水科学进展2013，Vol.24Issue(1)：34-41,8.
1961年以来海河流域干旱时空变化特征分析
Spatial and temporal changes in drought since 1961 in Haihe River basin
摘要
Abstract
Drought is considered one of the weather disasters that restrict the socioeconomic development in China. The Haihe River basin is a typical region suffering from droughts. Daily meteorological observations from 58 stations are selected for the current drought study. The data covers the period 1961-2010 and the stations are located in the basin and its surrounding areas. The accumulated relative moisture index and FSPAAM { Fuzzy and set pair analysis e-valuation method) are used in the study, as they can take into account the accumulated effect of drought as well as the fuzziness boundary conditions and the distribution of objects being evaluated. The characteristics of spatial and temporal drought variations in the Haihe River basin are analyzed. Results show that ①the Haihe River basin is dominated by moderate drought and severe drought, respectively affecting 73 000 km and 77 800 km. The severe drought-affected area increases significantly over the past 50 years; ② during the period 1986-2010, there is a tendency for the expansion of severe drought-prone areas. The latter has gone up to 149 000 km2, which is 1.6 times higher than that of 1961 -1985.关键词
干旱/累积效应/模糊集对/时空变化/海河流域Key words
drought/ accumulated effect/ Fuzzy set pair analysis evaluation method/ spatial and temporal changes/ Haihe River basin分类
建筑与水利引用本文复制引用
严登华,袁喆,杨志勇,王勇,于赢东..1961年以来海河流域干旱时空变化特征分析[J].水科学进展,2013,24(1):34-41,8.基金项目
国家重点基础研究发展计划(973计划)资助项目(2010CB951102) （973计划）
"十二五"国家科技支撑计划资助项目(2012BAC19B03) （2012BAC19B03）
