吉林省1961-2020年生长季玉米旱涝时空特征研究

郭恩亮; 王永芳; 王蕊; 阿如娜; 张耀东

引用本文:	郭恩亮,王永芳,王蕊,等.吉林省1961-2020年生长季玉米旱涝时空特征研究[J].灌溉排水学报,0,():-.
	GUO Enliang,WANG Yongfang,WANG Rui,et al.吉林省1961-2020年生长季玉米旱涝时空特征研究[J].灌溉排水学报,0,():-.

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吉林省1961-2020年生长季玉米旱涝时空特征研究
郭恩亮¹, 王永芳¹, 王蕊², 阿如娜¹, 张耀东¹
1.内蒙古师范大学地理科学学院内蒙古呼和浩特;2.辽宁工业大学化学与环境工程学院辽宁省锦州

摘要:

【目的】识别吉林省玉米不同生育期的旱涝时空演变特征，以期有针对性的制定农业防灾减灾对策。【方法】本文利用吉林省27个气象站1961-2020年逐日气象数据，在运用分段函数估算逐日作物系数（Kc）的基础上，计算各站点逐日改进型作物水分亏缺指数（mCWDI），然后利用气候倾向率和重心转移等方法对吉林省玉米生长季旱涝时空演变规律进行分析。【结果】玉米干旱频率呈现出由西北向东南地区依次递减的趋势，玉米初期至发育期的干旱频率呈现出减少趋势，而生育中后期呈现出干旱增强趋势，雨涝频率呈现出东南地区生育前期和后期较高，而玉米发育期较低的空间分布特征。与此同时，吉林省中部地区玉米雨涝频率增速高于其他地区。【结论】研究结果可为吉林省有效制定农业旱涝灾害防治对策提供科学依据。

关键词: 改进型作物水分亏缺指数;旱涝;玉米;吉林省

DOI：

分类号:S162

基金项目:国家自然科学基金青年项目（41807507）和内蒙古自治区高等学校青年科技英才支持计划项目(NJYT22028)

Spatial and Temporal Characteristics of Drought and Waterlogging for Maize in Jilin Province During Thethe Growing Season of 1961-2020

GUO Enliang¹, WANG Yongfang¹, WANG Rui², Aruna¹, ZHANG Yaodong¹

1.College of Geographical Science,Inner Mongolia Normal University,Hohhot,Inner Mongolia;2.School of Chemical Environmental Engineering,Liaoning University of Technology,Jinzhou

Abstract:

Abstract: 【Objective】Identifying the spatial and temporal evolution characteristics of droughts and waterloggings in different fertility stages of maize in Jilin Province, in order to formulate targeted agricultural disaster prevention and mitigation countermeasures.【Method】 In this paper, the daily meteorological data of 27 stations from 1961 to 2020 were used to calculated the Modified Crop Water Deficit Index (mCWDI) on the basis of daily crop coefficient (Kc) which were estimated by using the piecewise function. Then, the methods such as the climatic variation trend and center of gravity transfer method were applied to analyze the characteristics of drought and waterlogging for maize during the growing season in Jilin province. 【Result】The results showed that the frequency of maize drought showed a decreasing trend from northwest to southeastern region. The frequency of drought from the early stage to the development stage of maize showed a decreasing trend, while the drought enhanced in the middle and late stages. The frequency spatial distribution of maize waterlogging presents that the southeastern region is higher in the early and late growth period, while that is lower in the maize development period. At the same time, the frequency of maize waterlogging in the central part of Jilin Province has increased faster than that in other areas. 【Conclusion】The research results can provide a scientific basis for the effective formulation of agricultural drought and waterlogging disaster prevention countermeasures in Jilin Province.

Key words: Modified crop water deficit index; Drought and waterlogging; Maize; Jilin province