期刊论文

Dominant Meteorological Factors of Spatiotemporal Variations of Seasonal Potential Evapotranspiration in Yunnan Province During the Period from 1981to 2011

中文

水土保持研究

1005-3409

2017

24

2

184-193

10.13869/j.cnki.rswc.2017.02.032

2013AA102901:国家高技术研究发展计划（863计划） 2014FY110200A07:国家科技基础性工作专项

本校为第一机构

基于1981-2011年云南省52个站点气象数据,通过敏感系数和贡献率法,定量分析了各站点冬春夏秋季潜在蒸散量变化的成因。结果表明:(1)1981-1990年、1991-2011年春、夏、秋季,云南省各站点潜在蒸散量均对平均气温最敏感,其次是相对湿度和日照时数,对风速的敏感性最低;冬季有部分站点以相对湿度的敏感系数最大。(2)蒸散量变化的主导因子因季节不同而不同。1981-1990年,绝大多数站点冬季蒸散量变化主导因子为平均气温,其他季节多数站点主导因子为日照时数;1991-2011年,冬、春、秋季,多数站点以平均气温为主导因子,夏季则以日照时数为主导因子的站点居多。(3)主导因子空间分布格局有差异。平均气温是云...

Based on the data of 52 meteorological stations in Yunnan Province from 1981 to 2011,we quantitatively analyzed the main factors affecting the change of seasonal potential evapotranspiration in each station by sensitivity coefficient and the contribution rate.The results show that:(1)the average temperature was the most sensitive variable for seasonal ET0 in each station,and then followed by relative humidity,sunshine hours in spring,summer and autumn in the period from 1981 to 1990 and from 1991 to 2011,the sensitive of wind speed was the lowest;in winter,relative humidity was the most sensit...