Temporal and Spatial Evolution Characteristics and Driving Factors of NPP in the Huaihe River Economic Belt
The Huaihe River Economic Belt is an important ecological security barrier for China's ecological civilization construc-tion and high-quality economic development,and is also a more sensitive ecosystem zone in the world.Based on NPP data,mete-orological data,elevation data and land use data,this paper analyzed the spatio-temporal evolution and driving factors of NPP in the Huaihe River Economic Belt from 2000 to 2022.The results showed that NPP in the Huaihe River Economic Belt showed a trend of fluctuation and increasing from 2000 to 2022,and its spatial distribution showed significant spatial heterogeneity with gradually decreasing from southeast to northwest.The persistence characteristics showed that the trend of reverse change was much larger than that of the same-direction change.The correlation between NPP and temperature and precipitation showed ob-vious regional differences,and all showed a mainly positive correlation.Among them,the correlation between precipitation and NPP was stronger.NPP presents a"high-low-high-low"and"high-low-high"trend with the increase of altitude and slope re-spectively,which is mainly affected by temperature difference and human activities.Cultivated land is the main contributor to NPP growth,while the driving force of urban and rural construction land on NPP growth is insufficient.
the Huaihe River Economic BeltNPPtemporal and spatial evolutioncorrelationdriving factor
NETL
NSTL
万方数据
