English version
Title: Insight into the aboveground biomass factors in Lanjenchi plot
There is a growing need to
understand, and ultimately manage, carbon storage by forest ecosystems. To
explore what kind of factors will regulate carbon storage as estimated from
aboveground biomass in a spatially heterogeneous plot, we utilized four time
cesus data from Lanjenshi Forest Dynamic Plot, which situated in southern
Taiwan and was greatly affected by strong northeast monsoon winds in winter
season. Every tree was identified, measured, tagged and mapped. Allometric
equations were used to estimate the aboveground biomass of each tree and
examine the relationship between plot-level aboveground biomass and factors
including topographic, biotic and climatic data.
The results show that the
aboveground biomass has a significant difference between 1991 and 2013. The
leeward habitats have more aboveground biomass than windward habitats. We
identified the aboveground biomass was high in high exposure value, flat
convexity, high exposure value, and high stem density. Temperature and the
heavy precipitation days are also correlate to the change of the aboveground
biomass. The future frame work is going to know whether the typhoon or
North-East monsoon wind is the main factors that will affect the aboveground
biomass accumulation.
key: Bayesian hierarchical modelling, carbon cycle, forest dynamic, Gibbs
sampling
中文版本
題目：瞭解南仁山欖仁溪樣區地上部生物量的影響因子
全球氣候變遷下，瞭解森林生態系的碳含量，相當重要。本研究利用南仁山欖仁溪樣區4次調查資料進行地上部生物量計算並分析地形、生物以及氣候因子來檢視在長期東北季風以及颱風的干擾下，何種因子劇烈影響南仁山欖仁溪樣區地上部生物量的累積。由本研究結果顯示，1991-2013年的地上不生物量呈現顯著上升，背風生育地的地上部生物量較迎風坡高。造成該原因主要歸咎於該樣區的地形凹凸度、暴露度以及植株密度。溫度以及強降雨次數則與地上部生物量的變化相關，未來則納入東北季風以及颱風對該樣區的影響力以探討該因子是否會在全球氣候的變遷下，持續地影響樣區內的地上部生物量累積。
關鍵字: 貝氏模型、碳循環、森林動態、吉布斯抽樣
The seminar will be held in the room A02-433 at the Department of forestry and nature resources, National Chaiyi University, Chaiyi city, Taiwan.
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