Effects of seasonal and interannual variations in leaf photosynthesis and canopy leaf area index on gross primary production of a cool-temperate deciduous broadleaf forest in Takayama, Japan

Hiroyuki Muraoka, Nobuko Saigusa, Kenlo N. Nasahara, Hibiki Noda, Jun Yoshino, Taku M. Saitoh, Shin Nagai, Shohei Murayama, Hiroshi Koizumi

    Research output: Contribution to journalArticle

    53 Citations (Scopus)

    Abstract

    Revealing the seasonal and interannual variations in forest canopy photosynthesis is a critical issue in understanding the ecological mechanisms underlying the dynamics of carbon dioxide exchange between the atmosphere and deciduous forests. This study examined the effects of temporal variations of canopy leaf area index (LAI) and leaf photosynthetic capacity [the maximum velocity of carboxylation (Vcmax)] on gross primary production (GPP) of a cool-temperate deciduous broadleaf forest for 5 years in Takayama AsiaFlux site, central Japan. We made two estimations to examine the effects of canopy properties on GPP; one is to incorporate the in situ observation of Vcmax and LAI throughout the growing season, and another considers seasonality of LAI but constantly high Vcmax. The simulations indicated that variation in Vcmax and LAI, especially in the leaf expansion period, had remarkable effects on GPP, and if Vcmax was assumed constant GPP will be overestimated by 15%. Monthly examination of air temperature, radiation, LAI and GPP suggested that spring temperature could affect canopy phenology, and also that GPP in summer was determined mainly by incoming radiation. However, the consequences among these factors responsible for interannual changes of GPP are not straightforward since leaf expansion and senescence patterns and summer meteorological conditions influence GPP independently. This simulation based on in situ ecophysiological research suggests the importance of intensive consideration and understanding of the phenology of leaf photosynthetic capacity and LAI to analyze and predict carbon fixation in forest ecosystems.

    Original languageEnglish
    Pages (from-to)563-576
    Number of pages14
    JournalJournal of Plant Research
    Volume123
    Issue number4
    DOIs
    Publication statusPublished - 2010

    Fingerprint

    leaf area index
    primary productivity
    photosynthesis
    canopy
    Japan
    leaves
    leaf development
    phenology
    Calvin cycle
    summer
    carboxylation
    forest canopy
    deciduous forests
    forest ecosystems
    temporal variation
    air temperature
    carbon dioxide
    growing season
    temperature

    Keywords

    • AsiaFlux Takayama site
    • Canopy and leaf photosynthesis
    • Deciduous broadleaf forest
    • Forest ecosystem carbon cycle
    • Phenology

    ASJC Scopus subject areas

    • Plant Science

    Cite this

    Effects of seasonal and interannual variations in leaf photosynthesis and canopy leaf area index on gross primary production of a cool-temperate deciduous broadleaf forest in Takayama, Japan. / Muraoka, Hiroyuki; Saigusa, Nobuko; Nasahara, Kenlo N.; Noda, Hibiki; Yoshino, Jun; Saitoh, Taku M.; Nagai, Shin; Murayama, Shohei; Koizumi, Hiroshi.

    In: Journal of Plant Research, Vol. 123, No. 4, 2010, p. 563-576.

    Research output: Contribution to journalArticle

    Muraoka, Hiroyuki ; Saigusa, Nobuko ; Nasahara, Kenlo N. ; Noda, Hibiki ; Yoshino, Jun ; Saitoh, Taku M. ; Nagai, Shin ; Murayama, Shohei ; Koizumi, Hiroshi. / Effects of seasonal and interannual variations in leaf photosynthesis and canopy leaf area index on gross primary production of a cool-temperate deciduous broadleaf forest in Takayama, Japan. In: Journal of Plant Research. 2010 ; Vol. 123, No. 4. pp. 563-576.
    @article{ce7e5114a421432b8eab18fdb447abc4,
    title = "Effects of seasonal and interannual variations in leaf photosynthesis and canopy leaf area index on gross primary production of a cool-temperate deciduous broadleaf forest in Takayama, Japan",
    abstract = "Revealing the seasonal and interannual variations in forest canopy photosynthesis is a critical issue in understanding the ecological mechanisms underlying the dynamics of carbon dioxide exchange between the atmosphere and deciduous forests. This study examined the effects of temporal variations of canopy leaf area index (LAI) and leaf photosynthetic capacity [the maximum velocity of carboxylation (Vcmax)] on gross primary production (GPP) of a cool-temperate deciduous broadleaf forest for 5 years in Takayama AsiaFlux site, central Japan. We made two estimations to examine the effects of canopy properties on GPP; one is to incorporate the in situ observation of Vcmax and LAI throughout the growing season, and another considers seasonality of LAI but constantly high Vcmax. The simulations indicated that variation in Vcmax and LAI, especially in the leaf expansion period, had remarkable effects on GPP, and if Vcmax was assumed constant GPP will be overestimated by 15{\%}. Monthly examination of air temperature, radiation, LAI and GPP suggested that spring temperature could affect canopy phenology, and also that GPP in summer was determined mainly by incoming radiation. However, the consequences among these factors responsible for interannual changes of GPP are not straightforward since leaf expansion and senescence patterns and summer meteorological conditions influence GPP independently. This simulation based on in situ ecophysiological research suggests the importance of intensive consideration and understanding of the phenology of leaf photosynthetic capacity and LAI to analyze and predict carbon fixation in forest ecosystems.",
    keywords = "AsiaFlux Takayama site, Canopy and leaf photosynthesis, Deciduous broadleaf forest, Forest ecosystem carbon cycle, Phenology",
    author = "Hiroyuki Muraoka and Nobuko Saigusa and Nasahara, {Kenlo N.} and Hibiki Noda and Jun Yoshino and Saitoh, {Taku M.} and Shin Nagai and Shohei Murayama and Hiroshi Koizumi",
    year = "2010",
    doi = "10.1007/s10265-009-0270-4",
    language = "English",
    volume = "123",
    pages = "563--576",
    journal = "Journal of Plant Research",
    issn = "0918-9440",
    publisher = "Springer Japan",
    number = "4",

    }

    TY - JOUR

    T1 - Effects of seasonal and interannual variations in leaf photosynthesis and canopy leaf area index on gross primary production of a cool-temperate deciduous broadleaf forest in Takayama, Japan

    AU - Muraoka, Hiroyuki

    AU - Saigusa, Nobuko

    AU - Nasahara, Kenlo N.

    AU - Noda, Hibiki

    AU - Yoshino, Jun

    AU - Saitoh, Taku M.

    AU - Nagai, Shin

    AU - Murayama, Shohei

    AU - Koizumi, Hiroshi

    PY - 2010

    Y1 - 2010

    N2 - Revealing the seasonal and interannual variations in forest canopy photosynthesis is a critical issue in understanding the ecological mechanisms underlying the dynamics of carbon dioxide exchange between the atmosphere and deciduous forests. This study examined the effects of temporal variations of canopy leaf area index (LAI) and leaf photosynthetic capacity [the maximum velocity of carboxylation (Vcmax)] on gross primary production (GPP) of a cool-temperate deciduous broadleaf forest for 5 years in Takayama AsiaFlux site, central Japan. We made two estimations to examine the effects of canopy properties on GPP; one is to incorporate the in situ observation of Vcmax and LAI throughout the growing season, and another considers seasonality of LAI but constantly high Vcmax. The simulations indicated that variation in Vcmax and LAI, especially in the leaf expansion period, had remarkable effects on GPP, and if Vcmax was assumed constant GPP will be overestimated by 15%. Monthly examination of air temperature, radiation, LAI and GPP suggested that spring temperature could affect canopy phenology, and also that GPP in summer was determined mainly by incoming radiation. However, the consequences among these factors responsible for interannual changes of GPP are not straightforward since leaf expansion and senescence patterns and summer meteorological conditions influence GPP independently. This simulation based on in situ ecophysiological research suggests the importance of intensive consideration and understanding of the phenology of leaf photosynthetic capacity and LAI to analyze and predict carbon fixation in forest ecosystems.

    AB - Revealing the seasonal and interannual variations in forest canopy photosynthesis is a critical issue in understanding the ecological mechanisms underlying the dynamics of carbon dioxide exchange between the atmosphere and deciduous forests. This study examined the effects of temporal variations of canopy leaf area index (LAI) and leaf photosynthetic capacity [the maximum velocity of carboxylation (Vcmax)] on gross primary production (GPP) of a cool-temperate deciduous broadleaf forest for 5 years in Takayama AsiaFlux site, central Japan. We made two estimations to examine the effects of canopy properties on GPP; one is to incorporate the in situ observation of Vcmax and LAI throughout the growing season, and another considers seasonality of LAI but constantly high Vcmax. The simulations indicated that variation in Vcmax and LAI, especially in the leaf expansion period, had remarkable effects on GPP, and if Vcmax was assumed constant GPP will be overestimated by 15%. Monthly examination of air temperature, radiation, LAI and GPP suggested that spring temperature could affect canopy phenology, and also that GPP in summer was determined mainly by incoming radiation. However, the consequences among these factors responsible for interannual changes of GPP are not straightforward since leaf expansion and senescence patterns and summer meteorological conditions influence GPP independently. This simulation based on in situ ecophysiological research suggests the importance of intensive consideration and understanding of the phenology of leaf photosynthetic capacity and LAI to analyze and predict carbon fixation in forest ecosystems.

    KW - AsiaFlux Takayama site

    KW - Canopy and leaf photosynthesis

    KW - Deciduous broadleaf forest

    KW - Forest ecosystem carbon cycle

    KW - Phenology

    UR - http://www.scopus.com/inward/record.url?scp=77953962837&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=77953962837&partnerID=8YFLogxK

    U2 - 10.1007/s10265-009-0270-4

    DO - 10.1007/s10265-009-0270-4

    M3 - Article

    C2 - 20020173

    AN - SCOPUS:77953962837

    VL - 123

    SP - 563

    EP - 576

    JO - Journal of Plant Research

    JF - Journal of Plant Research

    SN - 0918-9440

    IS - 4

    ER -