武汉都市圈植被NDVI变化特征及其对气候变化的响应  

Characteristics of NDVI vegetation changes and its response to climate change in Wuhan metropolitan area

作　　者：崔利芳 许馨 牛自耕 祝慧敏 CUI Li-fang;XU Xin;NIU Zi-geng;ZHU Hui-min(School of Geography and Tourism,Huanggang Normal University,Huanggang 438000,Hubei,China;Hubei Key Laboratory of Critical Zone Evolution,China University of Geosciences,Wuhan,430074,Hubei,China)

机构地区：[1]黄冈师范学院地理与旅游学院,湖北黄冈438000 [2]中国地质大学(武汉)流域关键带演化湖北省重点实验室,湖北武汉430074

出　　处：《黄冈师范学院学报》2023年第3期43-48,共6页Journal of Huanggang Normal University

基　　金：湖北省教育厅中青年人才项目(Q20212903);流域关键带演化湖北省重点实验室开放基金项目(2021F03);黄冈师范学院大学生创新创业项目(202110514141)。

摘　　要：本文以SPOT/VEGETATION NDVI卫星遥感数据为基础,结合气温数据、降水数据对武汉都市圈归一化植被指数(NDVI)的时空分布特征和变化趋势进行分析,采用相关分析方法对1998-2015年武汉都市圈植被NDVI与气候因子的相关性进行分析。结果表明:在空间分布上,年平均植被NDVI整体呈现出四周高中间低的空间分布格局,武汉都市圈植被生长状况较好;在时间尺度上,NDVI以0.006/a的速率显著增加;年平均气温表现为波动下降趋势,下降速率为0.02℃/10a,年平均降水量以68.6 mm/10a的速率呈下降趋势,但两者的变化趋势都没通过显著性检验;年际植被NDVI与气温、降水量显著相关的面积比为12.9%和13.2%,其中与气温显著正相关的面积大于负相关面积,而与降水显著负相关的面积大于正相关面积。因此,武汉都市圈植被整体呈稳定恢复趋势,气候变化促进了植被NDVI增加。This paper analyzed the temporal and spatial distribution characteristics and changing trends of Normalized Difference Vegetation Index(NDVI)in Wuhan metropolitan area based on SPOT VEGETATION NDVI satellite remote sensing data,combined with temperature and precipitation data.The correlation analysis method was used to analyze the correlation between vegetation NDVI and climatic factors in Wuhan metropolitan area during 1998-2015.The results show that:the average vegetation NDVI as a whole presents a spatial distribution pattern of high,middle and low all around;On the time scale,the annual average NDVI increased significantly at a rate of 0.006/a;the annual average temperature showed a fluctuating downward trend,with a decreasing rate of 0.02℃/10a,while the annual average precipitation showed a downward trend at a rate of 68.6mm/10a;the area ratios of vegetation NDVI significantly correlated with temperature and precipitation were 12.9%and 13.2%.The area of vegetation NDVI significantly positively correlated with temperature was larger than the negative correlation area,while the area significantly negatively correlated with precipitation was greater than positive correlation area.Therefore,the overall vegetation of Wuhan urban circle showed a stable recovery trend,and climate change promoted the increase of vegetation NDVI.

关 键 词：NDVI 气温 降水 武汉都市圈 

分 类 号：Q948[生物学—植物学]