江苏沿海降雨量多尺度时空变化规律研究——以连云港市为例  

Multi-scale Spatial and Temporal Variations of the Precipitation in Jiangsu Coastal Region ——A Case Study of Lianyungang City

作　　者：黄平 韦丽 王德维[3] 虞美秀[4] WEI Li;WANG Dewei;YU Meixiu(Hydrological Station in Songjiang District,Shanghai 201600,China;Jiangxi Hydrology Bureau,Nanchang 332000,China;Jiangsu Province Hydrology and Water Resources Investigation Bureau,Lianyungang Branch,Lianyungang 222004,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China)

机构地区：[1]上海市松江区水文站,上海201600 [2]江西省水文局,江西南昌332000 [3]江苏省水文水资源勘测局连云港分局,江苏连云港222004 [4]河海大学水文水资源学院,江苏南京210098

出　　处：《人民珠江》2019年第8期8-12,24,共6页Pearl River

基　　金：中央高校科研经费项目(2017B10814);江苏省自然科学基金项目(BK20160868)

摘　　要：大气降水是水资源的主要补给来源,降水量及其时空分布决定了本地水资源量的丰枯变化。基于长系列日降雨历史观测资料,结合地理信息系统,运用一元线性回归和非参数检验统计方法Mann-Kendall,以江苏沿海城市——连云港市为例,系统全面分析了其年代际尺度、年尺度、汛期与非汛期尺度、月尺度、日尺度降雨的时空变化特征。研究结果表明:连云港市降雨量总体呈丰—枯—丰—枯周期性变化,该市近10a处于降水量相对较少时期;汛期与非汛期降雨呈下降趋势且年际变化大;2—5月份降雨量变化显著;年最大日降雨量上升趋势并不显著,但在2000年以后增幅显著增加。研究结果可为江苏沿海围垦区水资源开发利用提供参考。Precipitation is the main water supply for local water resources, and its amount and spatial and temporal distribution dominate the dry/wet extent for local water resource. Based on long-term historical daily precipitation data, and combined with the GIS software, this paper systematically and comprehensively analyzes the spatial and temporal variations of the precipitation at Lianyungang City, a representative coastal city of Jiangsu Province under inter-decadal, annual, flood & non-flood season, monthly and daily scale by linear regression and Mann-Kendall(non-parametric test statistic method) methods. The results show that the precipitation in Lianyungang City shows a wet-dry-wet-dry period, and the city is in dry period in recent ten years;the precipitation in flood & non-flood seasons is on the decrease with great inter-annual variations;significant changes occur from February to May;and the annual maximum daily rainfall increases slightly, but significantly after 2000. The output of the paper could provide references for revealing the developing and utilizing potential of water resources in Jiangsu coastal regions.

关 键 词：降雨特征 多尺度 时空变化 江苏沿海 

分 类 号：X831[环境科学与工程—环境工程]