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笔者利用1971—2004年福建省66个气象站各月平均气温、降水量、风速、气压和相对湿度资料,计算出潜在蒸散量和湿润指数,分析其时空分布特征,并对其变化原因进行探讨。结果表明:过去34年间,福建省湿润指数总体上略有增加,其中在1991—2000年期间最高为2.73,而在2001—2004年期间最低为2.22;福建省湿润指数在空间分布上表现为由东南部沿海向西北部地区逐渐湿润的空间变化趋势;福建省湿润指数变化主要受降水量和潜在蒸散量的影响,日照时数和相对湿度通过对潜在蒸散量的影响,进而都与湿润指数显著相关。通过对福建省地表湿润状况的演变规律及其区域特征的研究,为科学预测福建省未来地表湿润状况提供重要的科学依据。
Based on the monthly mean temperature, precipitation, wind speed, pressure and relative humidity data of 66 weather stations in Fujian from 1971 to 2004, the potential evapotranspiration and wetting index were calculated, and their temporal and spatial distribution characteristics were analyzed, and the reasons for the changes were also discussed . The results showed that in the past 34 years, the wetness index of Fujian Province generally increased slightly, of which the highest was 2.73 in 1991-2000 and the lowest was 2.22 in 2001-2004. The spatial distribution of Fujian wetland index was expressed by The spatial variability of wetness index in Fujian Province is mainly affected by precipitation and potential evapotranspiration. The sunshine hours and relative humidity are significantly related to the wettability index through the influence on potential evapotranspiration . Through the study of the law of surface wetland evolution and its regional characteristics in Fujian Province, it provides an important scientific basis for predicting the future wetland status in Fujian Province.