生态科学2023，Vol.42Issue(6)：222-232,11.DOI:10.14108/j.cnki.1008-8873.2023.06.024
气候与土地利用变化对粤港澳大湾区增强型植被指数时空变化影响
Effects of climate change and land use and land cover change on the variation of enhanced vegetation index in Guangdong-Hong Kong-Macao Greater Bay Area
摘要
Abstract
In order to understanding the variation of vegetation growth and the impact of climate change and land use and land cover change on vegetation,spatiotemporal dynamics of enhanced vegetation index(EVI),and its correlation with mean temperature and cumulative precipitation of the growing season,and also,the relationship between EVI and land use and land cover change were analyzed in Guangdong-Hong Kong-Macao Greater Bay Area(GBA)during 2001-2018 based on MOIDS EVI data,climate data and land cover type data.Our results indicated that(1)mean EVI value increased from middle and southeast of the study area to northeast,northwest and southwest.EVI value displayed an increase trend during 2001-2018,and the rate was approximately 0.003 EVI per year.However,EVI in the GBA displays a decreasing trend in the future for most part of the region;(2)the correlations between EVI and mean temperature as well as cumulative precipitation were almost positive,but the mean coefficient between EVI and cumulative precipitation was larger than that of mean temperature;the responses of EVI to mean temperature and cumulative precipitation were almost positive,and the mean responses value were 0.009 EVI/℃and 0.003 EVI/100mm,respectively;(3)land use and land cover change has a significant impact on EVI.Urban sprawl has a significantly negative effect on EVI(P<0.0001),while restoration has a significantly positive impact on EVI(P<0.0001).However,the effect of urban sprawl on EVI was larger than that of restoration.Our results can provide a reference for ecosystem variation,ecosystem restoration,urban ecological planning and ecological civilization construction in the GBA.关键词
EVI/气候变化/土地利用变化/相关性Key words
EVI/climate change/land use and land cover change/correlation分类
农业科技引用本文复制引用
温旭丁,罗赵慧,符良刚..气候与土地利用变化对粤港澳大湾区增强型植被指数时空变化影响[J].生态科学,2023,42(6):222-232,11.基金项目
国家自然科学基金(42001214) （42001214）
广州市科技计划项目(201904010288) （201904010288）
中央公益性科研院所基本科研业务专项(PM-zx703-201904-139) （PM-zx703-201904-139）
