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題名 | Leaf Chlorophyll Content and Surface Spectral Reflectance of Tree Species Along a Terrain Gradient in Taiwan's Kenting National Park=墾丁國家公園地形對於不同樹種間葉綠素含量與反射光譜之影響 |
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作者姓名(中文) | 陳建璋; 楊棋明; 吳守從; 鍾玉龍; 邱亞伯; 陳朝圳; | 書刊名 | Botanical Studies |
卷期 | 48:1 2007.01[民96.01] |
頁次 | 頁71-77 |
分類號 | 436.1 |
關鍵詞 | 葉綠素含量; 可攜式光譜儀; 植生指數; 反射光譜; Leaf chlorophyll; mNDVI; Portable spectroradiometers; Spectral reflectance; Vegetation index; |
語文 | 英文(English) |
中文摘要 | 本研究主要探討臺灣墾丁國家公園南仁山生態保護區內,受地形影響不同樹種間之葉綠素含量與反射光譜之差異;由於本研究區域中,植群與樹種結構之組受到地形與東已季風影響甚劇,因此以本區域作為研究區域。研究中在反射光譜與葉綠素含量資料收集上使用可攜式光譜儀GER 1500與葉綠素計CM1000,應用了數個遙感探測指數作為比較之依據,包含了常態化植生指標(NDVI)、修正後常態化植生指標(Mndvi)、簡單比率植生指數(SR)與修正後簡單比率植生指數(mSR)。研究結果顯示,在上述數個植生指數中以mSR 705 nm與mNDVI 75 nm對於不同地形之影響有顯著性之差異(P<0.01);而相較於其他指數而言,mNDVI 705 nm更有效的呈現不同樹種間葉綠素含量與地形影響的關係。 |
英文摘要 | This study was conducted to investigate variations of leaf chlorophyll content and surface spectral reflectance of different tree species across contrasting terrain in the Nanjenshan Reserve of Kenting National Park, southern Taiwan. Tree species composition and forest types vary because of intense northeast monsoons that frequent this area. In this study, we used several remote sensing technique indices—normalized difference vegetation index (NDVI), modified normalized difference vegetation index (mNDVI), simple ratio (SR), and modified simple ratio (mSR)—to analyze the spectral reflectance data collected from portable spectroradiometers and the GER 1500 and CM1000 chlorophyll meters to estimate leaf chlorophyll content. The results showed that significant differences (P<0.01) arose only among the modified indices mSR 705 nm and mNDVI 705 nm. The index mNDVI705 seemed more sensitive to detecting chlorophyll content in a wide range of tree species across a terrain. Among the indices tested, the mNDVI consistently deviated from the general relationship between chlorophyll content and spectral reflection in different vegetation. The findings indicated that the modified indices were better at studying different tree species than normalized indices across terrain. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。