【摘要】 以广东省多个雨量站1981—2010年的逐日降水资料为研究样本,结合ARCGIS软件采用降雨集中指数PCI及回归分析方法,进一步认识了广东省月降雨量的时空变化规律。结果表明:汛期沿海月降雨量均大于内陆地区,但历年月平均降雨量最大值分布规律不明显,内陆数据较沿海地区更为平坦化,年内峰值不显;不同特征月的降雨量空间分布存在明显差异;年内汛期的降雨强度有所增大,非汛期的则有所减小;年内降雨的集中度有所增加,且广东沿海地区年内降雨较内陆地区更为集中。更多还原

【Abstract】 Taking the daily precipitation data of many rainfall stations in Guangdong Province from 1981 to 2010 as the research samples,this paper recognizes the temporal and spatial variation of monthly rainfall in Guangdong Province further based on the PCI and regression analysis method with ARCGIS software. The results indicate that: The monthly rainfall in coastal areas is greater than inland areas during flood season, but the distribution of the maximum value of monthly average rainfall over the years is not obvious.The data for inland areas is more stable than that for coastal area, and the peak value is not obvious in the year;There are obvious differences in the spatial distribution of rainfall in different month; The rainfall intensity increases in flood season and decreases in non-flood season; The concentration degree of rainfall in the year increases, and the rainfall in the coastal areas of Guangdong Province is more concentrated than that in the inland areas.更多还原