关中平原城市群气候变化和人类活动对植被NDVI变化的影响  

Effect of Climate Change and Human Activities on NDVI Changes in Vegetation in the Guanzhong Plain Urban Agglomeration

作　　者：田晓凤 张翀[1] 李俞 TIAN Xiao-feng;ZHANG Chong;LI Yu(Shaanxi Provincial Key Laboratory of Disaster Monitoring and Mechanism Simulation,Baoji University of Arts and Sciences,Baoji,Shaanxi 721013)

机构地区：[1]宝鸡文理学院陕西省灾害监测与机理模拟重点实验室,陕西宝鸡721013

出　　处：《安徽农业科学》2024年第5期68-73,78,共7页Journal of Anhui Agricultural Sciences

基　　金：陕西省社会科学基金项目(2020D008);陕西省自然科学基础研究计划项目(2021JM-513);陕西省教育厅科学研究计划项目(21JK0475);陕西省教育厅专项科研计划项目(21JK0477);宝鸡文理学院第十五批校级教改资助项目(YJ20JGYB12)。

摘　　要：[目的]研究关中平原城市群气候变化和人类活动对植被NDVI变化的影响。[方法]基于2001—2020年的植被NDVI和地表温度数据,运用趋势分析和残差分析等方法分析近20年关中平原城市群植被生长季植被NDVI变化趋势,以及气候变化和人类活动对生长季植被NDVI的驱动力分析及其贡献率。[结果]近20年来研究区生长季植被NDVI呈波动性增加趋势,其变化受气候变化和人类活动共同影响,且存在较大空间异质性,研究区中部生长季植被NDVI降低主要归因于人类活动的影响。气候变化和人类活动对生长季植被NDVI贡献率主要为正值,人类活动因素的贡献率更高,且研究区水系两侧多呈现气候变化抑制、人类活动促进的情况。[结论]关中平原城市群中人类活动对生长季植被NDVI的影响较大,建议在综合因素分析中多重视人类活动影响。[Objective]To study the effect of climate change and human activities on NDVI changes in vegetation in the Guanzhong Plain urban agglomeration.[Method]Based on vegetation NDVI and surface temperature data from^(2)001 to 2020,trend analysis and residual analysis were used to analyze the trend of vegetation growth season vegetation NDVI change in the Guanzhong Plain urban agglomeration in the past 20 years,as well as the driving forces and contribution rates of climate change and human activities on vegetation growth season vegetation NDVI.[Result]In the past 20 years,the vegetation NDVI in the growth season of the study area had shown a fluctuating increase trend,and its change was jointly affected by climate change and human activities,and there was a large spatial heterogeneity.The reduction of vegetation NDVI in the growth season of the middle of the study area was mainly due to the impact of human activities.The contribution rate of climate change and human activities to the vegetation NDVI during the growing season was mainly positive,and the contribution rate of human activity factors was higher.Moreover,both sides of the water system in the study area mostly exhibit climate change inhibition and human activity promotion.[Conclusion]The human activities have a significant impact on vegetation NDVI during the growth season in the Guanzhong Plain urban agglomeration.It is recommended to pay more attention to the impact of human activities in comprehensive factor analysis.

关 键 词：生长季植被NDVI 气候变化 人类活动 残差分析 关中平原城市群 

分 类 号：X173[环境科学与工程—环境科学]