[1] [1] Belnap J. Biological Soil Crusts: Structure, Function, and Management. Berlin: Springer-Verlag, 2001.

[2] [2] Smith M J, Walton D W H. Microbial Ecology, 1985, 11(3): 245.

[3] [3] Beringer J, Lynch A H, Chapin F S, et al. Journal of Climate, 2001, 14: 3324.

[5] [5] Belnap J. Frontiers in Ecology and the Environment, 2003, 1(5): 181.

[9] [9] Karnieli A, Shachak M, Tsoar H, et al. Remote Sensing of Environment, 1996, 57: 88.

[10] [10] Karnieli A, Kidron G J, Glaesser C, et al. Remote Sensing of Environment. 1999, 69: 67.

[14] [14] Zhang J, Rivard B, Sánchez-Azofeifa A. Remote Sensing of Environment, 2005, 95(1): 57.

[15] [15] Chen J, Zhang M Y, Wang L, et al. Remote Sensing of Environment, 2005, 96(2): 165.

[16] [16] Solheim I, Engelsen O, Hosgood B, et al. Remote sensing of Environment. 2000, 72: 78.

[18] [18] Holben B N. International Journal of Remote Sensing, 1986, 7: 1417.