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当前位置: 首页 > 文章 > 基于湿润指数的新疆甘家湖地表干湿状况变化趋势 干旱区研究 2016,33 (5) 921-926
Position: Home > Articles > Trends of Surface Dry-wet State of Ganjiahu in Xinjiang Based on Humid Index Arid Zone Research 2016,33 (5) 921-926

基于湿润指数的新疆甘家湖地表干湿状况变化趋势

作  者：
罗青红;宁虎森;陈启民
单  位：
新疆林科院造林治沙研究所;中国科学院新疆生态与地理研究所;东北林业大学
关键词：
湿润指数;潜在蒸散量;干湿状况;甘家湖;新疆
摘  要：
利用1953—2013年甘家湖梭梭林自然保护区内精河和乌苏气象站的逐月气象资料,采用伊凡诺夫公式计算出了逐月潜在蒸散量和湿润指数,分析了地表干湿状况的年际变化、季节变化及其主要影响因素。结果表明:1冬半年、夏半年和全年的多年平均潜在蒸散量分别为298、1 107 mm和1 407 mm,潜在蒸散量在冬半年随时间呈下降趋势,在夏半年和全年潜在蒸散量呈明显上升趋势。2春、夏季湿润指数的年际变化呈减小趋势,秋、冬季和全年湿润指数的年际变化呈增加趋势。根据湿润指数相对应的气候区划标准,春季甘家湖自然保护区为半干旱地区,夏季和秋季为极干旱区-干旱区,冬季为干旱区的亚湿润区-湿润区。3湿润指数与降水量、水汽压和相对湿度呈正相关,与风速、气温和日照时数呈负相关;相对湿度变化对湿润指数变化影响最大,其次是日照时数、气温、水汽压和降水量,影响最小的是风速。
译  名：
Trends of Surface Dry-wet State of Ganjiahu in Xinjiang Based on Humid Index
作  者：
LUO Qing-hong;NING Hu-sen;CHEN Qi-min;Institute of Afforestation and Sand Control,Xinjiang Academy of Forestry Sciences;Xinjiang Institute of Ecology and Geography,Chinese Academic of Sciences;Northeast Forestry University;
关键词：
humidity index;;potential evapotranspiration;;dry/wet conditions;;Ganjiahu Haloxylon Nature Reserve;;Xinjiang
摘  要：
The monthly meteorological data were observed during the period of 1953-2013 at Jinghe and Wusu meteorological stations in the Ganjiahu Haloxylon Nature Reserve in Xinjiang,on which the monthly potential evapotranspiration( ET0) and the humidity index( Ia) were calculated by the Ivanov method. The seasonal and annual changes of surface dry / wet conditions and their main impact factors were analyzed. Results showed that the average values of ET0 in winter half year,summer half year and the whole year during the past 60 years were 298 mm,1 107 mm and 1 407 mm respectively. The ET0 decreased in winter half year but increased in summer half year and the whole year. The Iadecreased in spring and summer but increased in autumn,winter and the whole year. Based on the climate zoning standards related to Ia,the nature reserve is a semiarid region in spring,extremely arid or arid region in summer and autumn,and humid and sub-humid region in winter. Iawas positively correlated with precipitation,vapor pressure and relative humidity,and negatively correlated with wind speed,air temperature and sunshine duration. Iawas influenced maximally by relative humidity,followed by sunshine duration,air temperature,vapor pressure and precipitation,and minimally by wind speed.

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