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  • CN 62-1070/P
  • ISSN 1000-694X
  • 双月刊 创刊于1981年
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天气与气候

1958-2016年呼伦贝尔草原新巴尔虎右旗气温和降水变化特征

  • 邸择雷 ,
  • 乌云娜 ,
  • 宋彦涛 ,
  • 霍光伟 ,
  • 张凤杰 ,
  • 王晓光 ,
  • 张小红
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  • 大连民族大学 环境与资源学院, 辽宁 大连 116600
邸择雷(1994-),男,河北唐县人,硕士研究生,研究方向为植物资源与生态环境保护。E-mail:m18232291341@163.com

收稿日期: 2017-05-19

  修回日期: 2017-08-22

  网络出版日期: 2017-09-20

基金资助

国家自然科学基金项目(31470504,31670455);国家重点研发计划项目(2016YFC0500908);中央高校基本科研业务费项目(DC201501070101)

Variation of Temperature and Precipitation in the Xin Barag Right Banner of the Hulunbeier Grassland during 1958-2016

  • Di Zelei ,
  • Wuyunna ,
  • Song Yantao ,
  • Huo Guangwei ,
  • Zhang Fengjie ,
  • Wang Xiaoguang ,
  • Zhang Xiaohong
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  • College of Environment and Resources, Dalian Minzu University, Dalian 116600, Liaoning, China

Received date: 2017-05-19

  Revised date: 2017-08-22

  Online published: 2017-09-20

摘要

气候变化是影响草原区植被与环境状况的重要因素。利用呼伦贝尔草原新巴尔虎右旗1958-2016年的气温和降水数据资料,采用线性倾向估计法、累积距平分析法、M-K检验法和Morlet小波分析等方法,从不同时间序列上,对该地区近59年的气候变化趋势、极端气候以及突变现象进行分析。结果表明:年平均气温以0.354℃/10a的速率上升,上升趋势显著;四季平均气温均呈现增温趋势,其中春季增温趋势最大;1985-1986年发生了由低温到高温的突变;研究区年平均气温存在11 a的强显著周期。研究区年降水量整体以8.68 mm/10a的速率呈下降趋势,变化趋势不显著;降水集中在夏季(6-8月),占全年降水量的72.9%,7月降水量最大,有效降水日数最多;1961-1962年和1981-1982年降水发生突变;极端降水指标中日最大降水量、连续5 d最大降水量、强降水量、极强降水量、强降水比率、连续无雨日数、零降水量日数均呈现递减趋势,仅降水强度呈递增趋势,变化趋势均不显著;Morlet小波分析表明研究区年降水量存在52 a的强显著周期。新巴尔虎右旗近59 a气候总体呈现干旱化趋势。

本文引用格式

邸择雷 , 乌云娜 , 宋彦涛 , 霍光伟 , 张凤杰 , 王晓光 , 张小红 . 1958-2016年呼伦贝尔草原新巴尔虎右旗气温和降水变化特征[J]. 中国沙漠, 2017 , 37(5) : 1006 -1015 . DOI: 10.7522/j.issn.1000-694X.2017.00069

Abstract

Climate change is an important factor affecting vegetation and environmental conditions in grassland areas. Based on the temperature and precipitation from 1958 to 2016 in the Xin Barag Right Banner, the methods including linear inclination estimation, cumulative anomaly analysis, M-K test and Morlet wavelet analysis were used to analyze and study the trend of climate change, extreme climate and mutation in this region during 1958-2016 from different time sequence. The main results of this research are as follows:the average annual temperature increases at the rate of 0.354℃/10a in study area, and the rising trend is obvious. The average temperature of the four seasons is warming trend,especially in the spring.. The mutation from low temperature to high temperature occurred in 1985-1986. The annual mean temperature of the study area has a strong period of 11 a. The annual precipitation is decreasing at the rate of 8.68 mm/10a, and the trend is not significant. The precipitation in the study area is mainly concentrated in the summer, and the proportion of precipitation in June-August is 72.9%. There have largest precipitation and highest effective precipitation days in July The precipitation changed abruptly in 1961-1962 and 1981-1982. The maximum precipitation, the maximum precipitation for 5 consecutive days, the heavy rainfall, the strong precipitation, the strong precipitation ratio, the number of continuous rain days and the zero precipitation days all showed decreasing trend, only the precipitation intensity showed not obvious increasing trend; Morlet wavelet analysis shows that there is a significant period of 52 a for annual precipitation in the study area. For this region,the climate of Xin Barag Right Banner area showed a trend of drought during the past 59 years.

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