干旱区生态环境知识资源中心(Arid): AVHRR derived phenological change in the Sahel and Soudan, Africa, 1982-2005

Arid

DOI	10.1016/j.rse.2006.11.025
	AVHRR derived phenological change in the Sahel and Soudan, Africa, 1982-2005
	Heumann, B. W.; Seaquist, J. W.; Eklundh, L.; Jonsson, P.
通讯作者	Heumann, B. W.
来源期刊	REMOTE SENSING OF ENVIRONMENT
ISSN	0034-4257
出版年	2007
卷号	108 期号:4 页码:385-392
英文摘要	The Sahel region of Africa has experienced a decrease in rainfall from the early 1960s to mid 1990s. Recent studies have detected an increased in NDVI amplitude and growing season integrated NDVI for the region since 1982. However, these studies have not examined how plant phenology has changed. Phenology examines life cycle events such as bud burst and leaf senescence. Using the software TIMESAT to estimate phenological parameters from the GlMMS AVHRR NDVI dataset, we have found significant positive trends for the length of the growing and end of the growing season for the Soudan and Guinean regions, but significant trends in the Sahel could not be detected. The geographical extent of these trends contrasts with the more northern extent of positive trends of NDVI amplitude and growing season integrated NDVI. Results suggest two types of "greening" trends associated with rainfall change since the drought in the early 1980s. (c) 2006 Elsevier Inc. All rights reserved.
英文关键词	NDVI phenology Sahel land degradation rangeland AVHRR
类型	Article
语种	英语
国家	Canada ; Sweden
收录类别	SCI-E
WOS记录号	WOS:000247127800004
WOS关键词	NDVI TIME-SERIES ; LAND-COVER CLASSIFICATION ; SATELLITE SENSOR DATA ; VEGETATION INDEX ; PLANT PHENOLOGY ; SAHARA DESERT ; CLIMATE ; TRENDS ; EXTRACTION ; PATTERNS
WOS类目	Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/155869
作者单位	(1)McGill Univ, Dept Geog, Global Environm & Climate Change Ctr, Montreal, PQ H3A 2K6, Canada;(2)Lund Univ, Dept Phys Geog & Ecosyst Anal, S-22362 Lund, Sweden;(3)Malmo Univ, Nat Environm Soc, S-20506 Malmo, Sweden
推荐引用方式 GB/T 7714	Heumann, B. W.,Seaquist, J. W.,Eklundh, L.,et al. AVHRR derived phenological change in the Sahel and Soudan, Africa, 1982-2005[J],2007,108(4):385-392.
APA	Heumann, B. W.,Seaquist, J. W.,Eklundh, L.,&Jonsson, P..(2007).AVHRR derived phenological change in the Sahel and Soudan, Africa, 1982-2005.REMOTE SENSING OF ENVIRONMENT,108(4),385-392.
MLA	Heumann, B. W.,et al."AVHRR derived phenological change in the Sahel and Soudan, Africa, 1982-2005".REMOTE SENSING OF ENVIRONMENT 108.4(2007):385-392.