应用生态学报2017，Vol.28Issue(12)：4043-4050,8.DOI:10.13287/j.1001-9332.201712.012
基于时空数据挖掘技术的华东区域暴雨时空特征
Spatial-temporal dynamics of rainstorm in East China based on spatial-temporal data mining technology
摘要
Abstract
Based on TRMM 3B42 precipitation data,5 time series at annual scale were constructed.Then the spatial and temporal dynamics of rainstorm in East China region from 2003 to 2015 were evaluated in the support of data mining and GIS spatial analysis technology.The results showed that,the spatial distributions of annual precipitation and annual rainstorm precipitation were similar during 2003-2015.Annual precipitation exhibited a slight increase trend while annual rainstorm ratio showed significant fluctuation.The imbalanced distribution of rainstorm in latitudinal direction was more obvious than that of longitudinal direction.Annual rainstorm frequency changed smoothly with significant spatial difference.Rainstorm showed a tendency of moving to north in the past 13 years.The changing trends of the five variables showed significant spatial differences,and most pixels showed non-significant increasing (or decreasing) trends.关键词
TRMM 3B42/暴雨/时空数据挖掘/Mann-Kendall检验/时空特征Key words
TRMM 3B42/rainstorm/spatial-temporal data mining/Mann-Kendall test/spatial-temporal dynamics引用本文复制引用
娄宁..基于时空数据挖掘技术的华东区域暴雨时空特征[J].应用生态学报,2017,28(12):4043-4050,8.基金项目
本文由国家自然科学基金项目(51604220)资助 This work was supported by the National Natural Science Foundation of China (51604220). （51604220）
