5{\%}) than observations, leading to the overestimation of simulated GPP across the East Asian monsoon region. These results suggest the large uncertainty of current TBMs in simulating GPP is largely propagated from their poor representation of the vegetation functional properties and call for a better understanding of the covariations between plant functional properties in terrestrial ecosystems.",
}
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<abstract>Global and regional projections of climate change by Earth system models are limited by their uncertain estimates of terrestrial ecosystem productivity. At the middle to low latitudes, the East Asian monsoon region has higher productivity than forests in Europe‐Africa and North America, but its estimate by current generation of terrestrial biosphere models (TBMs) has seldom been systematically evaluated. Here, we developed a traceability framework to evaluate the simulated gross primary productivity (GPP) by 15 TBMs in the East Asian monsoon region. The framework links GPP to net primary productivity, biomass, leaf area and back to GPP via incorporating multiple vegetation functional properties of carbon‐use efficiency (CUE), vegetation C turnover time (τveg), leaf C fraction (Fleaf), specific leaf area (SLA), and leaf area index (LAI)‐level photosynthesis (PLAI), respectively. We then applied a relative importance algorithm to attribute intermodel variation at each node. The results showed that large intermodel variation in GPP over 1901–2010 were mainly propagated from their different representation of vegetation functional properties. For example, SLA explained 77% of the intermodel difference in leaf area, which contributed 90% to the simulated GPP differences. In addition, the models simulated higher CUE (18.1 \pm 21.3%), τveg (18.2 \pm 26.9%), and SLA (27.4\pm36.5%) than observations, leading to the overestimation of simulated GPP across the East Asian monsoon region. These results suggest the large uncertainty of current TBMs in simulating GPP is largely propagated from their poor representation of the vegetation functional properties and call for a better understanding of the covariations between plant functional properties in terrestrial ecosystems.</abstract>
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%0 Journal Article %T Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region %A Cui, Erqian %A Huang, Kun %A Arain, M. Altaf %A Fisher, Joshua B. %A Huntzinger, D. N. %A Ito, Akihiko %A Luo, Yiqi %A Jain, Atul K. %A Mao, Jiafu %A Michalak, A. M. %A Niu, Shuli %A Parazoo, Nicholas C. %A Peng, Changhui %A Peng, Shushi %A Poulter, Benjamin %A Ricciuto, D. M. %A Schaefer, Kevin %A Schwalm, Christopher R. %A Shi, Xiaoying %A Tian, Hanqin %A Wang, Weile %A Wang, Jinsong %A Wei, Yaxing %A Yan, En‐Rong %A Yan, Liming %A Zeng, Ning %A Zhu, Qiuan %A Xia, Jianyang %J Global Biogeochemical Cycles, Volume 33, Issue 6 %D 2019 %V 33 %N 6 %I American Geophysical Union (AGU) %F Cui-2019-Vegetation %X Global and regional projections of climate change by Earth system models are limited by their uncertain estimates of terrestrial ecosystem productivity. At the middle to low latitudes, the East Asian monsoon region has higher productivity than forests in Europe‐Africa and North America, but its estimate by current generation of terrestrial biosphere models (TBMs) has seldom been systematically evaluated. Here, we developed a traceability framework to evaluate the simulated gross primary productivity (GPP) by 15 TBMs in the East Asian monsoon region. The framework links GPP to net primary productivity, biomass, leaf area and back to GPP via incorporating multiple vegetation functional properties of carbon‐use efficiency (CUE), vegetation C turnover time (τveg), leaf C fraction (Fleaf), specific leaf area (SLA), and leaf area index (LAI)‐level photosynthesis (PLAI), respectively. We then applied a relative importance algorithm to attribute intermodel variation at each node. The results showed that large intermodel variation in GPP over 1901–2010 were mainly propagated from their different representation of vegetation functional properties. For example, SLA explained 77% of the intermodel difference in leaf area, which contributed 90% to the simulated GPP differences. In addition, the models simulated higher CUE (18.1 \pm 21.3%), τveg (18.2 \pm 26.9%), and SLA (27.4\pm36.5%) than observations, leading to the overestimation of simulated GPP across the East Asian monsoon region. These results suggest the large uncertainty of current TBMs in simulating GPP is largely propagated from their poor representation of the vegetation functional properties and call for a better understanding of the covariations between plant functional properties in terrestrial ecosystems. %R 10.1029/2018gb005909 %U https://gwf-uwaterloo.github.io/gwf-publications/G19-46001 %U https://doi.org/10.1029/2018gb005909 %P 668-689
Markdown (Informal)
[Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region](https://gwf-uwaterloo.github.io/gwf-publications/G19-46001) (Cui et al., GWF 2019)
- Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region (Cui et al., GWF 2019)
ACL
- Erqian Cui, Kun Huang, M. Altaf Arain, Joshua B. Fisher, D. N. Huntzinger, Akihiko Ito, Yiqi Luo, Atul K. Jain, Jiafu Mao, A. M. Michalak, Shuli Niu, Nicholas C. Parazoo, Changhui Peng, Shushi Peng, Benjamin Poulter, D. M. Ricciuto, Kevin Schaefer, Christopher R. Schwalm, Xiaoying Shi, et al.. 2019. Vegetation Functional Properties Determine Uncertainty of Simulated Ecosystem Productivity: A Traceability Analysis in the East Asian Monsoon Region. Global Biogeochemical Cycles, Volume 33, Issue 6, 33(6):668–689.