| 贵州省NDVI变化及其与主要气候因子的相关性 |
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| 引用本文： | 郑有飞,刘宏举,吴荣军,吴战平,牛鲁燕.贵州省NDVI变化及其与主要气候因子的相关性[J].生态与农村环境学报,2009,25(1). |
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| 作者姓名： | 郑有飞 刘宏举 吴荣军 吴战平 牛鲁燕 |
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| 作者单位： | 1. 南京信息工程大学环境科学与工程学院,江苏,南京,210044
2. 贵州省气象局山地环境气候研究所,贵州,贵阳,550000 |
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| 基金项目： | 贵州省气象局开放基金 |
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| 摘 要： | 运用全球检测与模型研究(GIMMS)组制作的取每隔15 d最大值合成的归一化差异植被指数(NDVI)数据集和贵州省84个气象站点提供的气候资料,分析1987-2003年贵州省植被变化状况以及NDVI与主要气候因子温度、降水的相互关系.结果表明: 17 a间贵州省年均NDVI呈现缓慢下降趋势,但春季NDVI出现了一定幅度的增长,年均NDVI下降主要是冬季NDVI大幅下降造成.植被变化在年际尺度上与温度和降水均无显著相关,但在季节尺度上与春季温度在α=0.05水平上显著相关.整体上看,春季NDVI与温度和降水的相关系数高于其他季节;温度与NDVI的同季相关高于滞后相关,而降水与NDVI的滞后相关却高于同季相关;与温度的相关性高于降水.
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| 关 键 词： | 贵州省 温度 降水 相关性 |
Correlation Between NDVI and Principal Climate Factors in Guizhou Province |
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| ZHENG You-fei,LIU Hong-ju,WU Rong-jun,WU Zhan-ping,NIU Lu-yan.Correlation Between NDVI and Principal Climate Factors in Guizhou Province[J].Journal of Ecology and Rural Environment,2009,25(1). |
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| Authors: | ZHENG You-fei LIU Hong-ju WU Rong-jun WU Zhan-ping NIU Lu-yan |
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| Institution: | 1.College of Environment Science and Engineering;Nanjing University of Information Science & Technology;Nanjing 210044;China;2.Institute of Mountainous Area Environment and Climate;Guizhou Meteorological Bureau;Guiyang 550000;China |
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| Abstract: | Based on the maximum NDVI dataset worked out every 15 days by GIMMS and the meteorological data gathered from 84 weather stations in Guizhou Province,variation of the vegetation in Guizhou and its NDVI in the period of 1987-2003,and their relations with major climate factors,temperature and rainfall,were analyzed.Results show that the annual mean NDVI in Guizhou Province demonstrated a declining trend in the 17 years,which is a result of the sharp drop of NDVI in winter,even though in spring NDVI rises a bi... |
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| Keywords: | NDVI |
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