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	Analysis of spatial patterns of multiple cropping systems in Thailand using multi-temporal NDVI data
	Lv T. T. ; Sun X. Y.
	2009
关键词	cropping systems multi-temporal NDVI Thailand
页码	405-409
英文摘要	The objective of this research is to investigate the spatial patterns of multiple cropping systems in Thailand by using temporal NDVI. The data used in this study are 16-day composite NDVI over the period of 2001-2005. After the data preprocessing the fast Fourier transform was applied to the NDVI data on a per pixel basis for the entire study area. The mean NDVI and the amplitudes of the first three harmonics and phase in the first harmonic were used to identify the cropping information. The result showed that area with one cropping system mostly existed on middle or high terrace in ChaoPraya basin and Khorat plateau while two seasons or three seasons per year cropping systems were mostly distributed in flood plain of ChaoPraya River and Mun Rive. Because perennial tree crops are their major crop types in the southern peninsula and south-east coastal region of Thailand and FFT used in the paper is based on one year cycle, the extraction error is greater in these regions than other regions. The result was assessed by statistic data and CBERS data. It was shown that cropping information in most parts of Thailand coincided well with other data except southern peninsula and south-east coastal region.
收录类别	CPCI
会议录出版者	Ieee Computer Soc
语种	英语
ISBN号	978-0-7695-3563-0
内容类型	会议论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/25223]
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	Lv T. T.,Sun X. Y.. Analysis of spatial patterns of multiple cropping systems in Thailand using multi-temporal NDVI data[C]. 见:.

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