Z. G. Tang, J. H. Ma, C. L. Li, et al., “Estimating Vegetation Coverage Using Remote Sensing Data in Sanjiangyuan National Nature Reserve,” Journal of Lanzhou University (Natural Sciences), Vol. 46, No. 2, 2010, pp. 11-16.
 Y. L. Liu, Y. H. Ren, T. Chen, et al., “Comparisions of Estimating Methods of Vegetation Fraction Based on ‘BJ-1’ Microsatellite Imagery,” Remote Sensing Technology and Application, Vol. 22, No. 5, 2007, pp. 581-585.
 X. Yao, Y. Zhu, W. Feng, et al., “Exploring Novel Hyperspectral Band and Key Index for Leaf Nitrogen Accumulation in Wheat,” Spectroscopy and Spectral Analysis, Vol. 29, No. 8, 2009, pp. 2191-2195.
 D. W. Wang, C. Y. Huang, Q. J. Ma, et al., “Quantitative Model of Aboveground Dry Matter Accumulation from Different Components of Cotton Using Hyperspectral Data,” Journal of Shihezi University (Natural Science), Vol. 25, No. 5, 2007, pp. 529-533.
 X. Yang, J. J. Wu, F. Yan and J. Zhang, “Assessment of Regional Soil Moisture Status Based on Characteristics of Surface Temperature/Vegetation Index Space,” Acta Ecologica Sinica, Vol. 29, No. 3, 2009, pp. 1205-1216.
 Y. X. Li, W. N. Yang, L. Tong, et al., “Remote Sensing Quantitative Monitoring and Analysis of Fuel Moisture Content Based on Spectral Index,” Acta Optica Sinica, Vol. 29, No. 5, 2009, pp. 1403-1407. doi:10.3788/AOS20092905.1403
 R. L. Pu, P. Gong, Y. Tian, et al., “Using Classification and NDVI Differencing Methods for Monitoring Sparse Vegetation Coverage: A Case Study of Saltcedar in Nevada, USA. International Journal of Remote Sensing, Vol. 29, No. 14, 2008, pp. 3987-4011. doi:10.1080/01431160801908095
 P. S. Thenkabail, “Inter-sensor Relationships between IKONOS and Landsat-7 ETM+ NDVI Data in Three Ecoregions of Africa,” International Journal of Remote Sensing, Vol. 25, No. 2, 2004, pp. 389-408. doi:10.1080/0143116031000114842
 Z. H. He, H. Liang, S. T. Yang, et al., “The Identification of the Drainage Basin Low-Flow Resources on RS,” Journal of Guizhou Normal University (Natural Science), Vol. 22, No. 2, 2004, pp. 36-39.
 Z. H. He, S. T. Yang, H. Liang, et al., “Identification for the Factors That Impact Low-Flow Resources in Karst Basin by Means of GIS and RS-A Case in Guizhou Province,” Carsologica Sinica, Vol. 23, No. 1, 2004, pp. 48-55.
 Z. H. He, H. Liang, Huang F.S., et al., “The influencing factor analysis of geomorphologic development of karst drainage based on DEM,” Science of Surveying and Mapping, Vol. 33, No. 4, 2008, pp. 70-72
 Huete A, et al. “Overview of the Radiometric and Biophysical Performance of the MODIS Vegetation Indices. Remote Sensing of Environmen, Vol. 83, No. 1, 2002, pp. 195-213. doi:10.1016/S0034-4257(02)00096-2
 G. Chander and B. Markham, “Revised Landsat-5 TM Radiometric Calibration Procedures and Post-Calibration Dynamic Ranges,” 2003. http://landsat.usgs.gov/documents/L5TMCal2003.pdf.
 G. Chander and B. Markham, “Revised Landsat-5 TM radiometric ranges,” IEEE Transactions on Geoscience and Remote Sensing, Vol. 41, No. 11, 2003. http://landsat.usgs.gov/cpf/cpf_notes15.html.
 R. L. Pearson and D. L. Miller, “Remote Mapping of Standing Crop Biomass for Estimation of the Productivity of the Short-Grass Prairie,” Proceedings of the Eighth International Symposium on Remote Sensing of Environment, Vol. 2, 1972, pp. 1357-1381
 F. Baret, G. Guyot and D. J. Major, “TSAVI: A Vegetation Index Which Minimizes Soil Brightness Effects on LAI and APAR Estimation,” Proceedings of 12th Canadian Symposium on Remote Sensing, Vol. 3, 1989, pp. 1355-1358.
 J. L. Reujean and F. M. Breon, “Estimating PAR Absorbed by Vegetation from Bidirectional Reflectance Measurements,” Remote Sensing of Environment, Vol. 51, No. 3, 1995, pp. 375-384. doi:10.1016/0034-4257(94)00114-3