Based on the improved CASA Model,the annual and monthly high spatial resolution(30 m)net primary productivity(NPP)of 2021 Jinan was estimated through using a combination of multi-source satellite data.Also the temporal and spatial distribution characteristics of vegetation NPP were analyzed.The results showed that,the mean value of NPP in Jinan was 239.04 g·m-2·a-1,which showed the spatial distribution characteristics of high and low in the southern mountain area of northern plain.The annual vegetation NPP showed a single-peak pattern,which first increased and then decreased,and reached its peak in August,with obvious seasonal difference.The contribution of summer vegetation NPP to the annual NPP reached 58.06%.The correlation analysis showed that temperature had more influence on vegetation NPP than precipitation.Mixed forest is the largest vegetation type of NPP,and arable land and broad-leaved forest were the main types of vegetation in Jinan,accounting for 66.22%of the total NPP.
net primary productivity of vegetationCASA modelspace-time distributionhigh spatial resolutionJinan
NETL
NSTL
万方数据
