DOI: 10.1016/j.jag.2014.03.024
Scopus记录号: 2-s2.0-84904552451
论文题名: Differences between cropland and rangeland MODIS phenology (start-of-season) in Mali
作者: Begue A ; , Vintrou E ; , Saad A ; , Hiernaux P
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 31, 期: 1 起始页码: 167
结束页码: 170
语种: 英语
英文关键词: Cropland
; MCD12Q2
; MODIS
; Phenology
; Rangeland
; Start of season
Scopus关键词: agricultural land
; crop production
; crop yield
; environmental factor
; phenology
; satellite data
; satellite imagery
; seasonal variation
; spatial variation
; vegetation cover
; Mali
; Sahel [Sub-Saharan Africa]
英文摘要: Start-of-season data are more and more used to qualify the land surface phenology trends in relation with climate variability and, more rarely, with human land management. In this paper, we compared the phenology of rangeland vs cropped land in the Sahel belt of Africa, using the only currently available global phenology product (MODIS MCD12Q2 - Land Cover Dynamics Yearly), and an enhanced crop mask of Mali. The differences in terms of start-of-season (SOS) are spatially (north south gradient), and temporally (10 years, 2001-2009) analyzed in bioclimatic terms. Our results show that globally the MODIS MCD12Q2 SOS dates of croplands and rangelands differ, and that these differences depend on the bioclimatic zone. In Sahelian and Guinean regions, cropland vegetation begins to grow earlier than rangeland vegetation (8-day and 4-day advance, respectively). Between, in the Sudanian and Sudano-Sahelian parts of Mali, rangeland vegetation greens about one week earlier than croplands. These results are discussed in the context of the land surface heterogeneity at MODIS scale, and in the context of the natural vegetation ecology. These results could help interpreting phenological trends in climate change analysis. © 2014 Elsevier B.V. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79699
Appears in Collections: 气候变化事实与影响
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作者单位: UMR TETIS, CIRAD, Montpellier, France; UMR GET, CNRS, Toulouse, France
Recommended Citation:
Begue A,, Vintrou E,, Saad A,et al. Differences between cropland and rangeland MODIS phenology (start-of-season) in Mali[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,31(1)