WANG C Y, ZHANG H, WU X F, et al.Spatio-temporal variation analysis of vegetation net primary productivity in Hebei Province from 2001 to 2019[J].Journal of Henan Polytechnic University(Natural Science) ,2023,42(3):69-77.

doi:10.16186/j.cnki.1673-9787.2021070105

Received:2021/07/28

Revised:2022/01/06

Published:2023/05/25

Spatio-temporal variation analysis of vegetation net primary productivity in Hebei Province from 2001 to 2019

WANG Chunyang, ZHANG Huan, WU Xifang, DUAN Yan, LI Changchun, ZHANG Hebing

School of Surveying and Mapping and Land Information Engineering，Henan Polytechnic University，Jiaozuo 454000，Henan，China

Abstract:In order to study the temporal and spatial change and driving mechanism of vegetation NPP in Hebei Province，based on the vegetation NPP data，land cover type data and meteorological data in Hebei Province from 2001 to 2019，a quantitative study was made on the change characteristics of vegetation NPP in Hebei Province by using the combination of univariate linear regression analysis and correlation analysis.The results showed that：（1）In terms of time，NPP in Hebei Province showed an increasing trend from 2001 to 2019，and the annual mean value of NPP varied from 237.55 to 354.36 g/m²；（2）Spatially，the average annual NPP distribution of vegetation in Hebei Province generally showed the characteristics of high in the north，low in the south，high in the northeast and low in the southwest，which was in line with the law of geographical differentiation，and the high-value areas were mostly distributed in the mountains in the north and west of Hebei Province；（3）From 2001 to 2019，the area of positive correlation between vegetation NPP and precipitation in Hebei Province was as high as 93.14%，and the area of negative correlation with temperature was 78.96%.At the same time，the spatial distribution of vegetation NPP in Hebei Province was also related to the distribution of vegetation types.The vegetation NPP in woodland was the highest and the fastest growing.

Key words:Hebei Province;net primary productivity;MODIS data;climate factor;land use change

2001—2019年河北省植被NPP时空变化分析_王春阳.pdf