Wooden-building Life Cycle Carbon Footprint and Forestry Carbon Sink Assessment
Abstract
It might be a good way to build the house by cross-laminated-timber (CLT), a latest wooden materials, because of the carbon storage in the wood. The carbon substitution of wooden products can store carbon in the wood, and let the land be released for planting new sapling to absorb more carbon. On the other hand, building constructions can also reduce the Greenhouse gas emission by reducing the reinforced concrete (RC), a high-energy consumption material.
In order to show the effect of this carbon substitution, in this research, we calculate the Greenhouse gas emissions of wooden building and the functionally equivalent RC-building in Taiwan by life-cycle assessment (LCA), and simulate the forestry growth by Individual-based Model (IBM) and allometric equation. It reduces 232137 kgCO2e emission in life cycle, and needs 85 m3 wood by using CLT instead of RC in a four- floor building. We simulate the logging and non-logging in one hectare showing the different productivity in forest stands (fig 1). Then we can combine the forest carbon sink and building LCA, and understand the total effect of carbon substitution of CLT-building in one hundred years time-series. More details about this forest IBM model, we assume there are 3000 trees in one hectare, and classified as 10 super individuals(SI) with similar feature. We use real data to assume the growth rate V growth = 8.91 × (DBH)2.90, and the △DBH can be defined by DBH2= (0.051×DBH12.90+DBH12.3473)0.426 . The distribution of tree is depend on the equation Y diameter = -0.0045 X number/ha +26.063, by observed data. After setting the oppression between the 10 SI, we can simulate 100 years time-series.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFMGC51F0854L
- Keywords:
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- 1632 Land cover change;
- GLOBAL CHANGEDE: 1640 Remote sensing;
- GLOBAL CHANGEDE: 6309 Decision making under uncertainty;
- POLICY SCIENCESDE: 6610 Funding;
- PUBLIC ISSUES