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    许继军, 杨明智, 霍军军, 桑连海, 刘强, 程卫帅. 基于土壤水分状态指数的京津冀地区农业干旱时空变化特征分析[J]. 中国防汛抗旱, 2023, 33(4): 27-32,36. DOI: 10.16867/j.issn.1673-9264.2023117
    引用本文: 许继军, 杨明智, 霍军军, 桑连海, 刘强, 程卫帅. 基于土壤水分状态指数的京津冀地区农业干旱时空变化特征分析[J]. 中国防汛抗旱, 2023, 33(4): 27-32,36. DOI: 10.16867/j.issn.1673-9264.2023117
    XU Jijun, YANG Mingzhi, HUO Junjun, SANG Lianhai, LIU Qiang, CHENG Weishuai. Analysis of spatial-and-temporal variation characteristics of agricultural drought in the Beijing-Tianjin-Hebei region based on soil moisture state index[J]. China Flood & Drought Management, 2023, 33(4): 27-32,36. DOI: 10.16867/j.issn.1673-9264.2023117
    Citation: XU Jijun, YANG Mingzhi, HUO Junjun, SANG Lianhai, LIU Qiang, CHENG Weishuai. Analysis of spatial-and-temporal variation characteristics of agricultural drought in the Beijing-Tianjin-Hebei region based on soil moisture state index[J]. China Flood & Drought Management, 2023, 33(4): 27-32,36. DOI: 10.16867/j.issn.1673-9264.2023117

    基于土壤水分状态指数的京津冀地区农业干旱时空变化特征分析

    Analysis of spatial-and-temporal variation characteristics of agricultural drought in the Beijing-Tianjin-Hebei region based on soil moisture state index

    • 摘要: 为研究京津冀地区多年来的农业干旱情况, 采用该地区26个监测站点2003-2017年15年的土壤水分监测资料, 计算了各站点逐年和逐月的土壤水分状态指数(SMCI), 并利用该指数研究京津冀地区年际、 年内变化特征及其空间分布特征。 结果表明:15年间, 京津冀地区农业干旱平均发生3.7次/a, 主要集中在河北省中部和南部地区, 以轻度干旱和中度干旱为主; 区域SMCI年平均值呈现上升趋势, 其中2016年SMCI平均值最高, 农业干旱情况加重; 56.1%耕地的农业干旱程度表现出显著上升的变化趋势, 集中分布在河北省东南部和北部大部分地区。 研究结果可为京津冀地区干旱预警和抗旱减灾提供理论依据。

       

      Abstract: To study the agricultural drought situation in the Beijing- Tianjin- Hebei region over the years, soil moisture monitoring data from 26 stations in the region from 2003 to 2017 were used to calculate the soil moisture status index (SMCI) of each station yearly and monthly. The index was used to study the interannual and interannual changes and spatial distribution characteristics of the Beijing-Tianjin-Hebei region. The results show that over the past 15 years, agricultural droughts in the Beijing-Tianjin-Hebei region occurred an average of 3.7 times per year, mainly concentrated in the central and southern regions of Hebei Province, with light and moderate droughts as main types; The annual average value of regional SMCI shows an upward trend, with the highest SMCI average value in 2016 and the worsening of agricultural drought; The agricultural drought degree of 56.1% of arable land shows a significant upward trend, mainly distributed in the southeastern and northern parts of Hebei Province. The research results can provide theoretical basis for drought warning and drought resistance and disaster reduction in the Beijing-Tianjin-Hebei region.

       

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