Study on Relationship Between Coix Seed Vegetation Index and Meteorological Factors at Pixel Scale
The Normalized Vegetation Index(NDVI)can effectively reflect vegetation growth and spatial characteristics.In order to better understand the impact of meteorological conditions on the growth of Coix seed,this paper uses correlation analysis,T-test and other methods to conduct pixel by pixel analysis based on the remote sensing data of Liaoyang Coix seed growing region from 2013 to 2020 on the pixel scale,combined with the meteorological data of meteorological stations in the region from 2013 to 2020.The results indicate that at the level of multi-year time series,changes in meteorological factors during the growth season have a promoting effect on the growth of Coix seed vegetation.Temperature,precipitation,sunlight,relative humidity have significant positive correlations with Coix seed NDVI values,with temperature being the most correlated.Coix seed NDVI has the strongest sensitivity to the temperature in the previous month;In growing season,NDVI has the strongest hysteresis effect on temperature,followed by sunshine duration and relative humidity,and has no significant hysteresis effect on precipitation.The research results are of great significance for predicting the growth of Coix seed based on the ecological environment changes in the Coix seed planting area.
Coix seedmeteorological factorsNDVIcorrelation analysisclimatic conditionsair temperature sensitivitylag effect
NETL
NSTL
万方数据
