Hayes M. Drought Indices[Z]. National drought mitigation center, University of Nebraska-Lincoln, 浏览
[16]
Lohani V K, Loganathan G V.Early warning system for drought management using the Palmer drought index[J]. Journal of the American Water Resources Association, 1997, 33(6):1375-1386.
[17]
Skaggs R H.Drought in the United States, l93l-l940[J]. Annals of the Association of American Geographers, 1975, 65:391-402.
Allen R G, Pereira LS, Raes D, et al. Crop Evapotranspiration[M]. FAO Irrigation and Drainage Paper56, Rome, 1998:18-29.
[20]
Palmer W C. Meteorological Drought Research Paper No.45[M]. Washington D. C.:US Weather Bureau, 1965.
[21]
Alley W M. The Palmer Drought Severity Index:Limitations and assumptions[J]. J Climate Appl Meteor, 1984, 23(7):1100-1109. 2.0.CO;2 target="_blank">
[22]
Karl T R. Some spatial characteristics of drought duration in the United States[J]. J Climate Appl Meteor, 1983, 22(8):1356-1366. 2.0.CO;2 target="_blank">
[23]
Zou X K, Zhai P M, Zhang Q. Variations in droughts over China:1951-2003[J]. Geophys Res Lett, 2005, 32(4):L04707, doi:10.1029/2004GL021853.
[24]
Carlson T N, Gillies R R, Perry E M. A method to make use of thermal infrared temperature and NDVI management to infer surface soil water content and fractional vegetation cover[J]. Remote Sens Rev, 1994, 9(1):161-173.
Ma Xiaodong, Chen Yaning, Zhu Chenggang, et al.The variation in soil moisture and the ppropriate groundwater table for desert riparian forest along the Lower Tarim River[J]. J Geogr Sci, 2011, 21(1):150-162.
