The extraction of multiple cropping index of China based on NDVI time-series

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	The extraction of multiple cropping index of China based on NDVI time-series
	Huang, Haitao(黄海涛) ; Gao, Zhiqiang
	2011
会议名称	Remote Sensing and Modeling of Ecosystems for Sustainability VIII
会议日期	August 22, 2011 - August 23, 2011
会议地点	San Diego, CA, United states
关键词	Crops Ecosystems Harmonic analysis Image reconstruction Land use Remote sensing Sustainable development Time series
通讯作者	Huang, Haitao(黄海涛)
英文摘要	Multiple cropping index reflects the intensity of arable land been used by a certain planting system. The bond between multiple cropping index and NDVI time-series is the crop cycle rule, which determines the crop process of seeding, jointing, tasseling, ripeness and harvesting and so on. The cycle rule can be retrieved by NDVI time-series for that peaks and valleys on the time-series curve correspond to different periods of crop growth. In this paper, we aim to extract the multiple cropping index of China from NDVI time-series. Because of cloud contamination, some NDVI values are depressed. MVC (Maximum Value Composite) synthesis is used to SPOT-VGT data to remove the noise, but this method doesn't work sufficiently. In order to accurately extract the multiple cropping index, the algorithm HANTS (Harmonic Analysis of Time Series) is employed to remove the cloud contamination. The reconstructed NDVI time-series can explicitly characterize the biophysical process of planting, seedling, elongating, heading, harvesting of crops. Based on the reconstructed curve, we calculate the multiple cropping index of arable land by extracting the number of peaks of the curve for that one peak represents one season crop. This paper presents a method to extracting the multiple cropping index from remote sensing image and then the multiple cropping index of China is extracted from VEGETATION decadal composites NDVI time series of year 2000 and 2009. From the processed data, we can get the spatial distribution of tillage system of China, and then further discussion about cropping index change between the 10 years is conducted.
收录类别	EI
会议主办者	The Society of Photo-Optical Instrumentation Engineers (SPIE)
会议录	Proceedings of SPIE - The International Society for Optical Engineering
会议录出版者	SPIE
会议录出版地	P.O. Box 10, Bellingham, WA 98227-0010, United States
语种	英语
ISBN号	9780819487667
内容类型	会议论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/21933]
专题	地理科学与资源研究所_研究生部
推荐引用方式 GB/T 7714	Huang, Haitao,Gao, Zhiqiang. The extraction of multiple cropping index of China based on NDVI time-series[C]. 见:Remote Sensing and Modeling of Ecosystems for Sustainability VIII. San Diego, CA, United states. August 22, 2011 - August 23, 2011.