Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (36): 281-287.doi: 10.11924/j.issn.1000-6850.2014-1737

Special Issue: 农业气象

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The Analysis of Climate Variation and Correlation of Summer Heat Arid in Lishui

  

  • Received:2014-06-20 Revised:2014-12-31 Accepted:2014-08-26 Online:2015-03-20 Published:2015-03-20

Abstract: Based on the meteorological observation data such as daily temperature, precipitation and so on from Lishui meteorological stations in summer (from July to August) during 1953 to 2013, according to the classification of high temperature and drought, the high temperature drought was added up, and the methods such as multi-scale analysis, Mann-Kendall test and correlation and so on were used to analyze the climatic trends, mutation and correlation of summer heat drought. The results showed that: summer high temperature is proportional to high temperature strength, longer the high temperature last, the higher the temperature accordingly. It is the most obvious in the early 21st century (July was the most significant). Light and middle drought mainly composed of summer drought, which was most obviously in 60s to 90s. It showed drought happen in the lowest probability in June and in maximum intensity in July and in highest probability in August. Temperature and precipitation were mutated in about 2003, and the two displayed a significant negative correlation. The July high temperature was the most important impact factor to drought.