Living biomass of fallow areas under a REDD+ project in mountainous terrain of Northern Laos
| Autor: | Takashi Nanaumi, Tomoko Furuta, Masahiro Amano, Motoshi Hiratsuka, Hayato Tsuzuki, Kouhei Niitsuma, Kei Suzuki, Chanhsamone Phongoudome |
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| Rok vydání: | 2017 |
| Předmět: |
Biomass (ecology)
010504 meteorology & atmospheric sciences Agroforestry Tree allometry Forestry 010501 environmental sciences Carbon sequestration 01 natural sciences Shifting cultivation Mountainous terrain Deforestation Greenhouse gas Environmental science Satellite imagery 0105 earth and related environmental sciences |
| Zdroj: | Journal of Forest Research. 23:56-63 |
| ISSN: | 1610-7403 1341-6979 |
| Popis: | There has been an expansion of the fallow areas in the mountainous terrain of Northern Laos, resulting in a significant effect on greenhouse gas emissions in the region. This study estimated living biomass of variously aged fallow areas (4–35 years old) in mountainous terrain. The living biomass of study sites, which was estimated by applying original allometric equations in each plant component, ranged from 49.4 to 390.1 Mg ha−1. Using individual biomass data, we then developed a growth model based on a correlation between stand age (years after slash-and-burn) and living biomass in fallow areas >20 years old. The developed growth model was well fitted by a theoretical formula of Mitscherlich (Living biomass = 372.9 × [1 – 1.117 × exp(−0.05556 × stand age)]) (R2 = 0.670). In addition, the area of each aged fallow area was estimated by analysis of time series of satellite imagery and change-detection analysis to detect past fire events (slash-and-burn). All of the living biomass of the fallow area... |
| Databáze: | OpenAIRE |
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