Abstract
1.Climate plays a vital role in shaping the distribution of forest and plant species. Some authors have reported that climate, especially the temperature and seasonal partitioning of rainfall, is significantly correlated with plant species' occurrence, growth, mating, and reproduction. Taiwan is a high-mountain island with substantial forest coverage. Strategies on adaptation and mitigation for the impact of climate change on forestry, both natural habitats and anthropogenic plantations, are essential for forest management in the coming decades.2.Statistical models are essential for selecting the optimal habitats for forest plantations and predicting their potential production. In the first part of this study, we incorporate the 5-year recensus data of permanent forest plots across the whole island of Taiwan with high-resolution climate data from TCCIP. The data is used to establish the "climate-diameter growth" model for three economic timber species, including Cinnamomum camphora, Taiwania cryptomerioides, and Cunninghamia konishii. The model can be applied to generate the map of potential diameter growth for the target species around the whole island of Taiwan. It can also estimate suitable habitats and optimal timber productions under present and future climate conditions. Outcomes of this study could be adaptative decision-making equipment in forest management and mitigating the impact of climate change on forestry.3.As alpine plant phenology is highly sensitive to climate change, Taiwan's sub-alpine and above regions have become an important key habitat for monitoring climate change trends and formulating conservation and adjustment strategies. In the second part of this study, the phenological survey of Taiwan fir and Yushan rhododendron was conducted for subalpine forest ecosystem habitats that are vulnerable to climate change, combined with the weather data of the Central Meteorological Bureau and the TCCIP climate change module, to construct a phenological model of subalpine key habitats.