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| 題 名 | 以MODIS時序資料分析臺灣植被物候空間分布=Spatial Patterns of Vegetation Phenology Based on MODIS Time-series Data in Taiwan Applying TIMESAT |
|---|---|
| 作 者 | 張仲德; 黃倬英; | 書刊名 | 航測及遙測學刊 |
| 卷 期 | 20:1 2016.01[民105.01] |
| 頁 次 | 頁1-14 |
| 分類號 | 374 |
| 關鍵詞 | 中解析度成像光譜儀; 物候分析; 氣候變異; 聖嬰現象; MODIS; The Moderate Resolution Imaging Spectroradiometer; Phenology analysis; Climatic anomaly; ENSO; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 地表植被物候反應生態系對於氣候變化的作用,本研究利用2001至2010年間由MODIS (the Moderate Resolution Imaging Spectroradiometer)波段反射率資料演算得到的月份光合作用植物(PV, photosynthetically active vegetation)資料,透過TIMESAT軟體分析台灣地區地表物候空間分布的特性,包括生長季開始時間(onset)、生長季結束時間(offset)及生長季長度(length of the growing season)。結果顯示台灣地區不同年間生長季開始時間與生長季結束時間(r = 0.67, p = 0.035)及生長季長度(r = 0.77, p = 0.009)具有顯著關係;其中生長季開始時間的延遲受到聖嬰現象(ENSO, El Niño-Southern Oscillation)影響的春季乾旱所控制,並對生態系造成負面衝擊。TIMESAT是相當穩定的物候分析工具,有助於釐清氣候變化及環境擾動因素對植物生長反應的影響。 |
| 英文摘要 | Land surface phenology reflects the responses of a terrestrial ecosystem to climate change. In this study, we used monthly PV (photosynthetically active vegetation) derived from MODIS (the Moderate Resolution Imaging Spectroradiometer) reflectance data between 2001 and 2010 to delineate the land surface phenology. The phenological metrics including onset, offset, and the length of the growing season were obtained from the phenological analysis toolbox TIMESAT. Results indicated that the interannual variability of onset time was significantly correlated to offset time (r = 0.67, p = 0.035) and length of the growing season (r = -0.77, p = 0.009). In addition, the shortage of spring rainfall was influenced by ENSO events and resulted in significant delayed on vegetation onset time and cause dramatic impacts on the ecosystem. TIMESAT is a robust phenological analysis tool, which can facilitate our understanding of the vegetation responses and development associated with climate change and environmental disturbances. |
本系統中英文摘要資訊取自各篇刊載內容。