应用生态学报2012，Vol.23Issue(9)：2467-2476,10.
气候变化背景下中国南方地区季节性干旱特征与适应Ⅱ.基于作物水分亏缺指数的越冬粮油作物干旱时空特征
Characteristics and adaption of seasonal drought in southern China under the background of global climate change.Ⅱ.Spatiotemporal characteristics of drought for wintering grain and oil crops based on crop water deficit index
摘要
Abstract
In recent years, seasonal drought occurs frequently in southern China, giving severe impact on the production of local wintering crops. Based on the 1959-2009 meteorological data from 268 meteorological stations in southern China, and by using crop water deficit index (CWDI) as agricultural drought index, this paper analyzed the spatiotemporal characteristics of drought for winter wheat and rapeseed. The results showed that in southern China, drought happened more frequently in Southwest China, north Huaihe basin, and parts of South China during the developmental stages of wintering crops. In the mid-lower Yangtze basin, the intensity and extent of drought increased during the mid-late developmental stages of winter wheat, and became much heavier at its later developmental stages. For rapeseed, the intensity and extent of drought increased during the developmental stage before winter and the late developmental stages. In southwest part, the intensity and extent of drought increased significantly during the developmental stage before winter for winter wheat and rapeseed. Since the early 1990s, the intensity and extent of drought in southern China increased during the mid-late developmental stages of wintering crops.关键词
季节性干旱/作物水分亏缺指数/越冬作物/干旱频率/干旱站次比Key words
seasonal drought/crop water deficit index/wintering crop/drought frequency/station proportion of drought frequency分类
农业科技引用本文复制引用
隋月,黄晚华,杨晓光,李茂松..气候变化背景下中国南方地区季节性干旱特征与适应Ⅱ.基于作物水分亏缺指数的越冬粮油作物干旱时空特征[J].应用生态学报,2012,23(9):2467-2476,10.基金项目
国家科技支撑计划项目(2006BAD04B07)和公益性行业(农业)科研专项(201103001)资助. （2006BAD04B07）
