中国农学通报2026，Vol.42Issue(6)：150-163,14.
2001-2022年江苏NDVI变化及其对极端气候的响应
NDVI Variation and Its Response to Extreme Climate in Jiangsu During 2001-2022
摘要
Abstract
Based on NDVI remote sensing data and meteorological data of Jiangsu from 2001 to 2022,aiming at exploring the impact of extreme climate events on vegetation in Jiangsu,the paper calculated 18 extreme climate indices and employed the methods including Sen's trend analysis,Mann-Kendall(MK)test,R/S analysis,and Pearson correlation to analyze the spatio-temporal characteristics of extreme climate and vegetation changes,as well as their response relationships.The results showed that:(1)from 2001 to 2022,the annual maximum NDVI in Jiangsu exhibited a fluctuating downward trend,with a spatial pattern of'higher in the north and lower in the south';over the 22-year period,18.50%of the area in province experienced extremely significant degradation,while 9.62%showed extremely significant improvement;in the future,51.70%of the region might degrade.(2)In Jiangsu,both extreme high and low temperatures had intensified,with the magnitude of change in warm indices being greater than that in cold indices;the rate of daytime changes was higher than nighttime changes;extreme precipitation showed an overall increasing trend,with greater increases in the south compared to the central and northern regions.(3)NDVI and extreme temperature warm indices were mainly positively correlated in areas along the Huaihe River and to its north,while negative correlations dominated south of the Huaihe River;for cold indices,negative correlations were observed along the Yangtze River and the eastern coastal areas to the north of the river,whereas positive correlations prevailed in the central-western and southeastern coastal regions to the north of the Yangtze River;NDVI and extreme precipitation indices were mainly negatively correlated,with negative correlation areas exceeding 50%.In a word,the relationship between extreme climate and vegetation growth shows significant spatial heterogeneity,providing a scientific support for ecological conservation,vegetation restoration,and climate adaptation management in Jiangsu.关键词
NDVI/极端气候/时空变化/Hurst指数/江苏省Key words
NDVI/extreme climate/spatio-temporal change/Hurst index/Jiangsu分类
农业科技引用本文复制引用
徐恩,沈伟,周航,王锦杰,颜雅琼,姚海涛..2001-2022年江苏NDVI变化及其对极端气候的响应[J].中国农学通报,2026,42(6):150-163,14.基金项目
江苏省气象局北极阁基金科研项目"江苏城市(群)对极端小时降水影响的研究及数值模式评估"(KM202623) （群）
江苏省气象局指导性科研项目"江苏省极端气候事件与植被时空演变及响应关系研究"(ZD202424). （ZD202424）
