The meteorological effects of vegetation and ecological system services in the middle reaches of the Yangtze River from 2000 to 2021
In the middle reaches of the Yangtze River basin,there are many wetlands and lakes with high vegetation coverage,which play an important role in increasing carbon sink,water conservation,soil and water conservation,and is an important ecological security barrier in China.Based on multi-source data of Medium resolution Imaging Spectrum(MODIS),Fengyun Meteorological satellite and monthly meteorological data,this study evaluates the spatio-temporal changes of meteorological conditions and vegetation ecological indicators such as net primary productivity(NPP),vegetation coverage,and vegetation ecological quality index in the middle reaches of the Yangtze River basin from 2000 to 2021.Meanwhile,the temporal and spatial trends of ecosystem service function(soil conservation function,water conservation function)and the influence of meteorological conditions on ecosystem service function in the middle reaches of Yangtze River basin since 2000 were also studied.The results show that from 2000 to 2021,the meteorological conditions in the middle reaches of the Yangtze River basin generally show an increasing trend,with an average annual increase of 7.3 mm in precipitation and 0.03℃in average annual temperature.Better hydrothermal conditions promote vegetation growth,and the average annual increase of NPP and vegetation coverage is 5.1 gC/m2 and 0.5%,respectively.The regional ecosystem service function also showed a fluctuating trend,with the average annual increase of water conservation and soil conservation of 2.89 mm and 4.96 t/hm2,respectively.The meteorological impact on ecosystem services in the middle reaches of the Yangtze River basin from 2000 to 2021 is mainly reflected in precipitation,which has a significant positive correlation with water conservation and soil conservation,while the temperature correlation is poor,indicating that precipitation is an important meteorological factor affecting ecosystem services in the middle reaches of the Yangtze River basin.This study reveals the impacts of climate change on ecosystem service functions in the middle reaches of the Yangtze River basin from 2000 to 2021,and provides meteorological basis for effectively protecting wetland and vegetation ecological construction,as well as disaster prevention and reduction.
Meteorological conditionsvegetation ecological qualityecosystem service functions
NETL
NSTL
万方数据
