globalchange  > 气候变化事实与影响
DOI: 10.1016/j.jag.2014.02.002
Scopus记录号: 2-s2.0-84897485014
论文题名:
Fluorescence, PRI and canopy temperature for water stress detection in cereal crops
作者: Panigada C; , Rossini M; , Meroni M; , Cilia C; , Busetto L; , Amaducci S; , Boschetti M; , Cogliati S; , Picchi V; , Pinto F; , Marchesi A; , Colombo R
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2014
卷: 30, 期:1
起始页码: 167
结束页码: 178
语种: 英语
英文关键词: Airborne ; Fluorescence ; PRI ; Stress detection ; Thermal ; Water stress
Scopus关键词: airborne survey ; canopy ; cereal ; chlorophyll ; fluorescence ; imagery ; remote sensing ; vegetation ; water stress
英文摘要: Narrow-band multispectral remote sensing techniques and thermal imagery were investigated for water stress detection in cereal crops. Visible and near infrared AISA Eagle (Specim, Finland) and thermal AHS-160 (Sensytech Inc., USA) imageries were acquired with an airborne survey on a farm-level experimental site where maize (Zea mays L.) and sorghum (Sorghum bicolor L.) were grown with three different irrigation treatments. Vegetation biophysical and eco-physiological measurements were collected concurrently with the airborne campaign. Leaf fluorescence yield (ΔF/Fm') resulted to be a good indirect measure of water stress. Therefore, ΔF/Fm' measurements were compared against remotely sensed indicators: (i) the Photochemical Reflectance Index (PRI), (ii) the sun-induced chlorophyll fluorescence at 760 nm (F760), retrieved by the Fraunhofer line depth method and (iii) the canopy temperature (TC) calculated decoupling soil and vegetation contributions. TC was related to ΔF/Fm' with the highest determination coefficient (R2 = 0.65), followed by PRI586 (reference band at 586 nm) (R2 = 0.51). The relationship with F760 was significant but weaker (R2 = 0.36). The coefficient of determination increased up to 0.54 when pigment concentration was considered by multiplying ΔF/Fm' and chlorophyll content, confirming the close relationship between passive fluorescence signal, pigment content and light photosystem efficiency. PRI586, F760 and TC maps were produced in maize and sorghum plots. The differences in the average values of PRI586, F760 and TC extracted from the plots with different water treatments showed that water treatments were well discriminated in maize plots by the three remotely sensed indicators. This was confirmed by the visual observation of the PRI586, F760 and TC maps, while in sorghum plots, F760 and TC appeared more sensitive to water stress compared to PRI586. © 2014 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79711
Appears in Collections:气候变化事实与影响

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作者单位: Remote Sensing of Environmental Dynamics Laboratory, Department of Earth and Environmental Science (DISAT), University of Milano-Bicocca, Piazza della Scienza 1, 20126 Milano, Italy; European Commission, DG-JRC, Institute for Environment and Sustainability, Monitoring Agricultural Resources Unit - H04, Ispra, VA, Italy; European Commission, DG-JRC, Institute for Environment and Sustainability, Forest Resources and Climate Unit - H03, Ispra, VA, Italy; Istituto di agronomia generale e coltivazioni erbacee, Università Cattolica del Sacro Cuore, Piacenza, Italy; Remote Sensing Department, IREA, National Research Council (CNR), Milano, Italy; Consiglio per la Ricerca e la Sperimentazione in Agricoltura (CRA), Research Unit of Food Technology, Milano, Italy; Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich, Leo-Brandt-Straße, 52425 Jülich, Germany; Department of Architecture, Built Environment and Construction Engineering (ABC), University Politecnico, Milano, Italy

Recommended Citation:
Panigada C,, Rossini M,, Meroni M,et al. Fluorescence, PRI and canopy temperature for water stress detection in cereal crops[J]. International Journal of Applied Earth Observation and Geoinformation,2014-01-01,30(1)
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