Estimating Carbon Sequestration by Sugi (Cryptomeria japonica) Plantations According to Site and Management Conditions(<Special Issue>Multipurpose Forest Management)

スポンサーリンク

概要

• 論文の詳細を見る

• Carbon sequestration by plantation forests depends on the site conditions and silvicultural system used. This study estimated the spatial distribution of carbon sequestration by sugi (Cryptomeria japonica) plantations in a study area according to site quality and thinning regime. The study area was the University of Tokyo Forest in Chiba, which is located on the southern Boso Peninsula, Japan. Site index curves were created from height measurements in sugi plantation experimental plots. Sixty-five sampling points were located in sugi plantations, and the heights of three to five dominant trees around each sample point were measured. The site index was calculated for each sampling point, and the average height at 60 years of age was estimated from the average height at each sampling point using the site index curves. Site factors were calculated from a digital elevation model (DEM) in a geographic information system (GIS). Discriminant functions were developed from five site factors: slope, shaded relief, distance from a ridge, plan curvature, and the wetness index. The correctness rate was 60%. In addition, stand growth was predicted for each site quality using LYCS ver. 2.32 under low thinning at frequencies of 1, 2, 3, and 5 times. Carbon sequestration was estimated from the growth of stand volume multiplied by the basic density, biomass expansion factors, ratio of total biomass to aboveground biomass, and carbon fraction. The estimated carbon storage and sequestration for the study area were mapped using GIS according to the site quality estimated from the five site factors and specified thinning regimes. The average carbon storage per hectare peaked at a thinning frequency of one. Thinning during the young stage increased carbon storage, although frequent and strong thinning regimes decreased carbon storage. The average carbon sequestration per hectare increased with thinning frequency because more frequent thinning leads to faster growth just after thinning in more stands. These maps enabled us to understand the change in carbon storage and sequestration over the study area according to the chosen silvicultural system.

著者

• Tatsuhara Satoshi

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo

• Asada Yoko

  Graduate School Of Agricultural And Life Sciences The University Of Tokyo:(present Office)mitsubishi

関連論文

• Modeling Survival and Destruction of Teak Plantations in Java, Indonesia
• Predicting the spatial distribution of the abundance of Siebold's beech in a montane cool-temperate region based on environmental factors
• Estimation of Growth Parameters using the Local Yield Table Construction System for Planted Forests throughout Japan
• Predicting the spatial distribution of major species composition in secondary hardwood forests on Mt. Gozu, central Japan, based on environmental factors
• Development and Application of an Algorithm to Calculate Cross-cutting Patterns to Maximize Stumpage Price based on Timber Market and Stand Conditions : A Case Study of Sugi Plantations in Gunma Prefecture, Japan
• Estimating Canopy Information in Cryptomeria japonica and Chamaecyparis obtusa Stands using Airborne LiDAR, Data
• Estimating Carbon Sequestration by Sugi (Cryptomeria japonica) Plantations According to Site and Management Conditions(Multipurpose Forest Management)
• Applicability of Kriging to Predict Spatial Distribution of Carbon Stocks of Acacia mangium Plantations
• Empirical Models for Estimating the Stand Biomass of Teak Plantations in Java, Indonesia(Multipurpose Forest Management)

スポンサーリンク