The net primary productivity of vegetation(NPP)is an important index to evaluate the carbon sequestration capacity of vegetation and land use change.Using MOD17N3HGF NPP data,climate data and night-time light data fro...The net primary productivity of vegetation(NPP)is an important index to evaluate the carbon sequestration capacity of vegetation and land use change.Using MOD17N3HGF NPP data,climate data and night-time light data from 2000 to 2020,this study explored the relationship between NPP and urban expansion,land use and climate change in the Southern Part of Taihang Mountain through brightness gradient method,trend analysis,partial correlation analysis and contribution analysis.It aims to provide information support for urban and rural planning and ecological management in this region.Key findings include:Over the past 20 years,NPP in mountain areas has shown an overall fluctuating upward trend,with an“N”pattern related to altitude.The human activity area expanded by 9.9%,with expansion of highly active areas holding back NPP growth and moderately active areas contributing to it.The trend of climate change is gradually warming and wetting,and the correlation between precipitation and NPP is strong,while the correlation between temperature and NPP is weak.Compared with human activities(19.9%),precipitation was the main driver of NPP change,contributing significantly up to 79.5%.In the past 20 years,the ecological quality of the south Taihang Mountain region has improved significantly and actively responded to climate change,but human activities have led to spatial and temporal ecological differences.展开更多
基金funded by NSFC Regional Innovation Development Joint Fund Key Project(U21A20108)General Project of Natural Science Foundation of Henan Province(242300421365)+3 种基金Support Plan for Technological Innovation Teams in Henan Province’s Higher Education Institutions(22IRTSTHN008)General Project for Humanities and Social Sciences in Higher Education Institutions of Henan Province(2024ZZJH147)Co-fundedResearch Program of“Double First-class”Creation Project of Surveying and Mapping Science and Technology Discipline(GCCYJ202401).
文摘The net primary productivity of vegetation(NPP)is an important index to evaluate the carbon sequestration capacity of vegetation and land use change.Using MOD17N3HGF NPP data,climate data and night-time light data from 2000 to 2020,this study explored the relationship between NPP and urban expansion,land use and climate change in the Southern Part of Taihang Mountain through brightness gradient method,trend analysis,partial correlation analysis and contribution analysis.It aims to provide information support for urban and rural planning and ecological management in this region.Key findings include:Over the past 20 years,NPP in mountain areas has shown an overall fluctuating upward trend,with an“N”pattern related to altitude.The human activity area expanded by 9.9%,with expansion of highly active areas holding back NPP growth and moderately active areas contributing to it.The trend of climate change is gradually warming and wetting,and the correlation between precipitation and NPP is strong,while the correlation between temperature and NPP is weak.Compared with human activities(19.9%),precipitation was the main driver of NPP change,contributing significantly up to 79.5%.In the past 20 years,the ecological quality of the south Taihang Mountain region has improved significantly and actively responded to climate change,but human activities have led to spatial and temporal ecological differences.
