中国降水非均匀性综合评价（英文）

编号 zgly0001584444

文献类型 期刊论文

文献题名 中国降水非均匀性综合评价（英文）

作者 刘永林  延军平  岑敏仪  方群生  刘铮瑶  李英杰 

作者单位 TourismandEnvironmentCollege  ShaanxiNormalUniversity  DepartmentofHealthGeography  ShaanxiNormalUniversity  StateKeyLaboratoryofGeohazardPreventionandGeoenvironmentProtection  ChengduUniversityofTechnology 

母体文献 Journal of Geographical Sciences 

年卷期 2016年06期

年份 2016 

分类号 P426.6 

关键词 heterogeneity  precipitationconcentrationdegree  evaluationindex  comprehensiveevaluation  China 

文摘内容 Precipitation heterogeneity has a nontrivial influence on human life. Many studies have analyzed precipitation heterogeneity but none have proposed a systematic graded index for its evaluation, and therefore, its true characteristics have not been expressed. After comparisons of various methods, the precipitation concentration degree(PCD) method was selected to study precipitation heterogeneity. In addition to the PCD, normal distribution functions, cumulative frequencies, and percentiles were used to establish a graded index for evaluating precipitation heterogeneity. A comprehensive evaluation of precipitation heterogeneity was performed, and its spatiotemporal variation in China from 1960 to 2013 was analyzed. The results indicated that(1) seven categories of precipitation heterogeneity were identified(high centralization, moderate centralization, mild centralization, normal, mild dispersion, moderate dispersion, and high dispersion) and(2) during the study period, the precipitation in more parts of China tended to be normal or dispersed, which is beneficial to human activities.