Propagation of Drought: From Meteorological Drought to Agricultural and Hydrological Drought

作者：Wen Wang, Maurits Willem Ertsen, Mark D. Svoboda, Mohsin Hafeez · 发表于：Advances in Meteorology · 年份：2016 · DOI：10.1155/2016/6547209 · 被引用次数：223 · 研究领域：Hydrology and Drought Analysis、Climate variability and models、Hydrology and Watershed Management Studies

Drought is a hazard that occurs everywhere in the world (both in dry and in wet areas). Despite the controversy regarding drought changes in the last decades [1–3], increases in drought intensity are clearly identified in some areas [4] and it is believed that although increased heating from global warming may not directly cause droughts, it is expected that when droughts occur, they are likely to set in quicker and be more intense [5]. Throughout its history, China has frequently suffered from drought disasters due to its monsoon climate and was regularly hit hard by droughts over the last decades. Although little evidence of an expansion of the area affected by droughts was found in China over the last 50 years [6], severe droughts in southwestern China in 2010 and the middle/lower Yangtze Basin and Huaihe River Basin in 2011 have drawn more attention from the research community as well as from the public and governments alike on the impacts and problems brought on by drought. Poor performance by China’s emergency response management during recent major drought events highlights the necessity of improving both drought preparedness and emergency response skills.