摘要
为定量探究安徽省气象干旱扰动下植被响应状况,利用2000—2020年气象站点数据和MODIS数据,分别计算气象干旱综合指数MCI和植被状态指数VCI,采用趋势拟合与相关性分析等方法,从灌溉区与雨养区差异与作物类型差异着手分析,结果表明:与灌溉区相比,雨养区植被长势与气象干旱相关程度明显更高,集中分布在淮河以北和东南部地区,4—5月最为明显;从作物类型差异看,3种主要作物植被长势对气象干旱的响应程度为水稻<玉米<小麦,实验结果可以为当地气象干旱应急管理提供参考。
To quantitatively investigate the vegetation response under the meteorological drought disturbance in Anhui Province,we used the me-teorological station data and MODIS data from 2000 to 2020 to calculate the meteorological drought composite index MCI and vegetation status index VCI,respectively.Then,we used trend fitting and correlation analysis to analyze the differences between irrigated and rain-fed areas and crop types,in order to provide reference for local meteorological drought emergency management.The results show that compared with the irri-gated areas,the correlation between vegetation growth and meteorological drought is significantly higher in rained areas,concentrated in areas north and southeast of the Huai River,most obvious in April and May.In terms of crop type differences,the response of vegetation growth of three major crops to meteorological drought is rice<corn<wheat.
作者
崔阳
孙洪泉
夏积德
CUI Yang;SUN Hongquan;XIA Jide(Yangling Vocational and Technical College,Yangling 712100,China;National Institute of Natural Disasters,MEMC,Beijing 100085,China)
出处
《地理空间信息》
2024年第2期102-105,共4页
Geospatial Information
基金
国家重点研发计划项目(2017YFC1502402)
杨凌职业技术学院科技创新项目(ZK22-27)
杨凌职业技术学院教育教学改革研究项目(JG22030)。
