热带气象学报
熱帶氣象學報
열대기상학보
2009年
z1期
125-131
,共7页
广西%雨量距平%成因%时空分布%干旱等级
廣西%雨量距平%成因%時空分佈%榦旱等級
엄서%우량거평%성인%시공분포%간한등급
Guangxi%Rainfall anomaly%Cause%Spatial and temporal distribution%Drought grades
研究广西区域的干旱时空分布特征和成因.取广西12个代表站1950-2005年各站逐年逐月的降雨量距平值来计算其干旱出现频率,按干旱轻、中、重的等级指标分析广西的区域干旱时空分布特征.各地春旱的出现频率在39%～53%之间,夏旱出现的频率平均在37%～50%,秋旱出现的频率在46%～56%之间之间,冬旱的频率在46%～57%之间.广西的干旱一年四季都有发生,各季干旱最重的区域为:桂西的春旱最为严重、桂中的夏旱最为严重、桂西秋旱最为严重、桂中的冬旱最为严重.
研究廣西區域的榦旱時空分佈特徵和成因.取廣西12箇代錶站1950-2005年各站逐年逐月的降雨量距平值來計算其榦旱齣現頻率,按榦旱輕、中、重的等級指標分析廣西的區域榦旱時空分佈特徵.各地春旱的齣現頻率在39%～53%之間,夏旱齣現的頻率平均在37%～50%,鞦旱齣現的頻率在46%～56%之間之間,鼕旱的頻率在46%～57%之間.廣西的榦旱一年四季都有髮生,各季榦旱最重的區域為:桂西的春旱最為嚴重、桂中的夏旱最為嚴重、桂西鞦旱最為嚴重、桂中的鼕旱最為嚴重.
연구엄서구역적간한시공분포특정화성인.취엄서12개대표참1950-2005년각참축년축월적강우량거평치래계산기간한출현빈솔,안간한경、중、중적등급지표분석엄서적구역간한시공분포특정.각지춘한적출현빈솔재39%～53%지간,하한출현적빈솔평균재37%～50%,추한출현적빈솔재46%～56%지간지간,동한적빈솔재46%～57%지간.엄서적간한일년사계도유발생,각계간한최중적구역위:계서적춘한최위엄중、계중적하한최위엄중、계서추한최위엄중、계중적동한최위엄중.
In order to study the temporal and spatial distribution characteristics and the causes of regional drought in Guangxi,basing the annual monthly rainfall anomaly values of 12 representative stations from 1950 to 2005, the frequency of drought was calculated to get drought grades as light, medium and heavy. The results show that the frequency of the spring (summer、 autumn、 winter)drought is 39%～53%(37%～50%, 46%～56%, 46%～57%). It is concluded that the droughts of Guangxi may occur throughout the year. The most serious spring and autumn drought(summer and winter drought)appear in Western Guangxi(Central Guangxi).
