Spatiotemporal Change Characteristics and Causes Analysis of Reference Crop Evapotranspiration in Hainan Island

doi:10.3969/j.issn.1000-6362.2018.01.003

Abstract

Abstract: Based on the daily data of 18 meteorological stations in Hainan Island from 1971 to 2010, spatiotemporal change characteristics of ET0 of year and the four seasons were analyzed with linear regression and ArcGIS spatial interpolation techniques after calculation with the Penman-Monteith model. Then the sensitivity coefficients were combined with the relative changes of meteorological factors to study the causes of change of ET0 of year and the four seasons. The results showed that the average annual ET0 of 18 stations was 1191.4mm, and except for summer, ET0 of year and the other 3 seasons increased from the northeast to southwest approximately. The average climate change rate of annual ET0 of 18 stations was -5.0mm×10y-1 in recent 40 years, among which 13 stations’ climate change rates were negative and 5 stations’ were positive. The average climate change rate of four seasons’ ET0 were -3.1, 1.8, -0.7 and -2.8mm×10y-1, respectively. Overall, 13 stations’ annual ET0 decreased mainly due to the decrease of ET0 of spring, and the rest 5 stations’ increase was mainly due to the increase of ET0 of summer. The attribution analysis showed that mean wind speed’ decrease and sunshine hours’ reduction was by and large the main reason for the decrease of ET0 of year, spring, summer, and autumn in most areas of Hainan Island. Besides the reason above, the decrease of vapor pressure was also one of the major causes for the decrease of winter’s ET0. On the other hand, the major reason for the increase of annual and four seasons’ ET0 was the rise of the average maximum and minimum temperature.

Key words: Reference crop evapotranspiration, Penman-Monteith, Sensitivity coefficient, Contribution, Hainan Island

ZOU Hai-ping, CHEN Hui-lin, TIAN Guang-hui, CHEN Xiao-min, BAI Rui, TONG Jin-he. Spatiotemporal Change Characteristics and Causes Analysis of Reference Crop Evapotranspiration in Hainan Island[J]. Chinese Journal of Agrometeorology, 2018, 39(01): 18-26.

References

[1]Allen R G,Pereira L S,Raes D,et al.Crop evapotranspiration: guidelines for computing crop water requirements[M].Rome: FAO,1998:15-64. [2]郭春明,任景全,张铁林,等.东北地区春玉米生长季农田蒸散量动态变化及其影响因子[J].中国农业气象,2016,37(4): 400-407. Guo C M,Ren J Q,Zhang T L,et al.Dynamic change of evapotranspiration and influenced factors in the spring maize field in Northeast China[J].Chinese Journal of Agrometeorology, 2016,37(4):400-407.(in Chinese) [3]王琼,张明军,潘淑坤,等.长江流域潜在蒸散量时空变化特征[J].生态学杂志,2013,32(5):1292-1302. Wang Q,Zhang M J,Pan S K,et al.Spatiotemporal variation patterns of potential evapotranspiration in the Yangtze River basin of China[J].Chinese Journal of Ecology,2013,32(5): 1292-1302.(in Chinese) [4]姬兴杰,朱业玉,顾万龙.河南省参考作物蒸散量变化特征及其气候影响分析[J].中国农业气象,2013,34(1):14-22. Ji X J,Zhu Y Y,Gu W L.Analysis on trends in annual reference crop evapotranspiration and its impact climatic factors in Henan Province during 1971 to 2010[J].Chinese Journal of Agrometeorology,2013,34(1):14-22.(in Chinese) [5]王荣英,李新,陈瑞敏,等.衡水市参考作物蒸散量的时空变化特征及其气候成因[J].中国农业气象,2013,34(3):294-300. Wang R Y,Li X,Chen R M,et al.Spatial and temporal variation of reference crop evapotranspiration in Hengshui[J].Chinese Journal of Agrometeorology,2013,34(3):294-300.(in Chinese) [6]普宗朝,张山青.近48年新疆夏半年参考作物蒸散量时空变化[J].中国农业气象,2011,32(1):67-72. Pu Z C,Zhang S Q.Study on spatial-temporal variation characteristic of summer half year ET0 in recent 48 years in Xinjiang[J].Chinese Journal of Agrometeorology,2011,32(1): 67-72.(in Chinese) [7] Gao G,Chen D L,Ren G Y.Spatial and temporal variations and controlling factors of potential evapotranspiration in China: 1956-2000[J].January of Geographical Sciences,2006,16(1): 3-12. [8]Nandagiri L,Kovoor G M.Performance evaluation of reference evapotranspiration equations across a range of Indian climates [J].J. Irrig. and Drain. Engrg,2006,132(3): 238-249. [9]李英杰,延军平,王鹏涛.北方农牧交错带参考作物蒸散量时空变化与成因分析[J].中国农业气象,2016,37(2):166-173. Li Y J,Yan J P,Wang P T.Temporal and spatial change and causes analysis of the reference crop evapotranspiration in Farming-Pastroral Ecotone of Northern China[J].Chinese Journal of Agrometeorology,2016,37(2):166-173.(in Chinese) [10]环海军,杨再强,刘岩,等.鲁中地区参考作物蒸散量时空变化特征及主要气象因子的贡献分析[J].中国农业气象, 2015,36(6):692-698. Huan H J,Yang Z Q,Liu Y,et al.Temporal and spatial variation of reference crop evapotranspiration and contribution of main factors in the Middle Area of Shandong Province [J].Chinese Journal of Agrometeorology,2015,36(6):692- 698.(in Chinese) [11]曹雯,段春锋,申双和.1971-2010年中国大陆潜在蒸散变化的年代际转折及其成因[J].生态学报,2015,35(15):5085- 5094. Cao W,Duan C F,Shen S H.Inter-decadal breakpoint in potential evapotranspiration trends and the main causes in China during the period 1971-2010[J].Acta Ecologica Sinica, 2015,35(15):5085-5094.(in Chinese) [12]王鹏涛,延军平,蒋冲,等.华北平原参考作物蒸散量时空变化及其影响因素分析[J].生态学报,2014,34(19):5589-5599. Wang P T,Yan J P,Jiang C,et al.Spatial and temporal variations of reference crop evapotranspiration and its influencing factors in the North China Plain[J].Acta Ecologica Sinica,2014,34(19): 5589-5599.(in Chinese) [13]王晓东,马晓群,许莹,等.淮河流域参考作物蒸散量变化特征及主要气象因子的贡献分析[J].中国农业气象,2013,34 (6):661-667. Wang X D,Ma X Q,Xu Y,et al.Variation of reference crop evapotranspiration and contribution of main factors in the Huaihe Basin[J].Chinese Journal of Agrometeorology,2013, 34(6):661-667.(in Chinese) [14]张勃,张调风.1961-2010年黄土高原地区参考作物蒸散量对气候变化的响应及未来趋势预估[J].生态学杂志,2013, 3(3):733-740. Zhang B,Zhang T F.Responses of reference crop evapotranspiration in Loess Plateau of Northwest China to climate change in 1961-2010 and estimation of future trend[J].Chinese Journal of Ecology,2013,3(3):733-740.(in Chinese) [15]马宁,王乃昂,王鹏龙,等.黑河流域参考蒸散量的时空变化特征及影响因素的定量分析[J].自然资源学报,2012,27(6): 975-989. Ma N,Wang N A,Wang P L,et al.Temporal and spatial variation characteristics and quantification of the affect factors for reference evapotranspiration in Heihe River Basin[J].Journal of Natural Resources,2012,27(6):975-989. (in Chinese) [16]曹雯,申双和,段春锋.西北地区生长季参考作物蒸散变化成因的定量分析[J].地理学报,2011,66(3):407-415. Cao W,Shen S H,Duan C F.Quantification of the causes for reference crop evapotranspiration changes in growing season in Northwest China[J].Acta Geographica Sinica,2011,66(3): 407-415.(in Chinese) [17]Yin Y H,Wu S H,Dai E F.Determining factors in potential evapotranspiration changes over China in the period 1971-2008[J].Chinese Science Bulletin,2010,55(29):3329- 3337. [18]向晓明.海南岛水资源基本特点及影响可持续发展的主要因素初探[J].海南师范大学学报(自然科学版),2007,20(1): 80-83. Xiang X M.An analysis of main characteristics and factors on the sustainable development of water resources in Hainan[J].Journal of Hainan Normal University(Natural Science),2007,20(1):80-83.(in Chinese) [19]封志明,杨艳昭,丁晓强,等.甘肃地区参考作物蒸散量时空变化研究[J].农业工程学报,2004,20(1):99-103. Feng Z M,Yang Y Z,Ding X Q,et al.Temporal-spatial changing characteristics of reference crop evapotranspiration in Gansu Province[J].Transactions of the CASE,2004,20(1): 99-103.(in Chinese) [20]陈小丽,吴慧.海南岛近42年气候变化特征[J].气象,2004, 30(8):27-30. Chen X L,Wu H.Characteristics of climatic variation of Hainan Island for last 42 years[J].Meteorological Monthly, 2004,30(8):27-30.(in Chinese) [21]王春乙.海南气候[M].北京:气象出版社,2014:151-158. Wang C Y.Hainan climate[M].Beijing:China Meteorological Press,2014:151-158.(in Chinese) [22]孙瑞,吴志祥,陈邦乾,等.近55年海南岛气候要素时空分布与变化趋势[J].气象研究与应用,2016,37(2):1-7. Sun R,Wu Z X,Chen B Q,et al.Spatio-temporal patterns of climatic changes in Hainan Island in recent 55 years[J]. Journal of Meteorological Research and Application,2016, 37(2):1-7.(in Chinese) [23]陈小敏,陈汇林,邹海平.1961-2010年海南岛日照时数时空变化特征及其影响因素[J].自然灾害学报,2014,23(1):161- 166. Chen X M,Chen H L,Zou H P.Spatiotemporal characteristics of sunshine hours and their effecting factors in Hainan Island during 1961-2010[J].Journal of Natural Disasters,2014,23(1): 161-166.(in Chinese) [24]李艳兰,何如,杜尧东.华南区域太阳总辐射的时空变化特征[J].可再生能源,2012,30(1):13-16. Li Y L,He R,Du Y D.Spatiotemporal variation characteristics of total solar radiation in South China region [J].Renewable Energy Resources,2012,30(1):13-16.(in Chinese) [25]高素华,黄增明,张统钦,等.海南岛气候[M].北京:中国气象出版社,1988:63-81. Gao S H,Huang Z M,Zhang T Q,et al.The climate of Hainan Island[M].Beijing:China Meteorological Press,1988:63-81. (in Chinese) [26]刘昌明,张丹.中国地表潜在蒸散发敏感性的时空变化特征分析[J].地理学报,2011,66(5):579-588. Liu C M,Zhang D.Temporal and spatial change analysis of the sensitivity of potential evapotranspiration to meteorological influencing factors in China[J].Acta Geographica Sinica,2011, 66(5):579-588.(in Chinese) [27]董旭光,顾伟宗,王静,等.影响山东参考作物蒸散量变化的气象因素定量分析[J].自然资源学报,2015,30(5):810-823. Dong X G,Gu Z W,Wang J,et al.Quantitative analysis of climate factors for potential evapotranspiration changes in Shandong[J].Journal of Natural Resources,2015,30(5):810- 823.(in Chinese)