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Kazuhito Ichii

Dados Biográficos

ID7992113
NOMEKazuhito Ichii
PRENOMESKazuhito
SOBRENOMEIchii
ASSINATURAICHII K
AFILIAÇÕESChiba University
ORCID0000-0002-8696-8084
VERIFICADOSim
TOTAL DE OBRAS6
TOTAL DE CITAÇÕES0
TOTAL COMO AUTOR6
TOTAL COMO EDITOR0
PRIMEIRO ANO DE PUBLICAÇÃO2016
ANO MAIS RECENTE DE PUBLICAÇÃO2025
ÍNDICE H0
  • Exploring the optimal geometry of satellites Himawari-8/9 to monitor seasonal variation in vegetation dynamics across Southeast Asia

    Open Access•Misaki Hase, Kazuhito Ichii et al.•ARTICLE•Environmental Research Letters•2025

    Dense and widespread tropical rainforests across Southeast Asia are crucial for the global carbon cycle. A new generation geostationary satellite, Himawari-8/9, and onboard sensor, the Advanced Himawari Imager (AHI), enables hyper-temporal vegetation monitoring in this cloud-prone region. However, AHI’s fixed viewing geometry varies spatially, making consistent vegetation monitoring challenging across a wide area at a seasonal scale. This study e…

  • Contrasting 20-year trends in NDVI at two Siberian larch forests with and without multiyear waterlogging-induced disturbances

    Open Access•Hirohiko Nagano, Ayumi Kotani et al.•ARTICLE•Environmental Research Letters•2022

    The fate of a boreal forest may depend on the trend in its normalized difference vegetation index (NDVI), such as whether the NDVI has been increasing significantly over the past few decades. In this study, we analyzed the responses of two Siberian larch forests at Spasskaya Pad and Elgeeii in eastern Siberia to various waterlogging-induced disturbances, using satellite-based NDVI and meteorological data for the 2000–2019 period. The forest at Sp…

  • Inferring CO 2 fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model

    Open Access•Masahito Ueyama, Kazuhito Ichii et al.•ARTICLE•Environmental Research Letters•2020

    Rising atmospheric CO 2 concentration ([CO 2 ]) enhances photosynthesis and reduces transpiration at the leaf, ecosystem, and global scale via the CO 2 fertilization effect. The CO 2 fertilization effect is among the most important processes for predicting the terrestrial carbon budget and future climate, yet it has been elusive to quantify. For evaluating the CO 2 fertilization effect on land photosynthesis and transpiration, we developed a tech…

  • Pervasive human-driven decline of life on Earth points to the need for transformative change

    Open Access•Sandra Dı́az, Josef Settele et al.•ARTICLE•Science•2019

    The time is now For decades, scientists have been raising calls for societal changes that will reduce our impacts on nature. Though much conservation has occurred, our natural environment continues to decline under the weight of our consumption. Humanity depends directly on the output of nature; thus, this decline will affect us, just as it does the other species with which we share this world. Díaz et al. review the findings of the largest asses…

  • Reconciliation of top-down and bottom-up CO 2 fluxes in Siberian larch forest

    Open Access•Kumiko Takata, Prabir K Patra et al.•ARTICLE•Environmental Research Letters•2017

    Carbon dioxide (CO _2 ) fluxes by different methods vary largely at global, regional and local scales. The net CO _2 fluxes by three bottom-up methods (tower observation (TWR), biogeochemical models (GTM), and a data-driven model (SVR)), and an ensemble of atmospheric inversions (top-down method, INV) are compared in Yakutsk, Siberia for 2004–2013. The region is characterized by highly homogeneous larch forest on a flat terrain. The ecosystem aro…

  • Regional carbon fluxes from land use and land cover change in Asia, 1980–2009

    Open Access•Leonardo Calle, Josep G Canadell et al.•ARTICLE•Environmental Research Letters•2016

    We present a synthesis of the land-atmosphere carbon flux from land use and land cover change (LULCC) in Asia using multiple data sources and paying particular attention to deforestation and forest regrowth fluxes. The data sources are quasi-independent and include the U.N. Food and Agriculture Organization-Forest Resource Assessment (FAO-FRA 2015; country-level inventory estimates), the Emission Database for Global Atmospheric Research (EDGARv4.…

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  • Regional carbon fluxes from land use and land cover change in Asia, 1980–2009

    Open Access•Leonardo Calle, Josep G Canadell et al.•ARTICLE•Environmental Research Letters•2016

    We present a synthesis of the land-atmosphere carbon flux from land use and land cover change (LULCC) in Asia using multiple data sources and paying particular attention to deforestation and forest regrowth fluxes. The data sources are quasi-independent and include the U.N. Food and Agriculture Organization-Forest Resource Assessment (FAO-FRA 2015; country-level inventory estimates), the Emission Database for Global Atmospheric Research (EDGARv4.…

  • Reconciliation of top-down and bottom-up CO 2 fluxes in Siberian larch forest

    Open Access•Kumiko Takata, Prabir K Patra et al.•ARTICLE•Environmental Research Letters•2017

    Carbon dioxide (CO _2 ) fluxes by different methods vary largely at global, regional and local scales. The net CO _2 fluxes by three bottom-up methods (tower observation (TWR), biogeochemical models (GTM), and a data-driven model (SVR)), and an ensemble of atmospheric inversions (top-down method, INV) are compared in Yakutsk, Siberia for 2004–2013. The region is characterized by highly homogeneous larch forest on a flat terrain. The ecosystem aro…

  • Pervasive human-driven decline of life on Earth points to the need for transformative change

    Open Access•Sandra Dı́az, Josef Settele et al.•ARTICLE•Science•2019

    The time is now For decades, scientists have been raising calls for societal changes that will reduce our impacts on nature. Though much conservation has occurred, our natural environment continues to decline under the weight of our consumption. Humanity depends directly on the output of nature; thus, this decline will affect us, just as it does the other species with which we share this world. Díaz et al. review the findings of the largest asses…

  • Inferring CO 2 fertilization effect based on global monitoring land-atmosphere exchange with a theoretical model

    Open Access•Masahito Ueyama, Kazuhito Ichii et al.•ARTICLE•Environmental Research Letters•2020

    Rising atmospheric CO 2 concentration ([CO 2 ]) enhances photosynthesis and reduces transpiration at the leaf, ecosystem, and global scale via the CO 2 fertilization effect. The CO 2 fertilization effect is among the most important processes for predicting the terrestrial carbon budget and future climate, yet it has been elusive to quantify. For evaluating the CO 2 fertilization effect on land photosynthesis and transpiration, we developed a tech…

  • Contrasting 20-year trends in NDVI at two Siberian larch forests with and without multiyear waterlogging-induced disturbances

    Open Access•Hirohiko Nagano, Ayumi Kotani et al.•ARTICLE•Environmental Research Letters•2022

    The fate of a boreal forest may depend on the trend in its normalized difference vegetation index (NDVI), such as whether the NDVI has been increasing significantly over the past few decades. In this study, we analyzed the responses of two Siberian larch forests at Spasskaya Pad and Elgeeii in eastern Siberia to various waterlogging-induced disturbances, using satellite-based NDVI and meteorological data for the 2000–2019 period. The forest at Sp…

  • Exploring the optimal geometry of satellites Himawari-8/9 to monitor seasonal variation in vegetation dynamics across Southeast Asia

    Open Access•Misaki Hase, Kazuhito Ichii et al.•ARTICLE•Environmental Research Letters•2025

    Dense and widespread tropical rainforests across Southeast Asia are crucial for the global carbon cycle. A new generation geostationary satellite, Himawari-8/9, and onboard sensor, the Advanced Himawari Imager (AHI), enables hyper-temporal vegetation monitoring in this cloud-prone region. However, AHI’s fixed viewing geometry varies spatially, making consistent vegetation monitoring challenging across a wide area at a seasonal scale. This study e…

Biology (4 obras) · Ecology (4 obras) · Environmental Science (4 obras) · Atmospheric and Environmental Gas Dynamics (3 obras) · Atmospheric sciences (3 obras) · Carbon cycle (3 obras) · Climate change (3 obras) · Climatology (3 obras) · Ecosystem (3 obras) · Vegetation (pathology (3 obras)

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