江西农业学报2012，Vol.24Issue(5)：148-152,166,6.
近50年来榆林市气候变化特征及其对气候生产力的影响研究
Study on Characteristic of Climatic Variation in Yulin City in Recent 50 Years and Its Impact on Climate Productivity
摘要
Abstract
In order to reveal the characteristics of the climatic variation in Yulin city, the monthly air temperature and precipitation data during 1961. - 2010 in Yulin city were analyzed, Thornthwaite Memorial model was used to calculate the climate productivity in this area, and the evolution characteristics of the climate productivity was analyzed by using bivariate regression model. The results showed that: in recent 50 years, the annual mean air temperature and seasonal mean air temperature all increased obviously, especially the winter mean air temperature: the yearly fluctuation of the annual precipitation was tempestuous, while its whole change trend was little. The annual de Martonne aridity had a decreasing trend. The climate productivity had a weak rising trend, the annual precipitation was the main factor affecting the climate productivity in this area, and the positive correlation between the annual precipitation and climate productivity was extremely significant. The climate productivity in Yulin would increase by 21.5 kg/ ( hm2 · a) , if the annual mean air temperature increased by 1 ℃,, while the annual precipitation increased by 1 mm.关键词
气候暖干化/气候生产力/榆林市Key words
Climate warming - drying/ Climate productivity/ Yulin city分类
农业科技引用本文复制引用
方兰,延军平..近50年来榆林市气候变化特征及其对气候生产力的影响研究[J].江西农业学报,2012,24(5):148-152,166,6.基金项目
国家自然科学基金项目"部分重大自然灾害的时空对称性 （）
结构、机理与适应对策"(D010106) （D010106）
