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B-6.2.2Evaluation of Carbon Sequestration with Forest Management

[Contact Person]

SAKAI Hisao
Director
Kiso Experiment Station
Forestry and Forest Products Research Institute
5473 Kisofukushima-machi, Kiso-Gun, Nagano 397, Japan
Tel: +81-264-22-3203 Fax: +81-264-22-2542
E-mail sakai03@ffpri.affrc.go.jp

Total Budget for FY1996-FY1998

7,461,000 Yen (FY 1996; 2,481,000 Yen)

[Key Words]

Larix kaempferi, Abies veichii, Tsuga diversifolia, subalpine zone, soil carbon storage (sequestration), forest management

Abstract:

To clarify the reality of the soil carbon storage of natural forest in the subalpine zone (Abies veichii and Tsuga diversifolia) and in there the influence which reforestation (using Larix kaempferi) has given to the soil carbon storage (sequestration), this study was done in Makioka Town, Yamanashi Pref., in central Japan. The investigating elevation region is a range from 2000 to 2200. The basement rock consist of granite, and three of four soil profiles in this investigation were Dry Podzolic soils, one was a Dark brown forest soils according to the Classification of Forest Soil in Japan (1975)²⁾. In an Abies veichii stand, a simple soil survey was done in 30 points, as a result it has been cleared that the soil carbon storage ranged from 157 to 308 tC/ha according to the topographic condition. The soil carbon storage showed the tendency to be large in the place of residual soil. Then, the terrain condition was limited to two place of residual soil and creep soil, in addition, the soil type was arranged in PDII in the place of residual soil, and in those places the soils were compared between Larix stand and Abies-Tsuga (or Abies) stand. Larix kaempferi were reforested 30-40 years ago after the felling of the natural forest. A remarkable difference was seen in the carbon storage of the upper part of illuvial horizon (B horizon) between both forest stands, the soil carbon storage of the Larix stand was less in comparison to Abies-Tsuga stand. There was a problem that the secular variation in the same forest stand was not investigated in this study, however, the tendency of which the soil carbon storage in Larix stand was less compared with Abies-Tsuga stand was clear, and it was thought that the soil carbon storage in Larix stand was a decrease in 50 tC/ha scale because of the Larix silviculture after the felling of the natural forest.