Modeling forest above-ground biomass using freely available satellite and multisource datasets

A Hojo, R Avtar, T Nakaji, T Tadono, K Takagi - Ecological Informatics, 2023 - Elsevier
Achieving the 2 C global warming target will require all stakeholders, from local to global, to
accelerate carbon reduction plans. To properly estimate carbon amounts sequestered and …

Estimation of six leaf traits of East Asian forest tree species by leaf spectroscopy and partial least square regression

T Nakaji, H Oguma, M Nakamura, P Kachina… - Remote Sensing of …, 2019 - Elsevier
To elucidate the potential of hyperspectral remote sensing for estimating the functional leaf
traits in East Asian forests, we investigated the utility of leaf spectroscopy and partial least …

Utility of spectral vegetation indices for estimation of light conversion efficiency in coniferous forests in Japan

T Nakaji, R Ide, K Takagi, Y Kosugi, S Ohkubo… - Agricultural and forest …, 2008 - Elsevier
To clarify the utility of spectral vegetation indices (VIs) for estimating light conversion efficiency
(ɛ) in Japanese coniferous forests, we investigated the relationships between six VIs (…

Effects of high nitrogen load on growth, photosynthesis and nutrient status of Cryptomeria japonica and Pinus densiflora seedlings

T Nakaji, M Fukami, Y Dokiya, T Izuta - Trees, 2001 - Springer
To evaluate the sensitivity of Japanese cedar (Cryptomeria japonica D. Don) and Japanese
red pine (Pinus densiflora Sieb. et Zucc.) to high N deposition, 1-year-old seedlings were …

Advantages of visible-band spectral remote sensing at both satellite and near-surface scales for monitoring the seasonal dynamics of GPP in a Japanese larch forest

R Ide, T Nakaji, T Motohka, H Oguma - Journal of Agricultural …, 2011 - jstage.jst.go.jp
Remotely sensed vegetation indices such as the normalized difference vegetation index (NDVI)
or enhanced vegetation index (EVI) have been used to scale up flux-based gross …

Interpreting canopy development and physiology using a European phenology camera network at flux sites

…, A Porcar-Castell, M Galvagno, T Nakaji… - …, 2015 - bg.copernicus.org
Plant phenological development is orchestrated through subtle changes in photoperiod,
temperature, soil moisture and nutrient availability. Presently, the exact timing of plant …

[PDF][PDF] Photosynthetic response of Pines densiflora seedlings to high nitrogen load

T Nakaji, S Takenaga, M Kuroha… - Environmental Sciences, 2002 - researchgate.net
Nakaji et al. … Nakaji et al. 277 … Tatsuro Hirose (Hokuriku National Agricultural
Experiment Station) for biochemical analyses, and Dr. Takuya Kobayashi (Central …

Responses of soil, heterotrophic, and autotrophic respiration to experimental open-field soil warming in a cool-temperate deciduous forest

NJ Noh, M Kuribayashi, TM Saitoh, T Nakaji… - Ecosystems, 2016 - Springer
How global warming will affect soil respiration (R S ) and its source components is poorly
understood despite its importance for accurate prediction of global carbon (C) cycles. We …

Unveiling the transferability of PLSR models for leaf trait estimation: lessons from a comprehensive analysis with a novel global dataset

…, X Yang, PA Townsend, H Dashti, T Nakaji… - New …, 2024 - Wiley Online Library
Leaf traits are essential for understanding many physiological and ecological processes.
Partial least squares regression (PLSR) models with leaf spectroscopy are widely applied for …

8 million phenological and sky images from 29 ecosystems from the Arctic to the tropics: the Phenological Eyes Network

…, H Muraoka, H Nagano, T Nakai, T Nakaji… - Ecological …, 2018 - Wiley Online Library
We report long‐term continuous phenological and sky images taken by time‐lapse cameras
through the Phenological Eyes Network ( http://www.pheno‐eye.org . Accessed 29 May …