J4 ›› 2011, Vol. 29 ›› Issue (1): 94-99.

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Climatic Characteristics and Its Relationship with Reference Crop Evapotranspiration and Soil Moisture in Wanrong County of Shanxi Province

ZHANG Gaobin1,2,GUO Jianmao1,WU Yuanzhi3,JING Shuzhen4   

  1. 1.Nanjing University of Information Science&Technology,Nanjing 210044,China; 2.Wanrong Meteorological Bureau of Shanxi Province,Wanrong 044200,China; 3.Soil and Water Conservation Institute,Chinese Academy of sciences,The State Key Laboratory of Loess Plateau Soil Erosion and Upland Agriculture,Yangling 712100,China;
    4.Jinzhong Meteorological Bureau of Shanxi Province,Jinzhong 030600,China
  • Online:2011-03-31 Published:2011-03-31

山西万荣县近52 a气候特征及其与参考作物蒸散量和土壤湿度的关系

张高斌1,2郭建茂1吴元芝3景淑贞4
  

  1. 1.南京信息工程大学,江苏南京210044; 2.山西省万荣县气象局,山西万荣044200; 3.中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100; 4.山西省晋中市气象局,山西榆次030600
  • 作者简介:张高斌(1968-),男,山西稷山人,在读硕士,工程师,主要从事干旱、农业气象、气象服务工作.E-mail:zhanggaobin2006@126.com
  • 基金资助:

    干旱气象科学基金“卫星资料干旱半干旱陆面过程中的初步应用”(IAM 200905)项目资助

Abstract:

Abstract:The climate characteristic was studied on the basis of meteorological observations during the period of 1957-2008 in Wan-
rong county of Shanxi Province.The results show that annual average temperature increased with a rate of about 0.22℃/10 a,and the
most evident warming occurred in winter.The annual mean maximum and minimum temperature also presented an increasing trend.
The annual precipitation showed a decreasing trend with a rate of 22.1 mm/10 a,and the annual sunshine hours,the annual small pan
evaporation and the annual mean wind speed showed decreasing trends,too.The annual reference crop evaporation showed a decrea-
sing trend with the rate of 21.8 mm/10 a,which might caused by the decrease of the annual sunshine hours and the annual mean wind
speed,as well as the increase of the annual mean vapor pressure and the annual mean minimum temperature.The soil moisture in
wheat field showed a decreasing trend,especially during the 21st century,which mainly caused by the decrease of the annual precipita-
tion.The wheat yield decreased with the decline of soil moisture.Soil drought will become more serious to winter wheat growth.

Key words: climate change, temperature, reference crop evaporation, soil moisture, soil drought

摘要:

利用山西省万荣县气象观测资料,分析了1957~2008年气候变化特征。结果表明:万荣县年平均气温呈上升趋势,其上升速率为0.22℃/10 a。平均气温冬季升高最大;年平均最高、最低温度与年平均温度的整体变化一致,呈明显升高趋势。万荣县降水量总体呈减少趋势,其减少速率为22.1 mm/10 a。年日照时数、年小型蒸发皿蒸发量、年平均风速呈下降趋势。年参考作物蒸散量下降速率为21.8 mm/10 a,这与年日照时数减少、年平均风速变小、年平均水汽压增长、年平均最低温度增大有关。麦田年平均土壤湿度呈下降趋势,特别是进入21世纪以来,土壤湿度在小麦生育期下降较为明显。麦田土壤湿度下降的主要原因是降水量的减少。

关键词: 气候变化, 温度, 参考作物蒸散量, 土壤湿度, 土壤干旱

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