Spatial distribution of carbon balance in forest ecosystems across East Asia

Hirata, Ryuichi; Saigusa, Nobuko; Yamamoto, Susumu; Ohtani, Yoshikazu; Ide, Reiko; Asanuma, Jun; Gamo, Minoru; Hirano, Takashi; Kumakura, Hiroaki; Kosugi, Yukio; Li, Shenggong; Nakai, Yuichiro; Takagi, Kentaro; Tani, Makoto; Wang, Huimin

doi:10.1016/j.agrformet.2007.11.016

Cited by 152 publications

(107 citation statements)

References 63 publications

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“…In this study, we initially found that the spatial variations in GPP and RE are commonly controlled by MAT, MAP, and EVI (Table 3). The controls of temperature and precipitation on the spatial variations in GPP and RE are similarly reported in China , Asian Hirata et al, 2008), European, and American regions Luyssaert et al, 2007;Reichstein et al, 2007b). Furthermore, we found that GPP and RE responded to the common climatic and vegetation factors in a parallel way across The framework illustrates that GPP and RE show similar responses to the spatial variations in environmental conditions (such as MAT and MAP) (panel.a1) and ecosystem traits (EVI) (panel.b1).…”

Section: Underlying Mechanisms For the Covariation Between Gpp And Rementioning

confidence: 79%

“…In subarctic deciduous needle-leaved forests, RE is lower than 200 g C m −2 yr −1 , while RE can reach approximately 4000 g C m −2 yr −1 in evergreen broad-leaved forests Hirata et al, 2008). Temperature and precipitation are deemed the two critical climatic drivers for the variations in RE across space Hirata et al, 2008;Yu et al, 2013).…”

Section: The Ecological Implications Of the Covariation Between Gpp Amentioning

confidence: 99%

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Covariation between gross primary production and ecosystem respiration across space and the underlying mechanisms: A global synthesis

Chen

Zhu

et al. 2015

Agricultural and Forest Meteorology

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a b s t r a c tGross primary production (GPP) and ecosystem respiration (RE) are two important processes in the terrestrial carbon cycle. Understanding the relationships between GPP and RE across space, as well as the underlying mechanisms, is helpful for understanding the terrestrial carbon cycle and predicting the global carbon budget. In this study, we investigated the correlation between the spatial variations in GPP and RE by compiling carbon flux data from 264 sites across the Asian, European, North American, South American, African, and Oceanian regions. The results indicated that GPP and RE covaried across space regionally and globally (P < 0.001). The spatial variations in GPP explained 66-98% of the variations in RE in the six regions (approximately explained 60-76% when considered the effects of self-correlation caused by current flux partitioning algorithm), and it explained 90% of RE variations at the global scale (about 70% when considered the effects of self-correlation). RE/GPP values were not significantly different among the six regions or between the two hemispheres. RE/GPP values consistently averaged at 0.87 ± 0.04 along the spatial variations in climate and vegetation index. This covariation between GPP and RE across space is largely attributed to the parallel responses of GPP and RE to the common climatic and vegetation factors, but the underlying mechanism lies in productivity as the primary and direct substrate supplier for respiration which fundamentally constrains RE. These results suggest that the variation in photosynthate availability is the dominant driver for respiration across space and that this process must be fully considered in the cross-site RE comparisons.

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Section: Underlying Mechanisms For the Covariation Between Gpp And Rementioning

confidence: 79%

Section: The Ecological Implications Of the Covariation Between Gpp Amentioning

confidence: 99%

Covariation between gross primary production and ecosystem respiration across space and the underlying mechanisms: A global synthesis

Chen

Zhu

et al. 2015

Agricultural and Forest Meteorology

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“…However, we need to test applicability to other ecosystems to confirm universal applicability. Hirata et al (2008) and Chen et al (2013) reported linear increase in GPP and exponential increases in RE, with an increase in the annual mean air temperature of the studied forests across East Asia. However, we obtained better correlation coefficients by exponential regression of both GPP and RE to the annual mean air temperature, similar to those reported by Saigusa et al (2013), within the limited forest type and temperature range (from −9.4°C [NLG] to 9.2°C [FHK]).…”

Section: Seasonal and Intersite Variation Of Carbon Fluxes And Modis Laimentioning

confidence: 99%

“…Several previous studies were able to explain the spatial variation of carbon fluxes such as gross primary production (GPP), total ecosystem respiration (RE) and net ecosystem carbon dioxide exchange (NEE) in East Asian forests using temperature and precipitation as the explanatory variables (Hirata et al 2008;Chen et al 2013;Saigusa et al 2013). However, because GPP, RE and NEE are the products of abiotic (environment) and biotic (vegetation) factors, in this study, we evaluated the biotic characteristics by inversely estimating photosynthetic and respiratory parameters based on carbon flux and micrometeorology datasets, as well as explaining the intersite variation of GPP, RE and NEE.…”

Section: Introductionmentioning

confidence: 99%

Spatial and seasonal variations of CO₂flux and photosynthetic and respiratory parameters of larch forests in East Asia

Takagi

Hirata

Ide

et al. 2015

Soil Science and Plant Nutrition

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Larch (Larix spp.) forests are predominantly distributed across high latitudes of Eurasia. They potentially have a strong influence on the terrestrial carbon and energy cycles, because of their vast area and the large carbon stocks in their peat soils in the permafrost. In this study, we elucidated intersite variation of ecosystem photosynthetic and respiratory parameters of eight larch forests in East Asia using the CarboEastAsia carbon flux and micrometeorology dataset. These parameters were determined using the empirical relationship between the carbon fluxes (photosynthesis and respiration) and micrometeorological variables (light and temperature). In addition, we examined leaf area index (LAI) determined by Moderate Resolution Imaging Spectroradiometer (MODIS) remote sensing data to explain the intersite variation. Linear or exponential relationships with annual mean temperature or seasonal maximum LAI at the study sites were found for the annual carbon fluxes (gross primary production [GPP] and total ecosystem respiration [RE]) as well as for four of the five seasonal maximum values of determined photosynthetic and respiratory parameters (maximum GPP at light saturation, initial slope of the light-response curve, daytime respiration, and RE at the reference temperature of 10°C). Phenological indices, such as start day of the growing season, growing season length and growing season degree days explained much of the intersite variation of GPP and RE of the studied larch forests; however, the relationship between MODIS LAI and photosynthetic or respiratory parameters implies that the intersite variation in GPP and RE was caused not only by the temperature variation (abiotic factor), but also by the variation in the photosynthetic and respiration activity by vegetation (biotic factor) through the change in leaf (or whole vegetation) biomass. Our analysis shows that MODIS LAI serves as a good index to explain the variation of the ecosystem photosynthetic and respiratory characteristics of East Asian larch forests.

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“…Temperature is an important factor for regulating potential photosynthetic activity of vegetation, as well as the length of the growing season [33,34], both of which jointly determine ecosystem productivity [35]. In addition to temperature, precipitation is another determinant of the spatial variation of NPP [36,37].…”

Section: Climate Controlmentioning

confidence: 99%

Joint Control of Net Primary Productivity by Climate and Soil Nitrogen in the Forests of Eastern China

Zhan

Guo

Zhang

2018

Forests

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Abstract:The nature and extent of climate and soil nutrient controls in Chinese forests remain poorly resolved. Here, we synthesized the data on carbon-climate-soil in eastern China, and litter N was firstly taken into consideration, to examine the variation of net primary productivity (NPP) and its driving forces. Results showed that NPP had significant latitude pattern and varied substantially across climate zones. Bivariate analyses indicated that mean annual temperature (MAT), mean annual precipitation (MAP), soil N content (N soil ), and annual litter N (N re ) were the main controlling factors in spatial pattern of forest NPP. Notably, partial general linear model analysis revealed that MAT, MAP, and N re jointly explained 84.8% of the spatial variation of NPP. Among the three major factors, N re explained more variation of forest NPP than the other two factors, and MAT and MAP affected NPP mainly through the change of litter N rather than via themselves, highlighting the importance of litter N in estimating forest NPP. However, to accurately describe the pattern of forest NPP in China, more detailed field measurements and methodologies on NPP and relevant confounding factors should be addressed in future studies.

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Spatial distribution of carbon balance in forest ecosystems across East Asia

Cited by 152 publications

References 63 publications

Covariation between gross primary production and ecosystem respiration across space and the underlying mechanisms: A global synthesis

Covariation between gross primary production and ecosystem respiration across space and the underlying mechanisms: A global synthesis

Spatial and seasonal variations of CO₂flux and photosynthetic and respiratory parameters of larch forests in East Asia

Joint Control of Net Primary Productivity by Climate and Soil Nitrogen in the Forests of Eastern China

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Spatial distribution of carbon balance in forest ecosystems across East Asia

Cited by 152 publications

References 63 publications

Covariation between gross primary production and ecosystem respiration across space and the underlying mechanisms: A global synthesis

Covariation between gross primary production and ecosystem respiration across space and the underlying mechanisms: A global synthesis

Spatial and seasonal variations of CO2flux and photosynthetic and respiratory parameters of larch forests in East Asia

Joint Control of Net Primary Productivity by Climate and Soil Nitrogen in the Forests of Eastern China

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Spatial and seasonal variations of CO₂flux and photosynthetic and respiratory parameters of larch forests in East Asia