中文摘要：

根据2000-2011年江苏省中分辨率成像光谱仪—归一化植被指数（MODIS-NDVI）数据和13个气象站点每日气温和降水数据,分析了江苏省NDVI与气温和降水间的相关性,根据4个时滞期（前0-前3月）,计算了13个气象站点NDVI与同期及前期（前1-前3月）气温和降水之间的相关系数,并得出相应的时空分布特征和时滞期。研究结果表明：1在整个研究区,NDVI与气温和降水均显著相关,且气温影响程度高于降水;2空间上,NDVI对气温变化的响应在整个研究区都很显著,且最大相关系数为苏南〉苏北〉苏中,而对降水的响应存在较大的差异,NDVI对降水变化响应的最大相关系数为苏北〉苏中〉苏南;3NDVI在多数地区与当月气温变化同步响应,仅吴县东山NDVI对前1月气温变化的响应最为强烈,NDVI对降水变化在整个研究区呈现不同的滞后期,但以滞后1个月为主;4不同时间、研究尺度、气候区和植被类型等条件下,NDVI对气温和降水变化响应的相关性和时间滞后性还需进一步探讨。

英文摘要：

The correlation between NDVI and temperature / precipitation was analyzed based on the MODIS-NDVI data and the daily temperature / precipitation data of 13 meteorological stations from 2000 to 2011 in Jiangsu province. According to 4different time lags（0-3 month lag）, the correlation between the NDVI of 13 meteorological stations and temperature /precipitation in the same and earlier period（1-3 month lag） was calculated. The corresponding spatial and temporal distribution characteristics and time lags were obtained. The results showed that in the studied area, NDVI was significantly correlated with temperature and precipitation. The impact of temperature was more obvious than that of precipitation. Spatially,the response of NDVI to temperature change was significant in the studied area. The maximum correlation coefficient in Southern Jiangsu was higher than that in Northern Jiangsu and Central Jiangsu. The response to precipitation was quite different. The maximum correlation coefficient of the response of NDVI to precipitation in Northern Jiangsu was higher than that in Central Jiangsu and Southern Jiangsu. In most areas, NDVI responded to the temperature of current month synchronously. Only the NDVI of Wuxian Dongshan responded to the temperature of previous month intensely. The impact of NDVI on precipitation changes had different lags throughout the studied area and mostly lagged one month. Under different times, scale, climate zones or vegetation types, the correlation and time lags between NDVI and temperature / precipitation are still needed to be further discussed.