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	Spatiotemporal Variability in Start and End of Growing Season in China Related to Climate Variability
	Ge Q. S.; Dai, J. H.; Cui, H. J.; Wang, H. J.
	2016
关键词	remote sensing phenology growing season NDVI canonical correlation analysis vegetation green-up land-surface phenology spring phenology tibetan plateau autumn phenology air-temperature eastern china north-america time-series satellite
英文摘要	Satellite-derived vegetation phenophases are frequently used to study the response of ecosystems to climate change. However, limited studies have identified the common phenological variability across different climate and vegetation zones. Using NOAA/Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (NDVI) dataset, we estimated start of growing season (SOS) and end of growing season (EOS) for Chinese vegetation during the period 1982-2012 based on the Midpoint method. Subsequently, the empirical orthogonal function (EOF) analysis was applied to extract the main patterns of phenophases and their annual variability. The impact of climate parameters such as temperature and precipitation on phenophases was investigated using canonical correlation analysis (CCA). The first EOF mode of phenophases exhibited widespread earlier or later SOS and EOS signals for almost the whole country. The attendant time coefficients revealed an earlier SOS between 1996 and 2008, but a later SOS in 1982-1995 and 2009-2012. Regarding EOS, it was clearly happening later in recent years, mainly after 1993. The preseason temperature contributed to such spatiotemporal phenological change significantly. The first pair of CCA patterns for phenology and preseason temperature was found to be similar and its time coefficients were highly correlated to each other (correlation coefficient >0.7). These results indicate that there is a substantial amount of common variance in SOS and EOS across different vegetation types that is related to large-scale modes of climate variability.
出处	Remote Sensing
卷	8
期	5
语种	英语
ISSN号	2072-4292
DOI标识	10.3390/rs8050433
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/42956]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Ge Q. S.,Dai, J. H.,Cui, H. J.,et al. Spatiotemporal Variability in Start and End of Growing Season in China Related to Climate Variability. 2016.

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