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干旱区地理 >

2019 , Vol. 42 >Issue 6: 1322 - 1329

DOI: https://doi.org/10.12118/j.issn.1000-6060.2019.06.10

气候与水文

1981—2011年川南山区地温和气温的变化特征

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  • 1 四川农业大学资源学院，四川 成都 611130； 2 四川省烟草公司凉山州公司，四川 西昌 615000； 3 中国电建集团成都勘测设计院有限公司，四川 成都 610072
王冰(1993－)，女，河南三门峡人，硕士研究生，研究方向为土壤资源遥感与信息. E-mail: wangbing.1993@foxmail.com

收稿日期: 2019-05-04

  修回日期: 2019-08-31

  网络出版日期: 2019-11-17

基金资助

四川省教育厅项目(16ZB0048)；四川省烟草公司科技项目(SCYC201402006)

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Change characteristics of soil surface temperature and air temperature in the mountainous region of southern Sichuan from 1981 to 2011

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  • 1 College of Resources,Sichuan Agriculture University,Chengdu 611130,Sichuan,China; 2 Liangshan Branch of Sichuan Provincial Tobacco Company,Xichang 615000,Sichuan,China; 3 PowerChina Chengdu Engineering Corporation Limited,Chengdu 610072,Sichuan,China

Received date: 2019-05-04

  Revised date: 2019-08-31

  Online published: 2019-11-17

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摘要

利用气象站点1981—2011年逐日0 cm土壤温度和气温数据，运用基本统计、线性回归、累积距平和信噪比分析了川南山区6个分区地温和气温的空间分布、变化趋势以及突变特征，分析并对比了地温和气温的关系。结果表明：川南山区年均地、气温变化范围分别在15.6~20.5 ℃和12.2~17.2 ℃之间，呈现出北低南高、高山低河谷高的空间分布格局。31 a来6个分区的年均地、气温均有显著上升趋势，但季节变化差异明显，冬季地、气温的增温率高于夏季。从不同区域来看，高山地带(Ⅵ区)的年、季增温趋势最为显著，是其他区域的2~6倍，且地、气温在1990年左右发生突变；河谷地带(Ⅱ区)的年、季温度变化最小且未发生突变。各区地温和气温呈极显著正相关(P<0.01)，具有较高的一致性，但也存在非对称增温现象。山地(Ⅲ、Ⅴ、Ⅵ区)的年均、季均地温和河谷(Ⅰ区)的春季地温增温比气温更加强烈，故地气温差出现显著上升趋势，甚至发生突变。

关键词： ; Times New Roman"; ,serif; ">soil surface temperature; air temperature; variation characteristics; the mountainous region of southern Sichuan

本文引用格式

王冰, 李启权, 罗琳, 王昌全, 杨娟, 余亮志 . 1981—2011年川南山区地温和气温的变化特征 [J]. 干旱区地理, 2019 , 42(6) : 1322 -1329 . DOI: 10.12118/j.issn.1000-6060.2019.06.10

Abstract

Soil surface temperature and air temperature are essential indicators of climate change, and had received growing attention. In this paper, variations of soil surface temperature and air temperature in the mountainous region of southern Sichuan from 1981 to 2011 was analyzed. The study area is lying on the east edge of Qinghai-Tibet Plateau, China, and is very sensitive to climate change. In order to better understand the temperature change status of this region, the study area was divided into six areas (labelled fromⅠto Ⅵ area) based on landform, soil type and main land use, and the meteorological data including daily soil temperature at 0 cm and daily air temperature were used to analyze the regionalization variation of temperature. The meteorological data were obtained from eight local weather stations, including eastern district of Panzhihua and Huili County, Leibo County, Muli County, Xichang City, Yanyuan County, Yuexi County as well as Zhaojue County of Liangshan Yi Autonomous Prefecture, Sichuan Province. The spatial distribution of mean soil surface temperature and air temperature were analyzed by basic stats, the trends of the temperatures were revealed by simple linear regression, the abrupt changes were determined by cumulative sum anomaly detection method and signal-to-noise ratio, and finally, the relationship between soil surface temperature and air temperature was discussed. The results suggest that the mean annual soil surface temperature and air temperature in the mountainous region of southern Sichuan ranged from 15.6 to 20.5 ℃ and 12.2 to 17.2 ℃ respectively, presenting a spatial distribution pattern with high values in the southern part and valleys, and low value in the northern part and high mountains. Both soil surface temperature and air temperature had significant increasing trends on the annual and seasonal scale, whereas the increasing rate was higher in winter than that in summer which meant the seasonal variations were obviously different. In six types of areas, the type Ⅵ area which lies in high mountainous region had the highest warming trend which is 2-6 times of other areas, and the abrupt changes of soil surface temperature and air temperature occurred around 1990；the typeⅡarea which is located at the Anning River valley had the lowest temperature change and there was not any abrupt change. The soil surface temperature and air temperature showed extremely significant positive correlation (P<0.01),indicating that they have high consistency. However, the asymmetric warming phenomenon also existed between two temperature indexes. In the whole year and four seasons in the mountainous regions (type Ⅲ, typeⅤ and type Ⅵ areas) and in the spring of the Jinsha River valley (type Ⅰ area),soil surface temperature warming showed a much stronger trend than the air temperature warming, thus difference between soil surface temperature and air temperature (Ts-Ta) presented significant increasing trend and even had abrupt change occurred. The results would be helpful to provide reference for predicting drought and flood disasters and building climate models. Different from the previous study which only analyzed soil surface temperature or air temperature, this paper compared two temperature indexes, and found that the asymmetric warming phenomenon between them was significant (P<0.05),suggested that not only the variations of soil surface temperature and air temperature should be noted, but also the impact of changes in the relationship of Ts-Ta on the climate system needs to be concerned.

Key words： ; font-size:10.5pt; ">地温; ; Times New Roman"; ,serif; font-size:10.5pt; "> ; font-size:10.5pt; ">气温; ; Times New Roman"; ,serif; font-size:10.5pt; "> ; font-size:10.5pt; ">变化特征; ; Times New Roman"; ,serif; font-size:10.5pt; "> ; font-size:10.5pt; ">川南山区

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