17:15 〜 19:15
[ACG39-P02] Estimating Forest Carbon Sequestration in the Mountainous Region in Central Taiwan Using a Terrestrial Ecosystem Model
キーワード：Process-based model, Carbon sequestration, Forest management
Forests are a crucial component of the global carbon cycle and annual carbon budget, with an estimated net global forest carbon sink ranging from 0.3 to 1.9 Gt C /yr. Accurately estimating gross primary productivity (GPP) across various spatial and temporal scales and for different vegetation types is essential for understanding ecosystem responses to increasing atmospheric carbon dioxide levels and improving carbon cycle modeling. GPP represents the total amount of carbon dioxide fixed by plants through photosynthesis, reflecting an ecosystem’s carbon sequestration capacity. It plays a significant role in understanding the global carbon budget and the terrestrial biosphere’s response to climate change. Additionally, GPP serves as a key indicator of the carbon absorption capacity of terrestrial ecosystems, which is crucial for achieving carbon neutrality. It is recognized as an important metric for the Sustainable Development Goals (SDGs), including Goal 2 (Zero Hunger), Goal 15 (Life on Land), and Goal 13 (Climate Action).
This study focuses on the Jhuoshuei River Basin in central Taiwan. By collecting climate data (e.g., precipitation, temperature) and vegetation distribution characteristics of the basin, the terrestrial ecosystem model Biome-BGC was used for simulations. Vegetation parameters were adjusted according to the basin's forest types to estimate GPP under different forest covers. The simulation results were compared with MODIS satellite monitoring data collected by Taiwan’s forestry department, yielding NSE values of approximately 0.89 to 0.9. The model demonstrated high consistency with MODIS data in terms of spatial distribution and seasonal variation, verifying its accuracy. According to Taiwan's Fourth National Forest Resources Survey, Taiwan's forest coverage rate is 60.7%, twice the global average. Forests in the Jhuoshuei River Basin account for approximately 11% of Taiwan’s total forest area, with bamboo forests being the dominant type. Bamboo forests are a significant forest type in subtropical and tropical regions, covering 0.8% of the world's total forest area in 2010. Their prominence is largely due to bamboo's unique asexual regeneration characteristics and high economic value. In Taiwan's agricultural sector net-zero emission strategy, which consists of "emission reduction," "carbon sequestration enhancement," and "agricultural green energy," forestry plays a crucial role in the carbon sequestration enhancement component, primarily through afforestation and improved forest management.
This study utilizes the Biome-BGC ecosystem model to simulate GPP in the Jhuoshuei River Basin, analyzing its potential for increasing carbon sequestration and evaluating forestry policy benefits. It is recommended that policy support be integrated with sustainable forestry management to optimize carbon sequestration measures. Active implementation of forest management, afforestation, and reforestation policies is crucial. In the future, applying the "right tree in the right place" principle, transforming currently unstocked forest land into bamboo forests or forested areas, is expected to increase forest coverage by approximately 4,492 hectares, thereby enhancing carbon sequestration capacity. This would not only help mitigate climate change impacts but also provide greater ecosystem services while promoting the sustainable development of local economies.
This study focuses on the Jhuoshuei River Basin in central Taiwan. By collecting climate data (e.g., precipitation, temperature) and vegetation distribution characteristics of the basin, the terrestrial ecosystem model Biome-BGC was used for simulations. Vegetation parameters were adjusted according to the basin's forest types to estimate GPP under different forest covers. The simulation results were compared with MODIS satellite monitoring data collected by Taiwan’s forestry department, yielding NSE values of approximately 0.89 to 0.9. The model demonstrated high consistency with MODIS data in terms of spatial distribution and seasonal variation, verifying its accuracy. According to Taiwan's Fourth National Forest Resources Survey, Taiwan's forest coverage rate is 60.7%, twice the global average. Forests in the Jhuoshuei River Basin account for approximately 11% of Taiwan’s total forest area, with bamboo forests being the dominant type. Bamboo forests are a significant forest type in subtropical and tropical regions, covering 0.8% of the world's total forest area in 2010. Their prominence is largely due to bamboo's unique asexual regeneration characteristics and high economic value. In Taiwan's agricultural sector net-zero emission strategy, which consists of "emission reduction," "carbon sequestration enhancement," and "agricultural green energy," forestry plays a crucial role in the carbon sequestration enhancement component, primarily through afforestation and improved forest management.
This study utilizes the Biome-BGC ecosystem model to simulate GPP in the Jhuoshuei River Basin, analyzing its potential for increasing carbon sequestration and evaluating forestry policy benefits. It is recommended that policy support be integrated with sustainable forestry management to optimize carbon sequestration measures. Active implementation of forest management, afforestation, and reforestation policies is crucial. In the future, applying the "right tree in the right place" principle, transforming currently unstocked forest land into bamboo forests or forested areas, is expected to increase forest coverage by approximately 4,492 hectares, thereby enhancing carbon sequestration capacity. This would not only help mitigate climate change impacts but also provide greater ecosystem services while promoting the sustainable development of local economies.