Browsing by Author "Qi J"

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Browsing by Author "Qi J"

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  • An Interdisciplinary field study of the energy and water fluxes in the atmosphere-biosphere system over semiarid rangelands: Description and some preliminary results 
    Kustas W; Goodrich D; Moran M; Amer S; Bach L; Blanford J; Chehbouni A; Claassen H; Clements W; Doraiswamy P; Dubois P; Clarke T; Daughtry C; Gellman D; Grant T; Hipps L; Huete Alfredo; Humes K; Jackson T; Keefer T; Nichols W; Parry R; Perry E; Pinker R; Pinter Jr P; Qi J; Riggs A; Schmugge T; Shutko A; Stannard D; Swiatek E; Van Leeuwen J; Zyl J; Vidal A; Washburne J; Weltz M (American Meteorological Society, 1991)
    Arid and semiarid rangelands comprise a significant portion of the earth's land surface. Yet little is known about the effects of temporal and spatial changes in surface soil moisture on the hydrologic cycle, energy balance, ...
  • Interpretation of the modified soil-adjusted vegetation index isolines in red-NIR reflectance space 
    Jiang Zhangyan; Huete Alfredo; Liu Jing; Qi J (S P I E - International Society for Optical Engineering, 2007)
    In red-NIR reflectance space, the Modified Soil Adjusted Vegetation Index (MSAVI) isolines, representing similar vegetation biophysical quantities, are neither convergent to a point nor parallel to each other. Consequently, ...
  • Interpretation of Vegetation Indices Derived from Multi-temporal SPOT Images 
    Qi J; Huete Alfredo; Moran M; Chehbouni A; Jackson R. (Elsevier, 1993)
    A temporal sequence of 15 SPOT HRV images and low altitude aircraft reflectance data were obtained over soil and cotton fields at the Maricopa Agricultural Center, Arizona from April to October 1989. The SPOT data included ...
  • Leaf Area Index Estimates Using Remotely Sensed Data and BRDF Models in a Semiarid Region 
    Qi J; Kerr Y; Moran M; Weltz M; Huete Alfredo; Sorooshian S.; Bryant R (Elsevier, 2000)
    The amount and spatial and temporal dynamics of vegetation are important information in environmental studies and agricultural practices. There has been a great deal of interest in estimating vegetation parameters and their ...
  • A Modified Soil Adjusted Vegetation Index 
    Qi J; Chehbouni A; Huete Alfredo; Kerr Y; Sorooshian S (Elsevier, 1994)
    There is currently a great deal of interest in the quantitative characterization of temporal and spatial vegetation patterns with remotely sensed data for the study of earth system science and global change. Spectral models ...