盘锦市旱涝变化特征分析  

Analysis of Drought and Flood Variation Characteristics in Panjin City

作　　者：何巍 HE Wei(Panshan County Agricultural Water Conservancy Affairs Service Center, Panjin 124000, China)

机构地区：[1]盘山县农业水利事务服务中心,辽宁盘锦124000

出　　处：《黑龙江水利科技》2020年第4期21-24,共4页Heilongjiang Hydraulic Science and Technology

摘　　要：为了科学、准确地揭示人类活动影响下区域旱涝时空变化特征,结合1986-2018年盘锦市各气象站逐年温度和降水资料,采用趋势拟合方法定量分析了盘锦市旱涝站比例、洪涝站比例、干旱站比例和降水温度均一化指标。研究表明:盘锦地区总体呈干旱化变化趋势,均一化指标的下降速率为-0.012/10a;在空间分布上干旱化趋势整体呈自东南向西北逐渐增强的趋势,线性趋势值的空间分布规律较强,辽河流域以南具有较高的旱涝频率;总体而言,盘锦地区呈洪涝减缓、干旱加剧的特征,实际情况与研究结果的吻合度较高,可为盘锦地区抗旱涝方案的制定和中长期水文预报提供科学的指导。In order to scientifically and accurately reveal the spatial and temporal variation characteristics of regional drought and flood under the influence of human activities,the trend fitting method was used to quantitatively analyze the proportion of drought and flood stations,proportion of flood stations,proportion of drought stations,and the homogenization index of precipitation temperature in Panjin City based on the annual temperature and precipitation data of all meteorological stations from 1986 to 2018.The study shows that:a trend of aridification is showed in the Panjin area on the whole,and the descent rate of homogenization index is-0.012/10a;in terms of spatial distribution,the trend of aridification is gradually increasing from southeast to northwest,and the spatial distribution law of linear trend value is strong,the frequency of drought and flood is high in the south of Liaohe river basin.In general,the Panjin area is characterized as the characteristics of flood relief and drought aggravation,and the actual situation is in good agreement with the research results,which can provide scientific guidance for the formulation of drought and flood relief programs and the medium and long term hydrological forecast in the Panjin area.

关 键 词：旱涝变化 降水温度 时空分布 盘锦地区 

分 类 号：P468[天文地球—大气科学及气象学]