Analysis of Spatiotemporal Changes in Net Primary Production in Shenyang City
The change characteristics of vegetation net primary productivity is an important basis for evaluating e-cosystem health and detecting urban resources and environment.Based on NPP data,DEM data and meteorologi-cal data of Shenyang City from 2000 to 2021,this paper quantitatively analyzes the distribution characteristics of the temporal and spatial of vegetation NPP in the study area,and reveals the correlation among the meteorological factors and vegetation NPP change.The results show that:① From the time dimension,the average annual NPP in Shenyang City shows a slow increasing trend from 2000 to 2021.② In spatial dimension,the spatial distribution of average NPP in Shenyang City has obvious difference,and the mean NPP of the eastern and northern hilly are-as is higher;The southeast and central and western regions are mainly human living areas,and the annual mean value of NPP is low.Most of the remaining areas are vast plains and located in peri-urban areas,with an average NPP in the middle.③ The average annual temperature mainly has a negative impact on vegetation NPP.The an-nual precipitation mainly has a positive impact on vegetation NPP,and the average annual temperature has a more significant impact on vegetation NPP than the annual precipitation in the study area.From 2000 to 2021,the aver-age annual net primary productivity of vegetation in Shenyang City showed a slow increase trend and the spatial distribution difference was obvious.The ecological system of the city is relatively stable.
net primary productiontemporal and spatial distributioninfluence factors
NETL
NSTL
万方数据
