Estimation of annual carbon budget of forest ecoxyxtems at meso-scale.

中观尺度森林生态系统年度碳收支估算。

基本信息

批准号：
14580559
负责人：
OHTSUKA Toshiyuki
金额：
$ 1.6万
依托单位：
IBARAKI UNIVERSITY (2003)Yamanashi Institute of Environmental Sciences (2002)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580559/
关键词：
Forest ecosystem Net ecosystem production Remote sensing Mesa-scale Mt. Fuji Ken-marubi pine forest Soil respiration CO_2シンク能純一次生産量土壌呼吸量メソスケールモデル

项目摘要

Annual carbon budget of forest ecosystems at mesa-scale was estimated using ecological investigation and satellite remote sensing data. Terrestrial ecosystems on the out skirts of Mt. Fuji which have no complex topography and have various vegetation types on lava flows, were selected to the research area of the meso-scale estimation of carbon budget., Five forest ecosystems were classified by satellite, remote sensing data : pine forests, temperate conifer forests (cypress and hemlock), temperate deciduous forests, larch plantations, subarctic conifer forests. Soil respiration (SR) of the three of these five forest ecosystems was monthly measured, and net primary production (NPP) of a pine forest was also measured using ecological investigation. Annual carbon budget of forest ecosystem was estimated by net ecosystem production (NEP) : NEP = NPP -(SR-RR). It was assumed that root respiration (RR) contributed 4610 of soil respiration (SR) in forest ecosystems referred to the other ecological investigations. NPP at each ecosystem at mesa-scale was estimated by satellite NDVI data referred to ecological NPP data in the pine forest. To estimate SR at each ecosystem at mesa-scale, we constructed the 1 model of SR as function of monthly mean temperature of climatological station. As a result, total NPP in forest ecosystems of the research area (30877 ha) was 159 (10^3 t C yr^<-1>), and total SR was 275 (10^3 t C yr^<-1>). Total annual carbon budget in forest ecosystems of the research area at mesa-scale was 11 (10^3 t C yr^<-1>)

使用生态调查和卫星遥感数据估算了梅萨规模的森林生态系统的年度碳预算。 Terrestrial ecosystems on the out skirts of Mt. Fuji which have no complex topography and have various vegetation types on lava flows, were selected to the research area of the meso-scale estimation of carbon budget., Five forest ecosystems were classified by satellite, remote sensing data : pine forests, temperate conifer forests (cypress and hemlock), temperate deciduous forests, larch plantations,亚北极针叶树林。每月测量这五个森林生态系统中三个的土壤呼吸（SR），并使用生态研究测量了松树林的净初级生产（NPP）。森林生态系统的年度碳预算是通过净生态系统生产（NEP）估算的：NEP = NPP-（SR -RR）。假定根呼吸（RR）在提到其他生态研究的森林生态系统中贡献了4610个土壤呼吸（SR）。通过卫星NDVI数据估算了梅萨尺度的每个生态系统的NPP，这些数据称为松树林中的生态NPP数据。为了估算梅萨尺度每个生态系统的SR，我们构建了SR的1模型，作为气候站的月平均温度的函数。结果，研究区域的森林生态系统（30877公顷）的总NPP为159（10^3 t c yr^<-1>），总SR为275（10^3 T C yr^<-1>）。梅萨级研究区域的森林生态系统中的年度碳预算为11（10^3 t c yr^<-1>）