地理科学进展 ›› 2009, Vol. 28 ›› Issue (1): 18-24.doi: 10.11820/dlkxjz.2009.01.003

• 气候变化 • 上一篇    下一篇

近50 年来云南气候带的变化特征

程建刚1, 王学锋2, 范立张2, 杨晓鹏2, 杨鹏武2   

  1. 1. 云南省气象局, 昆明650034;
    2. 云南省气候中心, 昆明650034
  • 收稿日期:2008-10-01 修回日期:2008-12-01 出版日期:2009-01-24 发布日期:2009-01-24
  • 通讯作者: 王学锋, E-mail: wxf.yncc@yahoo.com.cn E-mail:wxf.yncc@yahoo.com.cn
  • 作者简介:程建刚(1960-),男,云南人,高级工程师,主要研究方向为气候和气候变化.E-mail: cjg20012001@yahoo.com.cn
  • 基金资助:

    云南省自然科学基金重点项目"云南重大气候灾害形成机理研究"(2003D0014Z); 云南省气象局多轨道业务研究专 项"动力模式产品在云南短期气候预测的应用研究".

Variations of Yunnan Climatic Zones in Recent 50 Years

CHENG Jiangang1, WANG Xuefeng2, FAN Lizhang2, YANG Xiaopeng2, YANG Pengwu2   

  1. 1. Yunnan Provincial Meteorological Bureau, Kunming 650034, China;
    2. Yunnan Climate Center, Kunming 650034, China
  • Received:2008-10-01 Revised:2008-12-01 Online:2009-01-24 Published:2009-01-24

摘要:

利用云南115 个气象观测站1961-2006 年逐日平均气温求算稳定≥10℃积温,并对积温资料按年代建立 与海拔、经度和纬度相关联的小网格推算模型,再应用地理信息系统(GIS)订正到0.01×0.01°网格点,得出云南5 个 不同年代细网格积温分布。在此基础上划分7 个气候带地理分布图,并分别计算其面积。据此分析,近50 年来云南 气候带总体上呈现热带亚热带范围扩大、温带范围减少的变化趋势,其中以北热带增加最明显,增幅达到90.2%; 而南温带减少最明显,减幅为12.5%。在年代际变化上,1960-1970 年表现出热带亚热带范围减小,温带范围增加; 从1970 年后则呈现热带亚热带范围快速增加,温带范围减小的趋势,而1990 年代以来是气候带变化最大的时期。

关键词: 地理信息系统, 气候带, 时空分布, 云南

Abstract:

Using 1961-2006 daily average temperature from 115 meteorological observation stations in Yunnan Province, the accumulated temperature (≥10℃) was calculated. This paper built the small reckon model by the altitude, longitude and latitude difference with a decade, and revised into the 0.01°×0.01° grid points by GIS. We obtain the distribution of the small grid accumulated temperature in five decades. Then we divided Yunnan into seven climatic zones, and calculated their area. The study has been conducted on seven climatic zones in Yunnan during five periods since the 1960s, which shows increasing/decreasing trends in the size of tropical and subtropical/ temperate zones as a whole. It is distinct that North Tropical/South Temperate Zone experienced an increase of 90.2%/a decrease of 12.5%. As far as interdecadal variability is concerned, it shows a decreasing/an increasing trend in the size of tropical and subtropical/temperate zone during the 1960s-1970s. It has a significant increasing/decreasing trend in the size of tropical and subtropical/temperate zone after the 1970s, and especially marked change has happened since the 1990s.

Key words: climatic zones, GIS, spatial and temporal distributions, Yunnan