干旱区研究 ›› 2021, Vol. 38 ›› Issue (1): 178-187.doi: 10.13866/j.azr.2021.01.19

• 天气与气候 • 上一篇    下一篇

1980—2017年青海省地表温度时空变化特征

赵美亮1,2,3(),曹广超2,3(),曹生奎1,2,3,刘富刚4,袁杰1,2,3,张卓1,2,3,刁二龙1,2,3,付建新5   

  1. 1.青海师范大学地理科学学院,青海 西宁 810008
    2.青海省自然地理与环境过程重点实验室,青海 西宁 810008
    3.青藏高原地表过程与生态保育教育部重点实验室,青海 西宁 810008
    4.德州学院资源环境与规划学院,山东 德州 253023
    5.太原师范学院城镇与区域发展研究所,山西 晋中 030619
  • 收稿日期:2020-02-27 修回日期:2020-06-04 出版日期:2021-01-15 发布日期:2021-03-05
  • 通讯作者: 曹广超
  • 作者简介:赵美亮(1995-),男,硕士研究生,研究方向为地表环境过程. E-mail: zhaomeiliang2014@163.com
  • 基金资助:
    国家重点研发计划项目(2017YFC0404304);青海省科技厅重大专项项目(2019-SF-A4);青海省自然科学基金项目(2018-ZJ-903);青海省“高端创新人才千人计划”端青人才字[2016]32号

Spatial-temporal variation characteristics of land surface temperature in Qinghai Province from 1980 to 2017

ZHAO Meiliang1,2,3(),CAO Guangchao2,3(),CAO Shengkui1,2,3,LIU Fugang4,YUAN Jie1,2,3,ZHANG Zhuo1,2,3,DIAO Erlong1,2,3,FU Jianxin5   

  1. 1. School of Geographical Science of Qinghai Normal University, Xining 810008, Qinghai, China
    2. Qinghai Province Key Laboratory of Physical Geography and Environmental Process, Xining 810008, Qinghai, China
    3. MOE Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation, Xining 810008, Qinghai, China
    4. College of Resource, Environment and Planning, Dezhou University, Dezhou 253023, Shandong, China
    5. Institute of Urban and Regional Development, Taiyuan Normal University, Jinzhong 030619, Shanxi, China
  • Received:2020-02-27 Revised:2020-06-04 Online:2021-01-15 Published:2021-03-05
  • Contact: Guangchao CAO

摘要:

地表温度是区域气候、农业生产及土壤养分的重要影响因素,分析地表温度的变化规律对深入了解气候变化的原因及农业生产的布局具有重要意义。基于青海省35个气象基站1980—2017年逐日地表温度、气温和风速数据,采用线性趋势分析、Mann-Kendall非参数检验、小波分析等数理统计方法对青海省地表温度的时空变化特征及其与气温、风速、海拔等因子的关系进行了研究。结果表明:(1) 青海省年均地表温度呈波动上升的趋势,增温速率达0.68 ℃·(10a)-1P<0.01),2001年发生突变;地表温度变化存在明显的季节差异,冬季地温变化速率最明显,为0.77 ℃·(10a)-1P<0.01),其他季节差异不大;青海省年均地表温度具有4~7 a和11~16 a两种周期变化;(2) 全年地表平均温度分别在青南高原和祁连山区形成2个低温区,在柴达木盆地和东部农业区形成2个高温区,且低温区的增温速率较大;(3) 全年及各季地表平均温度与平均气温呈显著正相关,与风速、海拔呈显著负相关关系;(4) 地表平均温度呈现出明显的垂直递减规律且海拔高的地区变暖趋势更加明显。

关键词: 地表温度, 时空变化, 海拔, 青海省

Abstract:

Land surface temperature is an important factor affecting the regional climate, agricultural production, and soil nutrients. It is of great significance to analyze the variation law of ground temperature to understand the causes of climate change and the layout of agricultural production. The characteristics of land surface temperature change and its relationship with the meteorological factor in the Qinghai Province were studied by using linear trend analysis, the Mann-Kendall mutation test, and wavelet analysis based on the data of daily land surface temperature, air temperature, and wind speed data from 35 meteorological stations in the study area from 1980 to 2017. The results showed that: (1) The annual average land surface temperature in Qinghai Province showed a fluctuating and rising trend at a rate of 0.68 °C·(10a)-1P<0.01), and the mutation point was in 2001. There was a significant seasonal difference in the change of surface temperature, and the rate of change was most obvious in winter, which was 0.77 °C· (10a)-1 (P<0.01). There was little difference in the other seasons. The average annual land surface temperature of Qinghai Province was based on two periodic changes of 4-7 a and 11-16 a. (2) The average annual land surface temperature of two low-temperature centers in the Qingnan plateau and Qilian mountain area was compared with two high-temperature centers of the Qaidam Basin and Eastern agricultural area, and the rate of temperature increase of the low-temperature center was faster. (3) The annual and quarterly average land surface temperatures had a significant positive correlation with the average temperature but were negatively correlated with wind speed and altitude. (4) The average surface temperature showed an obvious vertical decreasing pattern, and the warming trend was more obvious in areas with high altitude.

Key words: land surface temperature, spatial-temporal changes, altitude, Qinghai Province