淮河流域土壤含水量与气候因子的相关性分析——以蚌埠站为例  

Correlation Analysis of Soil Moisture Content and Climatic Factors in Huaihe River Basin:A Case Study of Bengbu Station

作　　者：刘勇[1] 朱永华[1] 吕海深[1] 许海婷 苟琪琪 崔晨韵 王振龙[2] LIU Yong;ZHU Yong-hua;LU Hai-shen;XU Hai-ting;XUN Qi-qi;CUI Chen-yun;WANG Zhen-long(School of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Anhui Key Laboratory of Water Resources,Institute of Water Resources Science,Huaihe Water Conservancy Commission,Ministry of Water Resources,Bengbu 233000,Anhui Province,China)

机构地区：[1]河海大学水文水资源学院,南京210098 [2]水利部淮河水利委员会水利科学研究院水利水资源安徽省重点实验室,安徽蚌埠233000

出　　处：《节水灌溉》2021年第1期20-26,共7页Water Saving Irrigation

基　　金：国家重点研发计划项目(2019YFC1510504);国家自然科学基金重点项目(41830752);国家自然科学基金面上项目(42071033;41961134003)。

摘　　要：对进一步认识淮河流域气候变化下的土壤水分资源,调节土壤水分的状况和提高作物产量提供有效的依据。以蚌埠站为例,利用五道沟水文试验站近33 a土壤水分观测资料和气象观测资料,采用M-K检验法和一元线性回归法,分析全球气候变暖背景下淮河流域土壤含水量和气温、降水的变化特征,研究了土壤含水量与气候因子的相关性。结果表明:近33 a来,淮河流域年平均气温和降水均有升高趋势,其中气温升高显著,气温的突变年为1994年;10 cm土层深土壤含水量呈上升趋势,30、50、100 cm深土壤含水量呈下降趋势;100 cm深土壤含水量在秋季与降水呈显著正相关,10 cm深土壤含水量在夏季和秋季与降水呈显著正相关。淮河流域土壤含水量受季节性影响较大,不同季节、不同深度的土壤含水量与气温和降水表现出不同的相关关系;表层土壤含水量主要受降水影响,随着降水增多,表层土壤含水量增大;深层土壤含水量受气温影响较大,随着气温升高,深层土壤含水量减少。In order to provide an effective basis for further understanding of soil water resources under climate change in Huaihe River Basin,regulating soil water status and increasing crop yield,taking Bengbu station as an example,based on the soil moisture observation data and meteorological observation data of Wudaogou hydrological experimental station in recent 33 years,the variation characteristics of soil water content,temperature and precipitation in Huaihe River Basin under the background of global warming were analyzed by using m-k test method and univariate linear regression method,and the correlation between soil moisture content and climate factors was studied.The results showed that:in the past 33 years,the annual average temperature and precipitation in Huaihe River Basin increased significantly,and the abrupt change year of temperature was 1994;the soil water content of 10 cm depth soil layer showed an upward trend,while that of 30 cm depth,50 cm depth and 100 cm depth showed a downward trend;100 cm depth soil moisture content had a significant positive correlation with precipitation in autumn;There was a significant positive correlation between soil water content and precipitation in summer and autumn.So it can be concluded that the soil water content in Huaihe River Basin is greatly affected by seasons,and the soil water content in different seasons and depths has different correlation with temperature and precipitation;the surface soil water content is mainly affected by precipitation,and the surface soil water content increases with the increase of precipitation;the deep soil water content is greatly affected by the temperature,and the deep soil water content is affected by the temperature Less.

关 键 词：淮河流域 气候因子 气温 降水 土壤含水量 相关性 

分 类 号：S271[农业科学—农业水土工程] TV212[农业科学—农业工程]