摘要
Abstract
Based on Pujiang meteorological data from 1960 to 2009,linear trend estimation,moving average and anomaly method are adopted to analyze the characteristic of climatic change.The research shows in the background of global warming Pujiang climate has changed in recent 50 years,the annual average temperature of Pujiang County was weak upward trend,periodic changes obviously,and can be divided into decline from 1960 to 1985 and from 1986 to 2009 phase of the rising phase;The temperature of spring and summer showed consistent with the annual average temperature;Annual precipitation showed a decreasing trend;for seasonal precipitation changes,summer and autumn precipitation decrease is particularly significant;Annual precipitation decreased significantly makes all kinds of drought has occurred nearly 50 years in Pujiang,in which the frequency of dry winter and summer drought appear higher,in less precipitation periods,annual average temperature is high,all kinds of drought occurrence frequency is higher,resulting the occurrence frequency of severe and severer drought increased,which affected the agricultural production and the ecological environment.关键词
气候变化/气温/降水/干旱/蒲江Key words
climate change/temperature/precipitation/drought/Pujiang分类
天文与地球科学
