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锡林郭勒草原生长季地—气温度变化特征及相关性

杨丽萍1李丹1秦艳2张存厚1
Oxana Vishnyakova3吕迪波1   

  1. 1.内蒙古生态与农业气象中心,内蒙古呼和浩特010051;2.中国农业科学院草原研究所,
    内蒙古呼和浩特010010;3.俄罗斯科学院西伯利亚分院普通与实验生物学研究所,俄罗斯乌兰乌德670047
  • 出版日期:2016-08-31 发布日期:2016-08-31
  • 通讯作者: 秦艳,女,博士,高级工程师,主要从事草类种子与种质资源研究. E-mail:qinyan_80@163.com
  • 作者简介:杨丽萍,女,博士,高级工程师,主要从事生态气象、遥感等领域研究. E-mail:ylp725121@126.com
  • 基金资助:

    内蒙古自然科学基金(2014MS0352)、国家自然科学基金(31200540)、国家重点基础研究发展计划(“973”计划)(2014CB1388011)、中国农业科学院创新工程(CAAS-ASTIP-IGR2015-04)、国家“十二五”科技支撑计划(2012BAD13B07)和国家牧草产业技术体系项目(CARS-35-29)共同资助

Variation Characteristics of Air Temperature and Ground Temperature and Their
 Correlation in Xilinguole Grassland During Growing Season from 1960 to 2014

YANG Liping1, LI Dan1, QIN Yan2, ZHANG Cunhou1Oxana Vishnyakova3, LV Dibo1   

  1. 1. Ecology and Agricultural Meteorological Centre, Inner Mongolia Meteorological Bureau, Hohhot 010051, China;
    2. Grassland Research Institute, Chinese Academy of Agricultural Science, Hohhot 010010, China;
    3. Institute of General and Experimental Biology, Siberian Branch, Russian Academy of Sciences, Ulan-Ude 670047, Russia
  • Online:2016-08-31 Published:2016-08-31

摘要:

利用锡林郭勒草原8个气象站1960—2014年5—9月气温和0~40 cm地温逐旬观测资料,采用线性倾向估计、5 a滑动平均、线性回归等统计方法,分析锡林郭勒草原生长季地—气温度的变化特征及相关关系。结果表明:近55 a来,锡林郭勒草原生长季地—气温度都呈显著上升趋势,“前冷后暖”特点十分明显,且0~20 cm地温的增幅远高于气温,40 cm地温增幅则低于气温。生长季地—气温度月变化呈“低—高—低”抛物线形状,最高值出现在7月。5—8月地温随土层深度增加而下降,而9月地温随深度变化不明显。各层地温与气温呈显著正相关,且随深度增加相关性逐渐减小;地—气温度线性关系模型在各层拟合效果较好,用于预测和估算各层地温,基本可以满足该地区牧业生产实践的需要。

关键词: 锡林郭勒草原, 地温, 气温, 相关关系

Abstract:

Based on the 10-day air temperature and ground temperature at 0 cm, 5 cm, 10 cm, 15 cm, 20 cm, 40 cm depths of 8 weather stations in Xilinguole grassland from May to September during 1960-2014, the variation characteristics of air temperature and ground temperature and their correlation during growing season were analyzed by using the statistic methods of linear tendency estimation, 5-year moving mean, linear regression. The results show that the air temperature and ground temperatures in different depths during growing season all presented significant rising trend in Xilinguole grassland in recent 55 years, the characteristic with ‘previous cooling and later warming’ was very obvious, and the rising rates of ground temperature at 0 cm, 5 cm, 10 cm, 15 cm and 20 cm depths were much higher than that of air temperature, while for ground temperature at 40 cm depth it was lower than that of air temperature. The monthly changes of air temperature and ground temperature during growing season showed parabola shape with ‘low-high-low’, the peak was in July. The ground temperature decreased with increase of soil depth from May to August, while it didn’t change almost in September. There was significantly positive correlation between ground temperature in different depths and air temperature, and the correlation decreased with increase of soil depth. The fitting effect of the linear regression model between air temperature and ground temperature in each layer was better, and the model could be used to predict and estimate ground temperature in different depths, the predicting result could basically meet the needs of stockbreeding production in Xilinguole grassland.

Key words: Xilinguole grassland, ground temperature, air temperature, correlation

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