[1] Zhang T, Barry R G, Knowles K, et al. Statistics and characteristics of permafrost and ground ice distribution in the Northern Hemisphere[J].Polar Geography,1999, 23(2):132-154.
[2] Zhang T, Heginbottom J A, Barry R G, et al. Further statistics on the distribution of permafrost and ground ice in the Northern Hemisphere[J].Polar Geography, 2000, 24(2):126-131.
[3] Zhang T, Barry R G, Knowles K, et al. Distribution of seasonally and perennially frozen ground in the Northern Hemisphere[C]//Proceedings of the 8th International Conference on Permafrost.2003,2:1 289-1 294.
[4] Viterbo P, Beljaars A, Mahfouf J F, et al. The representation of soil moisture freezing and its impacts on the stable boundary layer[J].Quarterly Journal of the Royal Meteorological Society,1999, 125: 2 401-2 426.
[5] Williams P J, Smith M W. The Frozen Earth, Fundamentals of Geocryology[M].Cambridge: Cambridge University Press, 1989.
[6] Oechel W C, Hastings S J, Vourlitis G, et al. Recent change of Arctic tundra ecosystems from a net carbon dioxide sink to a source[J].Nature,1993, 361: 520-523.
[7] Oechel W C, Vourlitis G L, Hastings S J, et al. Acclimation of ecosystem CO₂ exchange in the Alaskan Arctic in response to decadal climate warming[J].Nature,2000, 406: 978-981.
[8] Skogland T, Lomeland S, Goksoyr J. Respiratory burst after freezing and thawing of soil: Experiments with soil bacteria[J].Soil Biology and Biochemistry,1988, 20: 851-856.
[9] Sommerfeld R A, Moisier A R, Musselman R C. CO₂, CH₄, N₂O flux through a Wyoming snowpack and implication for global budgets[J].Nature,1993, 361: 140-142.
[10] Frolking S, Goulden M L, Wofsy S C, et al. Modeling temporal variability in the carbon balance of a spruce/moss boreal forest[J].Global Change Biology,1996, 2(4): 343-366.
[11] Sharratt B S, Radke J K, Hinzman L D, et al. Physics, chemistry, and ecology of frozen soils in managed ecosystems: An introduction[C]//Proceedings of International Symposium on Physics, Chemistry, and Ecology of Seasonally Frozen Soils. CRREL Special Report, 1997.
[12] Maxwell B. Arctic climate: Potential for change under global warming[C]//Arctic Ecosystems in a Changing Climate.New York: Academic Press,1992.
[13] Anisimov O A, Nelson F E. Permafrost distribution in the Northern Hemisphere under scenarios of climatic change[J].Global and Planetary Change,1996, 14: 59-72.
[14] Lachenbruch A H, Marshall B V. Changing climate: Geothermal evidence from permafrost in the Alaskan Arctic[J].Science, 1986, 234: 689-696.
[15] Lachenbruch A H, Cladouhos T T, Saltus R W. Permafrost temperature and the changing climate[C]//Proceedings of the 5th International Conference on Permafrost.1988.
[16] Osterkamp T E. Evidence for warming and thawing of discontinuous permafrost in Alaska[J].EOS Transactions, American Geophysical Union,1994, 75(44): 85.
[17] Nelson F E, Lachenbruch A H, Wo M K, et al. Permafrost and climate change[C]//Proceedings of the 6th International Conference on Permafrost.1993, 2: 987-1 005.
[18] Ferrians O J, Hobson G D. Mapping and predicting permafrost in North America: A review,1963-1973[C]//Proceedings of the 2nd International Conference on Permafrost.1973:479-498.
[19] Brown R J E, Pewe T L. Distribution of permafrost in North America and its relationship to the environment: A review, 1963-1973[C]//Proceedings of the Second International Conference on Permafrost.1973: 71-100.
[20] Yershov E D. General Geocryology[M].Cambridge: Cambridge University Press, 1998.
[21] Zhou Youwu, Guo Dongxin, Qiu Guoqing, et al. Geocryology in China[M]. Beijing: Science Press,2000.[周幼吾, 郭东信, 邱国庆,等.中国冻土[M]. 北京: 科学出版社, 2000.]
[22] Lindsay J D, Odynsky W. Permafrost in organic soils of northern Alberta[J].Canadian Journal of Soil Science,1965, 45: 265-269.
[23] Brown J, Johnson P L. Pedoecological Investigations, Barrow, Alaska[R].CRREL Technical Report No.159,1965:32.
[24] McMichael C E, Hope A S, Stow D A, et al. The relation between active layer depth and a special vegetation index in arctic tundra landscapes of the North Slope of Alaska[J].International Journal of Remote Sensing,1997, 18(11): 2 371-2 382.
[25] Zhang T, Osterkamp T E, Stamnes K. Effects of climate on the active layer and permafrost on the North Slope of Alaska, USA[J].Permafrost and Periglacial Processes,1997, 8: 45-67.
[26] Zhang T. Influence of the seasonal snow cover on the ground thermal regime: An overview[J].Reviews of Geophysics,2005, 43, RG4002, doi:10.1029/2004RG000157.
[27] Haeberli W. Die Basis-Temperatur der winterlichen Schneedecke als moglicher Indikator fur die Verbreitung von Permafrost in den Alpen[J].Zeitshrift fur Gletscherkunde und Glazialgeologie,1973, 9: 221-227.
[28] Smith M W. Microclimate influences on ground temperature and permafrost distribution, Machenzie Delta, Northwest Territories[J].Canadian Journal of Earth Sciences,1975,12: 1 421-1 438.
[29] Zhang Tingjun, Tong Boliang, Li Shude. Influence of snow cover on the lower limit of permafrost in Altai Mountains[J].Journal of Glaciology and Geocryology,1985, 7(1): 57-63.[张廷军, 童伯良, 李树德.我国阿尔泰山地区雪盖对多年冻土下界的影响[J]. 冰川冻土, 1985, 7(1): 57-63.]
[30] Morrissey L A, Strong L L. Mapping permafrost in the boreal forest with thematic mapper satellite data[J].Photogrammetric Engineering and Remote Sensing,1986, 52(9): 1 513-1 520.
[31] Peddle D R, Franklin S E. Classification of permafrost active layer depth from remotely sensed and topographic evidence[J]. Remote Sensing of Environments,1993, 44: 67-80.
[32] Henderson J D. Permafrost mapping along transportation Corridors[C]//Proceedings of a Symposium on permafrost, Geophysics (No. 5), Technical Memorandum No. 128, 1978.
[33] Gaydos L, Witmer R E. Mapping of arctic land cover utilizing LANDSAT digital data[C]//Proceedings of the 4th International Conference on Permafrost.1983,1: 343-346.
[34] Morrissey L A. Predicting the occurrence of permafrost in the Alaskan discontinuous zone with satellite data[C]//Proceedings of the 5th International Conference on Permafrost.Trondheim:Tapir Publishers, Norway,1988,1: 213-217.
[35] Peddle D R, Franklin S E. Multisource evidential classification of surface cover and frozen ground[J].International Journal of Remote Sensing,1992,13(17): 3 375-3 380.
[36] Leverington D W, Duguay C R. Evaluation of three supervised classifiers in mapping “depth to late-summer frozen ground” Central Yukon Territory[J].Canadian Journal of Remote Sensing,1996, 22(2): 163-174.
[37] Haugen R K, McKim H L, Gatto L W, et al. Cold regions environmental analysis based on ERTS-1 imagery[C]//Proceedings of the Eighth International Symposium on Remote Sensing of Environment. 1972.
[38] Anderson D M, Crowder W K, Gatto L W, et al. ERTS View of Alaska, a Regional Analysis of Earth and Water Resources Based on Satellite Imagery[R].US Army Cold Regions Research and Engineering Laboratory, CRREL Technical Report, 1973, TR 241:101.
[39] Anderson D M, McKim H L, Crowder W K, et al.Applications of ERTS-1 imagery to terrestrial and marine environmental analyses in Alaska[C]//Proceedings of the 3rd Earth Resources Technology Satellite-1 Symposium.1994, 1(B): 1 575-1 606.
[40] Duguay C R, Peddle D R. Comparison of evidential reasoning and neural network approaches in a multi-source classification of alpine tundra vegetation[J].Canadian Journal of Remote Sensing,1996, 22(4): 433-440.
[41] Peddle D R. An empirical comparison of evidential reasoning, linear discriminant analysis, and maximum likelihood algorithms for alpine land cover classification[J].Canadian Journal of Remote Sensing,1993, 19(1): 31-44.
[42] Peddle D R, Foody G M, Zhang Airong, et al. Multi-source image classification II: An empirical comparison of evidential reasoning and neural network approaches[J].Canadian Journal of Remote Sensing,1994, 20(4): 396-407.
[43] Beaubian J. Landsat TM satellite images of forests: From enhancement to classification[J].Canadian Journal of Remote Sensing,1994, 20(1):17-26.
[44] Wan Z, Zhang Y, Zhang Q, et al. Validation of the land-surface temperature products retrieved from Terra Moderate Resolution Imaging Spectroradiometer data[J].Remote Sensing of Environment,2002, 83: 163-180.
[45] Duguay C R, Romanovsky V, Fikuda M,et al. The potential of NOAA AVHRR brightness temperature time series for permafrost monitoring on the North Slope of Alaska, USA[C]//Proceedings of the 30th International Symposium on Remote Sensing of Environment. 2003.
[46] Hachem S, Duguay C R, Romanovsky V, et al. Evaluation of the MODIS Land Surface Temperature Daily Global 1-km Product in Permafrost Areas of Northern Canada and Alaska[R].Permafrost Modeling Workshop, 2004.
[47] Elachi C. Introduction to the Physics and Techniques of Remote Sensing[M]. New York:John Wiley & Sons,1987:413.
[48] Kraszewski A, ed. Electromagnetic Wave Interaction with Water-Containing Materials\[M\].Piscataway N J: IEEE Press, 1996:484.
[49] Running S W, Way J B, McDonald K C, et al. Radar remote sensing proposed for monitoring freeze-thaw transitions in Boreal Regions[J].EOS Transactions, American Geophysical Union,1999,80(19): 213-221.
[50] Way J B, Rignot E, Oren R, et al. Evaluating the type and state of Alaska taiga forests with imaging radar to use in ecosystem flux models[J].IEEE Transaction on Geoscience and Remote Sensing,1994, 32: 353-370.
[51] Way J B, Zimmermann R, Rignot E, et al. Winter and spring thaw as observed with imaging radar at BOREAS[J].Journal of Geophysical Research,1997, 102: 29 673-29 684.
[52] Frolking S, McDonald K C, Kimball J S, et al. Using the space-borne NASA scatterometer (NSCAT) to determine the frozen and thawed seasons of a boreal landscape[J].Journal of Geophysical Research,1999, 104(D22):27 895-27 908.
[53] Ulaby F T, Moore R K, Fung A K.Microwave Remote Sensing: Active and Passive[M]. Addison-Wesley,1981:186-255.
[54] Wegmuller U. The effect of freezing and thawing on the microwave signatures of bare soil[J].Remote Sensing of Environments, 1990, 33:123-135.
[55] Wegmuller U, Matzler C, Schanda E. Microwave signatures of bare soil[J].Advance in Space Research,1989, 9(1): 307-316.[56] Way J B, Paris J, Kasischke E, et al. The effect of changing environmental conditions on microwave signatures of forest ecosystems: Preliminary results of the March 1988 Alaskan aircraft SAR experiment[J].International Journal of Remote Sensing, 1990, 11(7): 1 119-1 144
[57] Rignot E, Way J B, McDonald K, et al. Monitoring of environmental conditions in Taiga Forests using ERS-1 SAR[J].Remote Sensing of Environments,1994, 49: 145-154.
[58] Boehnke K, Wisemann V R. ERS scatterometer land application: detecting the thawing of soils in Siberia[J].Earth Observation Quarterly, ESA Publication Division,1996,52: 4-7.
[59] Boehnke K, Wisemann V R. Thawing of soils in Siberia observed by the ERS-1 scatterometer between 1992 and 1995[C]//Proceeding of International Geoscience and Remote Sensing Symposium.1996: 2 264-2 266.
[60] Boehnke K. Detecting soil thawing in Siberia with ERS scatterometer and SAR[C]//Proceeding of 3rd ERS Symposium. vol. I, ESA SP-414, 1997: 35-40.
[61] Boehnke K.Thawing processes during Siberian spring observed by ERS scatterometer and SAR[C]//Proceeding of International Geoscience and Remote Sensing Symposium.1997:1 826-1 828.
[62] Wisemann V. Monitoring of seasonal thawing in Siberia with ERS scatterometer data[J].IEEE Transactions on Geoscience and remote Sensing,2000, 38(4): 1 804-1 809.
[63] Kimball J S, McDonald K C, Keyser A R, et al. Application of the NASA scatterometer (NSCAT) for determining the daily frozen and nonfrozen landscape of Alaska[J].Remote Sensing of Environment,2001, 75(1): 113-126.
[64] McDonald K C, Kimball J, Zimmermann R, et al. Application of spaceborne scatterometery to monitoring seasonal dynamics in boreal ecosystems at regional scales[C]//EOS Transactions, American Geophysical Union. The 2000 Fall Meeting, San Francisco,December 13~19,2000.
[65] Kimball J S, McDonald K C, Running S W, et al. Satellite radar remote sensing of seasonal growing seasons for boreal and subalpine evergreen forests[J].Remote Sensing of Environment,2004, 90: 243-258.
[66] Wang Z J, Li S S. Thaw Deformation of Permafrost Active Layer Near Toolik Lake, Alaska, Imaged by DINSAR Technique During Summer Time[R].AGU Fall Meeting, 1999.
[67] Cline D, Davis R E, Edelstein W, et al. Cold land Processes Mission (EX-7) Science and Technology Implementation Plan[R]. Report on the NASA Post-2002 Land Surface Hydrology Planning Workshop, Irvine, CA, April 12~14, 1999:29.