水科学进展2011，Vol.22Issue(2)：151-159,9.DOI:CNKI:32-1309/P.20110313.2236.010
中国西北地区地表干湿变化及影响因素
Variations of surface humidity and its influential factors in Northwest China
摘要
Abstract
Based on the daily data of 112 meteorological stations from 1960 to 2009, the potential evaporation (PE) is calculated using the UN Food and Agriculture Organization (FAO) Penman-Monteith model, and then the humid index is reconstructed from the PE in Northwest China. With the method of Inverse Distance Weighted, Mann-Kendali, etc, the temporal and spatial variations of humid index are discussed, as well as its impact factors. The result indicates that the humid index increases in the last 5O years with an increasing rate of 0.006/lOa, which are obvious in spring and winter. From northwest to southeast, the humid index displays a marked high-low-high trend in spatial distribution. According to the spatial variation, the study areas can be divided into three sub-regions: obvious increasing, light increasing and continuous decreasing. The influential factors have different impacts on the surface humidity index during different times in the past SO years, showing a positive correlation with precipitation and relative humidity, and negative correlation with sunshine duration, potential evaporation and wind speed.关键词
西北地区/湿润指数/空间分布/年代际变化/影响因素分类
天文与地球科学引用本文复制引用
黄小燕,张明军,贾文雄,王圣杰,张宁..中国西北地区地表干湿变化及影响因素[J].水科学进展,2011,22(2):151-159,9.基金项目
国家自然科学基金资助项目(40701035 （）
40631001 （）
40571033) （）
教育部新世纪优秀人才支持计划资助项目(NCET-10-0019) （NCET-10-0019）
西北师范大学知识与科技创新工程创新团队项目(NWNU-KJCXGC-03-66) （NWNU-KJCXGC-03-66）
西北师范大学知识与科技创新工程科研骨干培育项目(NWNU-KJCXGC-03-78) （NWNU-KJCXGC-03-78）
