Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/89432
標題: A Study on the Relationship between NDVI and Weather Factors in Xindian Watershed, Taiwan
新店溪集水區植生指標與氣象因子之關聯性
作者: 林郁媚
Yu-Mei Lin
關鍵字: 新店溪;植生指標;氣象因子;希爾伯特-黃轉換;Xindian;NDVI;weather factors;HHT transform
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摘要: 
本論文主要探討新店溪集水區的植生動態與氣象因素(氣溫、降雨量等因子)彼此之間的關聯性。運用衛星影像SPOT-VGT之常態化差異植生指標(Normalized Difference Vegetation Index, NDVI)資料予以呈現植生動態的情況。根據1998年~2013年所蒐集的NDVI、溫度、雨量之資料,採用希爾伯特-黃轉換(Hilbert-Huang transform, HHT)法進行時頻分析,所得的時序資料與時頻圖,用以瞭解植物生長情況;並以數值分析關聯性方法分析正負相關性或無關性、變異數分析(Analysis of Variance, ANOVA)判別因子之間的關聯性強度。經分析結果得皮爾斯曼係數顯現植生動態與溫度、雨量有相關性,F檢定所得數值為植生指標與溫度、雨量有強關聯性,最後由皮爾森相關係數顯現植生指標與溫度呈正相關以及與雨量呈負相關。

This study presents the relationship among the vegetation dynamic and weather factors (temperature, rainfall) in Xindian watershed. Data of weather factors and satellite-derived normalized difference vegetation index (NDVI) from 1998 to 2013 were collected to survey the vegetation situation of Xindian watershed. The Xindian watershed is divided into three sub-watersheds: Peishih River sub-watershed, Nanshih River sub-watershed and Xindian River sub-watershed. The Hilbert-Huang transform (HHT) was applied to observe the relationship among vegetation, rainfall and temperature. Pearson's and Spearman's coefficient of correlation analysis and ANOVA (analysis of variance) were used to analyze the correspondence between NDVI and weather factors for each sub-watershed. The results show that vegetation index (NDVI) is correlated with temperature and NDVI is negative correlated to rainfall.
URI: http://hdl.handle.net/11455/89432
其他識別: U0005-1706201415442800
Rights: 同意授權瀏覽/列印電子全文服務,2017-06-19起公開。
Appears in Collections:水土保持學系

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