Blaikie P M, T Cannon, I Davis, et al. 1994. At risk: natural hazards, people's vulnerability, and disasters. New York: Routledge.Currey B. 1978. Mapping of areas liable to famine in Bangladesh. Ph. D. dissertation, Manoa, University of Hawaii.Cutter S L. 1993. Living with risk: the geography of technological hazards. London: Edward Arnold.Downing T E, K Bakker. 2000. Drought discourse and vulnerability. Chapter 45. In: Wilhite D A (ed.). Drought: A Global Assessment, Natural Hazards and Disasters Series. London: Routledge Publishers.Etkin D, E Haque, L Bellisario, et al. 2004. An assessment of natural hazards and disasters in Canada. The Canadian natural hazards assessment project. Public safety and emergency preparedness Canada and environment Canada, Ottawa.Gao Z Y. 2006. Development and action of irrigation in China. Journal of Economics of Water Resources, 24(1): 36-39, 82. (in Chinese)Hutchinson M F. 2003. ANUSPLIN Version 4.3. Canberra, Australian National University Centre for Resource and Environmental Studies.Jackson C I. 1991. Response strategies for the Great Plains: Canadian and U. S. perspectives. In: Wall G (Ed.). Symposium on the impacts of climatic change and variability on the Great Plains. Department of Geography Publication Series, Occasional Paper No. 12, University of Waterloo, 93- 103.Kern J S. 1995. Geographic patterns of soil water-holding capacity in the contiguous United States. Soil Sci. Soc. Amer. J., 59: 1126-1133.Klocke N L, G W Hergert. 1990. How soil holds water, NebGuide G90-964, INAR. Lincoln: University of Nebraska. Liu J Y, Buheaosier. 2000. Study on spatial-temporal feature of modern land-use change in China: using remote sensing techniques. Quaternary Sciences, 20(3): 229-239. (in Chinese)Lockeretz W. 1981. The dust bowl: Its relevance to contemporary environmental problems. In: Lawson M P and M E Baker (Eds.). The Great Plains: Perspectives and prospects. Lincoln: University of Nebraska Press, 11-31.Opie J. 1989. 100 years of climate risk assessment on the High Plains: Which farm paradigm does irrigation serve? Agric. Hist., 63: 243-269.Shi X M. 2006. Study on the agricultural geomorphology. Journal of Anhui Agri. Sci., 34 (20): 5314-5135, 5317. (in Chinese)Tang H Y, Wang Z W, Shi J M, et al. 2009. Analysis of different dryness/ wetness index in Northwest China. Agricultural Research in the Arid Areas, 27 (5): 6-11, 64. (in Chinese)Turner B L II, Kasperson R E, Matson P A, et al. 2003. A framework for vulnerability analysis in sustainability science. Proc Nat Acad Sci USA 100: 8074-8079.Wilhelmi O V, D A Wilhite. 2002. Assessming vulnerability to agricultural drought: A Nebraska case study. Natural Hazards, 25: 37-58.Wu J J, He B, Lu A F, et al. 2011. Quantitative assessment and spatial characteristics analysis of agricultural drought vulnerability in China.Natural Hazards, 56: 785-801.Yang X H, Yang X L. 2010. Aridity characteristics in East Gansu's Loess Plateau area based on Z index analysis. Agricultural Research in the Arid Areas, 28(3): 248-253. (in Chinese)Zhen L, Xie G D, Yang L, et al. 2005. Land-use change dynamics, driving forces and policy implications in Jinghe watershed of western China. Resources Science, 27 (4): 33-37. (in Chinese) |