中国农业气象

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气候变化对云南气候生产潜力的影响

李蒙;朱勇;黄玮;   

  1. 云南省气候中心;
  • 出版日期:2010-06-10 发布日期:2010-06-10
  • 基金资助:
    公益性行业(气象)科研专项(GYHY200906023)

Influence of Climate Change on Climate Potential Productivity in Yunnan

LI Meng,ZHU Yong,HUANG Wei(Yunnan Climate Center,Kunming 650034,China)   

  • Online:2010-06-10 Published:2010-06-10

摘要: 利用1961-2009年云南省117个台站年平均气温、降水量资料和Thornthwaite Memorial模型计算分析云南省气候生产潜力(TSPV)的分布及年际变化特征,并模拟了未来气候变化情景下气候生产潜力的变化。结果表明:云南多年平均TSPV值为1439.2g.m-2.a-1,滇西北和滇东北最低,滇西南和滇东南最高;近49a云南全省以及各站的平均TSPV变化的年际变化不显著;云南TSPV利用率较低,实际粮食产量平均只占气候生产潜力的19%。在云南气温明显上升、降水略减少、年际波动大的气候变化趋势背景下,TSPV与降水的相关系数(P<0.01)大于气温,说明降水是当地TSPV的主要限制因素;敏感性分析显示,未来如果出现"暖湿型"气候对作物生长最为有利,出现"冷干型"对作物生长最为不利。而趋势分析表明,未来云南易出现"暖干型"气候,这不利于当地的农业生产。

关键词: 气候变化, 气候生产潜力, 云南

Abstract: In order to analyze how did climate changes of Yunnan affect climatic potential productivity(TSPV),the spatial distribution and annual change of TSPV were concluded from the average annual temperature, annual precipitation and Thornthwaite Memorial Model of 117 meteorological stations from 1961 to 2009,and TSPV changes were simulated in the background of climate changes in the future.The results showed that the average TSPV of Yunnan province was 1439.2 g m-2 per year,the lowest was in northeast and northwest,and the highest was in southeast and southwest.Generally speaking,for nearly 49 years the average of Yunnan province and annual change of each station was not prominent.The usage of TSPV in Yunnan province was low;the actual output of grain was only 19 percent of TSPV in average.In the background of obviously growing temperature,slightly decreasing precipitation and large annual changes,the correlation coefficient between TSPV and precipitation was more than that of TSPV and temperature.Precipitation was the main restricted factors to TSPV.The sensitivity analysis showed that the warm and wet climate would benefit to the TSPV,while the cold and dry climate would make an adverse impact on the TSPV in the future.And in the future,the warm and dry climate would come into being more easily,then TSPV would decrease,and it would be adverse to agricultural growth.

Key words: Climate change, Climate change, Climatic potential productivity, Yunnan