吴健生, 任奕蔚, 张曦文. 2004—2013年云南省春旱时空特征分析[J]. 云南大学学报(自然科学版), 2016, 38(6): 897-902. doi: 10.7540/j.ynu.20160188
引用本文: 吴健生, 任奕蔚, 张曦文. 2004—2013年云南省春旱时空特征分析[J]. 云南大学学报(自然科学版), 2016, 38(6): 897-902. doi: 10.7540/j.ynu.20160188
WU Jian-sheng, REN Yi-wei, ZHANG Xi-wen. On spatial-temporal analysis of drought in Yunnan Province from 2004 to 2013[J]. Journal of Yunnan University: Natural Sciences Edition, 2016, 38(6): 897-902. DOI: 10.7540/j.ynu.20160188
Citation: WU Jian-sheng, REN Yi-wei, ZHANG Xi-wen. On spatial-temporal analysis of drought in Yunnan Province from 2004 to 2013[J]. Journal of Yunnan University: Natural Sciences Edition, 2016, 38(6): 897-902. DOI: 10.7540/j.ynu.20160188

2004—2013年云南省春旱时空特征分析

On spatial-temporal analysis of drought in Yunnan Province from 2004 to 2013

  • 摘要: 21世纪以来,云南省频繁发生春旱,严重影响了人类活动与自然环境.为更科学地抗旱防旱,运用MODIS遥感数据,计算归一化干旱指数NDDI,分析了云南省2004—2013年春旱的时空变化特征.结果表明:研究期内,云南省春旱反复发生,空间差异增大,其中2010、2013年旱情较为严重;云南省东部、北部旱情严重,西南部较轻微;NDDI高值区集中于东南部与中北部,低值区集中于西北部与东北部;10年间云南北部地区旱情严重加剧,南部则有所缓解;易旱植被类型主要为草原和耕地.

     

    Abstract: Since the twenty-first Century,the frequent occurrence of drought in Yunnan Province has exerted a serious impact on human activities and natural environment.This paper has tried to use MODIS remote sensing data,based on Normalized Difference Drought Index,to analyze the temporal and spatial variation characteristics of drought in Yunnan Province from 2004 to 2013,aiming at more scientific control and prevention of drought.The results show that during the study period,spring drought in Yunnan Province has occurred repeatedly,presenting increasing spatial variability.The droughts that occurred in 2010 and 2013 are the most serious.Drought in eastern and northern part of Yunnan Province was severe kind,while that in southwest was slight.High value areas of NDDI appear in the southeastern and central north,while low value areas in the northwest and northeast.During recent 10 years,drought has aggravated in northern Yunnan,and mitigated in southern Yunnan.

     

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