Assessing growing season beginning and end dates and their relation to climate in Taiwan using satellite data

Chung Te Chang, Teng Chiu Lin, Su Fen Wang, Matthew A. Vadeboncoeur

研究成果: Article

19 引文 斯高帕斯(Scopus)

摘要

Due to the close relationship between climate and plant phenology, changes in plant phenological patterns have been used as a surrogate of climate change. We analysed Moderate Resolution Imaging Spectroradiometer (MODIS) images to investigate the onset, offset and length of growing season, as well as spatial and inter-annual patterns of Normalized Difference Vegetation Index (NDVI) across six types of vegetation/land use in Taiwan. Regression models indicate that temperature was moderately to strongly related to NDVI for each of the six vegetation/ land-use types (coefficients of determination (R2) = 0.45-0.86). There was a 1-2 month lag time between changes in temperature and NDVI in the forests that are distributed in mid- to high-elevation areas, but not in low-elevation unirrigated fields, paddy fields and urban areas. The relationship between precipitation and changes in NDVI was only significant for unirrigated fields and urban areas (R2 = 0.37-0.43). Growing season ended considerably earlier at low elevations than at high elevations, possibly because of the earlier start and more severe dry period in low-elevation areas, such that the length of the growing season was longer in the forests than in the unirrigated fields, paddy fields and urban areas.

原文English
頁(從 - 到)5035-5058
頁數24
期刊International Journal of Remote Sensing
32
發行號18
DOIs
出版狀態Published - 2011 九月

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

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