[1] [1] Thomas J R, Namken L N, Oerther G F, et al. Agronomy Journal, 1971, 63: 845.

[2] [2] Jackson R D. International Journal Remote Sensing, 1985, 6: 177.

[4] [4] Carter A G. American journal of Botany, 1991, 78(7): 916.

[6] [6] Michio S, Tsuyoshi A. Remote Sensing of Environment, 1989, 27: 119.

[8] [8] Tian Q, Tong Q, Pu R, et al. International Journal of Remote Sensing, 2001, 22(12): 2329.

[10] [10] Seelig H D, Hoehn A, Stodieck L S, et al. International Journal of Remote Sensing, 2008, 29(13): 3701.

[11] [11] Danson F M, Steven M D, Malthus T J, et al. International Journal of Remote Sensing, 1992, 13: 461.

[12] [12] Penuelas J, Filella I, Biel C, et al. International Journal of Remote Sensing, 1993, 14: 1887.

[13] [13] Filella I, Penuelas J. International Journal Remote Sensing, 1994, 15(7): 1459.

[14] [14] Penuelas J, Inoue Y. Photosynthetica, 1999, 36(3): 355.

[15] [15] Penuelas J, Pinol J, Ogaya R, et al. International Journal of Remote Sensing, 1997, 18: 2869.

[16] [16] Rouse J W, Haas R H, Schell J A, et al. In: NASA/GSFC Final Report, NASA, Greenbelt, MD, USA, 1974. 1.

[17] [17] Schlerf M, Atzberger C, Hill, J. Remote Sensing of Environment, 2005, 95: 177.

[18] [18] Hill M J, Held A A, Leuning R, et al. Remote Sensing of Environment, 2006, 103: 351.

[19] [19] GAO B C. Remote Sensing of Environment, 1996, 58： 257.