摘要
以黄淮海平原为研究区,以WaterGAP用水量模型的灌溉耗水量与取水量数据、scPDSI数据为基础,探讨了黄淮海平原灌溉用水量变化特征及其与气象干旱的关系。研究结果表明:黄淮海平原耗水量约占取水量的1/3,其中河北南部、河南和山东等地区用水量均高于其他地区,耕地集中分布区灌溉用水量明显高于其他地区,2003-2014年灌溉取水量呈增加趋势,约37 mm/月;黄淮海平原气象条件趋于干旱,其中2006-2014年干旱连续多发,scPDSI与灌溉取水量距平值大于0的单元数间具有显著的非线性相关关系(R^2=0.60),其中8-12月二者相关关系较为显著;气象干旱是黄淮海平原灌溉用水量增加的重要原因,在气象干旱和农业灌溉的共同影响下,研究区水储量亏损量持续增加。
This paper aims to analyze the variation pattern of irrigation water use in the HuangHuai-Hai Plain and its relationship with drought. Based on the irrigation water consumption and withdrawal data, GRACE data and scPDSI data, the relationship between irrigation water use and drought in the Huang-Huai-Hai Plain was analyzed in this paper. The results showed that(1) irrigation water consumption accounts for about one-third of the water withdrawal. The irrigation water use in the southern part of Hebei province, Henan and Shandong province is higher than that of other regions. Irrigation water withdrawal in the Huang-Huai-Hai Plain increased from 2003 to 2014, with a rate of about 37 mm/month.(2) The meteorological condition tended to be arid, and there was a significant nonlinear correlation between scPDSI and the number of cells with positive irrigation water withdrawal anomaly(R^2=0.60), especially from August to December.(3) The obvious decrease of precipitation led to occurrence of drought events. Therefore, irrigation water withdrawal was increased to ensure grain production. This indicates that drought is a major cause for increased irrigation water use in the Huang-Huai-Hai Plain and exacerbates the terrestrial water storage deficit.
作者
陈征
王文杰
蒋卫国
贾凯
陈坤
CHEN Zheng;WANG Wen-jie;JIANG Wei-guo;JIA Kai;CHEN Kun(Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Faculty of Geographical Science,Beijing Normal University,Beijing 100875,China)
出处
《自然资源学报》
CSSCI
CSCD
北大核心
2020年第5期1228-1237,共10页
Journal of Natural Resources
基金
国家重点研发计划项目(2016YFC0503002)
国家自然科学基金项目(41571077)
国家自然科学基金项目(41731286)。
关键词
黄淮海平原
灌溉用水量
气象干旱
水储量亏损
Huang-Huai-Hai Plain
irrigation water use
meteorological drought
water storage deficit
