周泽江,李保琦,赵子岳,董晓勇,顾金普.华北平原地表湿润程度演变及其影响因素分析[J].中国水利水电科学研究院学报,2022,20(2):137-144
华北平原地表湿润程度演变及其影响因素分析
Spatial and temporal distribution characteristics of the humid index in North China Plain
投稿时间:2020-12-18  修订日期:2021-07-26
DOI:10.13244/j.cnki.jiwhr.20200255
中文关键词:  湿润指数  变化特征  影响因素  华北平原
英文关键词:humidity index  evolution characters  influencing factor  North China Plain
基金项目:河北省重点研发计划(20375409D,19274207D)
作者单位
周泽江 广西壮族自治区水利电力勘测设计研究院有限责任公司, 广西 南宁 530023 
李保琦 石家庄铁道大学 土木工程学院, 河北 石家庄 050043 
赵子岳 河北省水利水电第二勘测设计研究院, 河北 石家庄 050021 
董晓勇 青海省水利电力勘测设计研究院, 青海 西宁 810001 
顾金普 贵州新中水工程有限公司, 贵州 贵阳 550000 
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中文摘要:
      随着气候变化的加剧,区域干湿状况表现出高频率和大振幅的变化。华北平原地区,由于水资源本底差,加之气候变化和高强度人类活动的影响,其变化程度更甚。而湿润指数可以综合反映区域干湿状况,是全面表征地表湿润程度的综合指标。为此,本文采用湿润指数,以华北平原82个气象站点1960—2017年逐日气象资料为基础,分析了该区域地表湿润程度演变及其影响因素。结果表明,华北平原地表湿润程度在空间上表现为由东南向西北逐渐变干,在时间上呈现出变干趋势;降水是湿润指数变化的主导因素,其次为相对湿度;风速和太阳辐射的影响相对较小。相关研究成果对华北平原合理应对气候变化具有一定的参考价值,还可为强人类活动下的水资源本底较差区域地表湿润程度研究提供借鉴。
英文摘要:
      With the deepening of climate change, the regional dry and wet conditions show high frequency and large amplitude changes. In the North China Plain,the change is greater due to the background difference in water resources, climate change and the impact of high levels of human activity. The moisture index can comprehensively reflect the dry and wet conditions of one region,and is a comprehensive index to comprehensively represent the moisture degree of the surface. Therefore, based on the daily meteorological data of 82 meteorological stations in the North China Plain from 1960 to 2017, the wettability index was adopted to analyze the evolution of surface wettability and its influencing factors in this region. The results show that the surface moisture of the North China Plain becomes dry gradually from southeast to northwest in space and shows a drying trend in time. Precipitation is the main factor of wetting index change, followed by relative humidity,and the effects of wind speed and solar radiation are relatively small. The relevant research results have a certain reference value to the North China Plain in reasonable response to climate change. It can also provide reference for the study of surface moisture degree in areas with poor water resource background under strong human activities.
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