台灣中部塔塔加地區台灣雲杉樹輪氣候學研究過去245年氣溫與降雨量趨勢

Temperature and Precipitation Variations during the Last 245 Years as in Ta-Ta-Chia Area of Central Taiwan Dendroclimatic Study of from Taiwan Spruce (Picea Morrisonicola) Tree-Ring Character Values

詹明勳(Ming-Hsun Chan) ； 王亞男(Ya-Nan Wang) ； 葉永廉(Yung-Lien Yeh)

《中華林學季刊》 38卷1期 (2005/03) Pp. 67-82

https://doi.org/10.30064/QJCF.200503.0005

摘要

本研究利用樹輪氣候學的方法，解析塔塔加地區台灣雲杉立木樹輪特徵值對於氣候因子的反應。推估該地區過去245年來溫度與降雨量的變化。用反應函數與相關函數均達顯著水準月份之平均溫度與降雨量，建立轉換迴歸方程式，經過交叉檢驗。季節平均溫度部分，樹輪寬度年表的組合年表推估春季與秋季溫度序列，氣象觀測站實際觀測值相關係數分別為r=0.41與0.45，早材密度年表與最小密度年表的組合年表推估春季與夏季溫度序列，氣象觀測站實際觀測值之相關性係數分別為r=0.46與0.52。季節降雨量部分，樹輪寬度年表的組合年表推估之夏季降雨量序列及早材寬度年表的組合年表推估之秋季降雨量序列，與氣象觀測站之夏季降雨量及秋季降雨量之實際觀測值相關係數分別為r=0.51與0.44；晚材寬度年表的組合年表推估之冬季降雨量序列，與氣象觀測站之冬季降雨量之實際觀測值相關係數為r=0.45。

關鍵字

台灣雲杉 ； 樹輪 ； 氣溫 ； 降雨

並列摘要

The influence of climate on the radial growth and wood density of Taiwan spruce (Picea niorrisonicola) dcuring the last 245 years in the Ta-Ta Chia area central Taiwan, was investigated .at elevations of., 2200m and 2600m, respectively. By response function and simple correlation analyses. During the growth season, both May and September temperaturs and July precipitation is positively correlated with tree-ring width chronologies, whereas May and June precipitatios are negatively correlated with tree-ring width. Both September temperature and July precipitation positively correlate well with maximum wood densities. The results reveal the potential of Taiwan spruce for reconstrucing past climate in the Ta-Ta-Chia area

並列關鍵字

Picea morrisonicola ； Tree-ring ； Temperatre ； Rainfall