滁州市冬小麦生育期作物需水量和降水变化特征
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摘要
基于1961—2013年滁州市气象数据,运用集合经验模态分解和交叉小波分析,探究了冬小麦生育期需水量和灌溉需水量的变化特征。结果表明:1961—2013年滁州市冬小麦生育期需水量和灌溉需水量均呈增加趋势(增势分别为:2.80,1.48mm/a);年代变化上,冬小麦生育期需水量逐渐增大,灌溉需水量大致呈现先减少后增加的变化特征。冬小麦生育期作物需水量和灌溉需水量均呈现明显的多尺度变化特征,表现为多尺度的周期变化特征和趋势变化特征。作物需水量存在2.65,6.63,13.25,26.50a的周期,灌溉需水量存在3.11,5.89,10.60,26.5a的周期。研究时段,作物需水量和灌溉需水量与潜在蒸散量呈同相位分布,与降水量呈显著的反相位。
Based on the data from Meteorological Bureau of Chuzhou City and using ensemble empirical mode decomposition and cross wavelet analysis,the crop and irrigation water requirements during the wheat growth stages were analyzed.The results showed that the crop and irrigation water requirements experienced increasing trend with the rate of 2.80mm/year and 1.48mm/year from 1961 to 2013,respectively.For decadal change,the crop water requirement presented gradually increasing trend,while the irrigation water requirement exhibited decrease first and then increase.The crop water requirement has the periodicities of 2.65 years,6.63 years,13.25 years and 26.50 years,the irrigation water requirement has the periodicities of 3.11 years,5.89 years,10.60 years and 26.5years.The crop and irrigation water requirements have the in-phase relationship with evapotranspiration and significant anti-phase relationship with precipitation.
Based on the data from Meteorological Bureau of Chuzhou City and using ensemble empirical mode decomposition and cross wavelet analysis,the crop and irrigation water requirements during the wheat growth stages were analyzed.The results showed that the crop and irrigation water requirements experienced increasing trend with the rate of 2.80mm/year and 1.48mm/year from 1961 to 2013,respectively.For decadal change,the crop water requirement presented gradually increasing trend,while the irrigation water requirement exhibited decrease first and then increase.The crop water requirement has the periodicities of 2.65 years,6.63 years,13.25 years and 26.50 years,the irrigation water requirement has the periodicities of 3.11 years,5.89 years,10.60 years and 26.5years.The crop and irrigation water requirements have the in-phase relationship with evapotranspiration and significant anti-phase relationship with precipitation.
引文
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[2]陈秋帆,陈劲松,代兴梅,等.云南春作马铃薯作物系数及需水规律研究[J].湖北农业科学,2016,55(3):564-566.
[3]宋妮,孙景生,王景雷,等.河南省冬小麦需水量的时空变化及影响因素[J].应用生态学报,2014,25(6):1693-1700.
[4]杨晓琳,宋振伟,王宏,等.黄淮海农作区冬小麦需水量时空变化特征及气候影响因素分析[J].中国生态农业学报,2012,20(3):356-362.
[5]吴燕锋,巴特尔·巴克,罗那那,等.石河子地区冬小麦生育期需水量变化特征及其气候成因[J].水土保持通报,2016,36(1):69-74.
[6]符娜,刘小刚,张岩石,等.西南地区水稻灌溉需水量变化规律[J].生态学杂志,2014,33(7):1895-1901.
[7]李摇勇,杨晓光,叶摇清,等.1961—2007年长江中下游地区水稻需水量的变化特征[J].农业工程学报,2011,27(9):175-183.
[8]武永利,田国珍,王云峰.基于改进的SEBS模型的作物需水量研究[J].干旱地区农业研究,2015,33(1):113-118.
[9]牛纪苹,粟晓玲,唐泽军.气候变化条件下石羊河流域农业灌溉需水量的模拟与预测[J].干旱地区农业研究,2016,34(1):206-212.
[10]徐天勇.滁州市清流河水环境容量研究[D].南京:南京大学,2006.
[11]徐志龙,曹阳,杨敏.1951—2005年海河流域汛期降水量的时空变化特征分析[J].水文,2009,29(1):85-88.
[12]Karimov A K,imunek J,Hanjra M A,et al.Effects of the shallow water table on water use of winter wheat and ecosystem health:Implications for unlocking the potential of groundwater in the Fergana Valley(Central Asia)[J].Agricultural Water Management,2014,131(1):57-69.
[13]Allen R G,Pereira L S,Raes D,et al.Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper56[M].Rome:FAO,1998.
[14]何斌.中国农业干旱风险定量评价与空间格局分析[D].北京:中国科学院大学(中国科学院地理科学与资源研究所),2010.
[15]Yang Z,Yu Z,Xie C,et al.Application of HilbertHuang Transform to acoustic emission signal for burn feature extraction in surface grinding process[J].Measurement,2014,47:14-21.
[16]吴燕锋,巴特尔,巴克,等.基于EEMD的杜尚别市1950—2013年降水多尺度分析[J].干旱区资源与环境,2015,29(6):152-157.
[17]张余庆,陈昌春,姚鑫,等.江西省信江流域极端降水时空变化特征[J].水土保持研究,2015,22(4):189-194.
[18]Valdés-Galicia J F,Velasco V M.Variations of mid-term periodicities in solar activity physical phenomena[J].Advances in Space Research,2008,41(2):297-305.
[19]Wu Y,Bake B,Zhang J,et al.Spatio-temporal patterns of drought in North Xinjiang,China,1961—2012based on meteorological drought index[J].Journal of Arid Land,2015,7(4):527-543.