Temporal and Spatial Change and Causes Analysis of the Reference Crop Evapotranspiration in Farming-Pastroral Ecotone of Northern China

doi:10.3969/j.issn.1000-6362.2016.02.006

Abstract

Abstract:

Based on the FAO Penman-Monteith equation and the meteorological dataset in farming-pastroral ecotone of northern China during 1961 to 2013，ET0 and its sensitivity coefficients to meteorological factors were studied by using trend analysis and spatial interpolation methods．The results showed that the mean annual ET0 was 839-1097mm and decreased slightly at the rate of 0.21mmy^-1 during the study period. 61% meteorological stations in eastern Qinhai, mid-Gansu and the northern Shaanxi plateau showed an increasing trend of 0.85mm·y^-1（P＜0.05），while in Horqin sandy land and the western Liaoning the ET0 declined significantly. The meteorological factors’ contribution to ET0 was influenced by two aspects: the sensitivity coefficient and relative change rate of the meteorological factors. The sensitivity analysis showed the relative humidity was the most sensitive factor among the four main meteorological factors, followed by the wind speed, sunshine hours, mean temperature. But the wind speed decreased dramatically at the rate of 0.0154m-s^-1y^-1（P＜0.001）in recent 53 years, and the comprehensive result was that wind speed had the largest contribution to ET0, followed by relative humidity, which illustrating that the declination of ET0 was due to the deceleration of wind speed.

Key words: Crop evapotranspiration, Penman-Monteith, Sensitivity coefficients, Farming-pastroral ecotone of northern China

LI Ying-jie, YAN Jun-ping, WANG Peng-tao. 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(02): 166-173.

References

[1]刘宪锋,潘耀忠,张锦水,等.1960-2011年西北五省潜在蒸散的时空变化[J].应用生态学报,2013,24(9):2564-2570. Liu X F,Pan Y Z,Zhang J S,et al.Spatiotemporal variation patterns of potential evapotranspiration in five provinces of Northwest China in 1960-2011[J].Chinese Journal of Applied Ecology,2013,24(9): 2564-2570. (in Chinese) [2]倪广恒,李新红,丛振涛,等.中国参考作物腾发量时空变化特性分析[J].农业工程学报,2006,22(5):1-4. Ni G H,Li X H,Cong Z T,et al.Temporal and spatial characteristics of reference evapotranspiration in China[J]. Transactions of the CSAE,2006, 22(5):1-4.(in Chinese) [3]Michael L Roderick,Graham D Farquhar.The cause of decreased pan evaporation over the past 50 years[J]. Science,2002,298(5597):1410-1411. [4]李志.黄土高原1961-2009年参考作物蒸散量的时空变异[J].生态学报,2012,32(13): 4139-4145. Li Z.Spatiotemporal variations in the reference crop evapotranspiration on the Loess Plateau during 1961-2009[J]. Acta Ecologica Sinica,2012,32(13): 4139-4145.(in Chinese) [5]Brutsaert W,Parlange M B.Hydrologic cycle explains the evaporation paradox[J].Nature,1998,396(6706): 30-30. [6]延军平,郑宇.秦岭南北地区环境变化响应比较研究[J].地理研究,2001,20(5):576-582. Yan J P, Zheng Y.A comparative study on environmental change response over the northern and the southern regions of the Qinling Mountains [J].Geographical Research,2001,20(5): 576-582.(in Chinese) [7]刘军会,高吉喜.气候和土地利用变化对中国北方农牧交错带植被覆盖变化的影响[J].应用生态学报,2008,19(9): 2016-2022. Liu J H,Gao J X.Effects of climate and land use change on the changes of vegetation coverage in farming-pastoral ecotone of Northern China[J].Chinese Journal of Applied Ecology,2008, 19(9):2016-2022.(in Chinese) [8]陈海,梁小英,李立新.近40年中国北方农牧交错带气候时空分异特征[J].西北大学学报(自然科学版),2007,37(4): 653-656. Chen H,Liang X Y,Li L X.Analysis on the spatial differentiation pattern of climate of the farming-pastoral zone in North China in the recent 40 years[J].Journal of Northwest University(Natural Science Edition),2007,37(4): 653-656.(in Chinese) [9]刘亚南,潘志华,李超,等.近50年北方农牧交错带气候月季变化和空间分布规律[J].中国农业大学学报,2012, 17(4):96-102. Liu Y N,Pan Z H,Li C,et al.Characteristics of climate change in seasons and months and the spatial distribution in northern farming-pastoral transition zone in recent 50 years[J].Journal of China Agriculture University,2012,17(4): 96-102.(in Chinese) [10]杜华明,延军平,王鹏涛.北方农牧交错带干旱灾害及其对暖干气候的响应[J].干旱区资源与环境,2015,29(1):124-128. Du H M,Yan J P,Wang P T.The drought disaster and its response to the warming-drying climate in the farming- pastoral ecotones in northern China[J].Journal of Arid Land Resources and Environment,2015,29(1): 124-128.(in Chinese) [11]刘洪来,王艺萌,窦潇,等.农牧交错带研究进展[J].生态学报,2009,29(8):4420-4425. Liu H L,Wang Y M,Dou X,et al.Progress and perspective of agro-pasturage ecotone[J].Acta Ecologica Sinica,2009, 29(8): 4420-4425.(in Chinese) [12]陈云浩,苏伟,武永峰,等.中国北方农牧交错带土地利用格局演变与模拟[J].中国科学E辑:技术科学,2006,36(S1): 124-132. Chen Y H,Su W,Wu Y F,et al.The pattern and simulation of land use change in in Farming-Pastroral ecotone of northern China[J].Science in China Ser.E:Technological Sciences, 2006,36(S1):124-132.(in Chinese) [13]李敏敏,延军平.“蒸发悖论”在北方农牧交错带的探讨[J].资源科学,2013,35(11):2298-2307. Li M M,Yan J P.The Evaporation Paradox in the farming-pastoral ecotone of Northern China[J].Resources Science,2013,35(11):2298-2307.(in Chinese) [14]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) [15]Zheng H X,Liu X M,Liu C M,et al.Assessing contributions to panevaporation trends in Haihe River Basin,China[J]. Journal of Geophysical Research: Atmospheres (1984-2012), 2009,114(D24). [16]蒋冲,王飞,穆兴民,等.秦岭南北潜在蒸散量时空变化及突变特征分析[J].长江流域资源与环境,2013,22(5):573-581. Jiang C,Wang F,Mu X M,et al.Spatial-temporal variations andmutations of potential evapotranspiration in the northern andsouthern regions of the Qinling Mountains[J].Resources and Environment in the Yangtze Basin,2013,22(5): 573-581.(in Chinese) [17]魏凤英.气候统计诊断与预测方法研究进展:纪念中国气象科学研究院成立50周年[J].应用气象学报,2006, 17(6): 736-742. Wei F Y.Progresses on climatological statistical diagnosis and prediction methods:in commemoration of the 50 anniversaries of CAMS establishment[J].Journal of Applied Meteorological Science,2006,17(6):736-742.(in Chinese) [18]彭思岭.气象要素时空插值方法研究[D].长沙:中南大学,2010:78-96. Peng S L.Developments of spatio-temporal interpolation methods for meteorological elements[D].Changsha:Central South University,2010:78-96.(in Chinese) [19]张调风,张勃,梁芸,等.黄土高原地区生长季参考作物蒸散量对主要气象要素的敏感性分析[J].中国农业气象,2013, 34(2):162-169. Zhang T F,Zhang B,Liang Y,et al.Sensitivity analysis of reference crop evapotranspiration to key meteorological factors during growing season in Loess Plateau[J].Chinese Journal of Agrometeorology,2013,34(2):162-169.(in Chinese) [20]普宗朝,张山清.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 Agrometeorolog,2011,32(1): 67-72.(in Chinese) [21]梁丽乔,李丽娟,张丽,等.松嫩平原西部生长季参考作物蒸散发的敏感性分析[J].农业工程学报,2008,24(5):1-5. Liang L Q,Li L J,Zhang L,et al.Sensitivity of the reference crop evapotranspiration in growing season in the West Songnen Plain[J].Transactions of CSAE,2008,24(5):1-5.(in Chinese) [22]尹云鹤,吴绍洪,戴尔阜.1971-2008年我国潜在蒸散时空演变的归因[J].科学通报,2010,55(22):2226-2234. Yin Y H,Wu S H,Dai E F.Determining factors in potentialevapotranspiration changes over China in the period 1971-2008[J].Chinese Science Bulletin,2010,55(22):2226- 2234.(in Chinese) [23]施雅风.全球和中国变暖特征及未来趋势[J].自然灾害学报,1996,5(2):5-14. Shi Y F.Features and tendency of global warning and its implications for China[J].Journal of Natural Disasters, 1996,5(2):5-14.(in Chinese) [24]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) [25]曾丽红,宋开山,张柏,等.东北地区参考作物蒸散量对主要气象要素的敏感性分析[J].中国农业气象,2010,31(1): 11-18. Zeng L H,Song K S,Zhang B,et al.Sensitive analysis onreference evapotranspiration to key meteorological factors inNortheast China[J].Chinese Journal of Agrometeorology, 2010,31(1):11-18.(in Chinese) [26]曹雯,申双和,段春锋.西北地区近49年生长季参考作物蒸散量的敏感性分析[J].中国农业气象,2011,32(3):375-381. Cao W,Shen S H,Duan C F.Sensitivity analysis of the reference crop evapotranspiration during growing season in the Northwest China in recent 49 years[J].Chinese Journal of Agrometeorology,2011,32(3):375-381.(in Chinese)