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中国西南五省参考作物蒸散量时空变化分析 预览 被引量:6

Temporal-spatial Changing Characteristics of Reference Crop Evapotranspiration in the Five Provinces of Southwest China
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摘要 为深入了解中国西南5省ET0演变规律,利用1954—2013年广西、重庆、云南、贵州、四川5个省市119个站点逐日地面气象资料,采用FAO-56推荐的Penman-Monteith公式计算各站点逐日ET0,并使用Mann-Kendall检验、Morlet小波分析和GIS反距离加权插值定量分析ET0时空变化特征。结果表明,1954—2013年西南5省ET0多年平均值为855 mm,波动范围为819~901 mm,年均ET0总体呈下降趋势(倾向率为-1.5 mm/10 a),在春、夏、秋、冬季也均呈下降趋势(倾向率分别为-0.4、-0.7、-0.3、-0.1 mm/10a),分别占全年的26.7%、46.7%、20%、6.6%;西南5省ET0多年平均值分别以26 a、12 a、5 a为第1、第2、第3周期进行“增大-减小”交替变化;1954—2013年,西南5省年均ET0空间分布总体表现为南部大于北部,云贵高原西部和广西地区明显大于四川盆地和云贵高原东部,四川盆地相对最小,川西高原南部和云贵高原东部地区相对最大;西南5省ET0在春、夏、秋、冬季空间分布较高值区分别为云贵高原西部、四川盆地和云贵高原东部、广西地区、云贵高原西部,较低值区分别为四川盆地、云贵高原西部、四川盆地和川西高原东北部、四川盆地和广西地区。 For an in-deep analysis of temporal and spatial changing characteristics of ETo in the five provinces of Southwest China(Guangxi Zhuang Autonomous Region, Chongqing Municipality, Yunnan Province, Guizhou Province, Sichuan Province), daily climatic data in 119 meteorological stations were used to calculate ETo using Penman-Monteith (P-M)equation by FAO. In addition, Mann Kendall rank correlation, Morlet wavelet method and interpolation of GIS were applied to a quantitative analysis of the spatial-temporal variations characteristics of ETo. Results showed that the annual mean ETo of the five provinces of Southwest China was 855 ram, the fluctuation range was 819-901 mm over the past sixty years, and the ETo had a decreasing trend with a rate of 1.5 mm per decade for annual series. The descent speeds were -0.4 mrn/10a, -0.7 mrn/10a, -0.3 mm/10a,-0.1 rnm/10a in spring, summer, autumn, winter, which accounted the annual decreasing trend for 26.7%,46.7%,20%, 6.6%. The annual ETo of the five provinces of Southwest China existed an "increase- decrease" alternating change with periods of 26, 12 and 5 years. 26, 12 and 5 years were the first, second and third periods respective- ly; During the past 60 years, the the annual mean ETo in the south was greater than that in the north, those in western Yunnan-Guizhou plateau and the Guangxi area were significantly greater than those in the Sichuan ba- sin and eastern Yurman-Guizhou plateau. Sichuan basin was relatively minimal, those in the south of western Si- chuan plateau and eastern Yunnan-Guizhou plateau area were the relatively largest; In spring, summer, autumn and winter, the higher values were found in western Yunnan-Guizhou plateau, Sichuan basin and eastern Yunnan- Guizhou plateau, Guangxi area, wastern Yunnan-Guizhou plateau, the lower values were found in Sichuan basin, western Yunnan-Guizhou plateau, Sichuan basin and the north-east of western Sichuan plateau, Sichuan basin and Guangxi area.
作者 张青雯 崔宁博 冯禹 龚道枝 胡笑涛 ZHANG Qingwen1, CUI Ningbo1,3, FENG Yu1,2, GONG Daozhi2, HU Xiaotao4 ( 1.State Key Laboratory of Hydraulics and Mountain River Engineering/College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, China; 2.State Engineering Laboratory for Efficient Water Use and Disaster Loss Reduction of Crops, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agriculture Science, Beijing 100081, China; 3.Provincial Key Laboratory of Water-saving Agriculture in Hill Areas of Southern China, Chengdu 610066, China; 4.Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F university, Yangling 712100, China)
出处 《灌溉排水学报》 CSCD 北大核心 2016年第11期80-87,共8页 Journal of Irrigation and Drainage
基金 国家自然科学基金项目(51009101) 南方丘区节水农业研究四川省重点实验室开放基金项目(JSSYS2014-C) 四川省软科学研究计划项目(2015ZR0157)
关键词 西南5省 参考作物蒸散量 时空变化 MANN-KENDALL检验 MORLET小波分析 GIS Southwest five provinces reference crop evapotranspiration temporal-spatial change Mann-Kend- all test Morlet wavelet analysis GIS
作者简介 张青雯(1994-),女。研究方向为节水灌溉理论与新技术。E-mail:1550538857@qq.com 通讯作者:崔宁博(1981-),男。副教授,研究方向为节水灌溉理论与新技术。E-mail:cuiningbo@126.com
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