naa a22 4500 510737854 CHVBK 20180411083017.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11284-013-1072-7 doi (NATIONALLICENCE)springer-10.1007/s11284-013-1072-7 The role of carbon flux and biometric observations in constraining a terrestrial ecosystem model: a case study in disturbed forests in East Asia [Elektronische Daten] [Masayuki Kondo, Kazuhito Ichii, Masahito Ueyama, Yasuko Mizoguchi, Ryuichi Hirata, Nobuko Saigusa] The process of confining unnecessary freedom is a step toward advanced ecosystem modeling. This study demonstrates the importance of carbon flux and biometric observation in constraining a terrestrial ecosystem model with a simple optimization scheme. At the selected sites from AsiaFlux network, a simultaneous optimization scheme for both carbon flux and biomass was compared with carbon flux-oriented and biomass-oriented optimization schemes using the Biome-BGC model. The optimization scheme oriented to either carbon flux or biomass provided simulation results that were consistent with observations, but with reduced performance in unconstrained variables. The simultaneous optimization scheme yielded results that were consistent with observations for both carbon flux and biomass. By comparing long-term projections simulated by three schemes, it was found that the optimization oriented only to carbon flux has limited performance because misrepresented biomass significantly affected a projection of carbon exchange through heterotrophic respiration. From these experiments, we found that (1) a process model like Biome-BGC is capable of reproducing both carbon flux and biomass within acceptable proximity, (2) constraining biomass is importance not just because it is one of carbon cycle components, but also it significantly affects simulations of carbon flux. Thus, it is important to invest more effort to improve simulation of biomass as well as carbon flux. The Ecological Society of Japan, 2013 Biomass nationallicence Eddy covariance nationallicence Carbon cycle nationallicence Disturbance nationallicence Terrestrial ecosystem model nationallicence Optimization nationallicence Kondo Masayuki Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, 960-1296, Fukushima, Japan aut Ichii Kazuhito Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, 960-1296, Fukushima, Japan aut Ueyama Masahito Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, 599-8531, Sakai, Osaka, Japan aut Mizoguchi Yasuko Hokkaido Research Center, Forestry and Forest Products Research Institute, 7 Hitsujigaoka, Toyohira, 062-8516, Sapporo, Japan aut Hirata Ryuichi National Institute for Environmental Studies, 16-2, Onogawa, 305-8506, Tsukuba, Japan aut Saigusa Nobuko National Institute for Environmental Studies, 16-2, Onogawa, 305-8506, Tsukuba, Japan aut Ecological Research Springer Japan 28/5(2013-09-01), 893-905 0912-3814 28:5<893 2013 28 11284 https://doi.org/10.1007/s11284-013-1072-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1072-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kondo Masayuki Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, 960-1296, Fukushima, Japan aut NATIONALLICENCE 700 1- Ichii Kazuhito Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, 960-1296, Fukushima, Japan aut NATIONALLICENCE 700 1- Ueyama Masahito Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, 599-8531, Sakai, Osaka, Japan aut NATIONALLICENCE 700 1- Mizoguchi Yasuko Hokkaido Research Center, Forestry and Forest Products Research Institute, 7 Hitsujigaoka, Toyohira, 062-8516, Sapporo, Japan aut NATIONALLICENCE 700 1- Hirata Ryuichi National Institute for Environmental Studies, 16-2, Onogawa, 305-8506, Tsukuba, Japan aut NATIONALLICENCE 700 1- Saigusa Nobuko National Institute for Environmental Studies, 16-2, Onogawa, 305-8506, Tsukuba, Japan aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/5(2013-09-01), 893-905 0912-3814 28:5<893 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer