DOI: 10.1016/j.jag.2013.08.003
Scopus记录号: 2-s2.0-84897837717
论文题名: Monitoring water stress in mediterranean semi-natural vegetationwith satellite and meteorological data
作者: Moreno A ; , Maselli F ; , Chiesi M ; , Genesio L ; , Vaccari F ; , Seufert G ; , Gilabert M ; A
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 26, 期: 1 起始页码: 246
结束页码: 255
语种: 英语
英文关键词: Light use efficiency
; Satellite data
; Semi-natural vegetation
; Water stress
Scopus关键词: arid environment
; eddy covariance
; environmental factor
; light use efficiency
; MODIS
; remote sensing
; satellite data
; satellite imagery
; semiarid region
; vegetation cover
; water stress
; Italy
; Tuscany
英文摘要: In arid and semi-arid environments, the characterization of the inter-annual variations of the light useefficiency ε due to water stress still relies mostly on meteorological data. Thus the GPP estimation basedon procedures exclusively driven by remote sensing data has not found yet a widespread use. In thiswork, the potential to characterize the water stress in semi-natural vegetation of three spectral indices(NDWI, SIWSI and NDI7) - from MODIS broad spectral bands - has been analyzed in comparison to ameteorological factor Cws. The study comprises 70 sites (belonging to 7 different ecosystems) uniformlydistributed over Tuscany, and three eddy covariance tower sites. An operational methodology, whichcombines meteorological and MODIS data, to characterize the inter-annual variations of ε due to summerwater stress is proposed. Its main advantage is that it relies on existing series of meteorological datacharacterizing each site and allows calculating a typical Cwsprofile that can be "updated" C*ws for theactual conditions using MODIS spectral indices. The results confirm that the modified C*wscan be used asa proxy of water stress that does not require concurrent information on meteorological data. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79736
Appears in Collections: 气候变化事实与影响
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作者单位: Departament de Física de la Terra i Termodinàmica, Facultat de Física, Universitat de València, Dr. Moliner 50, 46100 Burjassot, Spain; IBIMET-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino (FI), Italy; Institute for Environmental Sustainability, JRC, Via Fermi 2749-TP 050, 21027 Ispra (VA), Italy
Recommended Citation:
Moreno A,, Maselli F,, Chiesi M,et al. Monitoring water stress in mediterranean semi-natural vegetationwith satellite and meteorological data[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,26(1)