Based on MOD17A3H data, the gravity center model, partial correlation analysis and geographical detector methods were used to reveal the spatiotemporal evolution patterns of vegetation NPP in China from 2000 to 2022 from a regional perspective, and to elucidate the response mechanisms of vegetation NPP to climate and human activities in different ecological subregions and historical periods. The results indicated that: (1) The overall spatial distribution of vegetation NPP in China showed a pattern of higher values in the south and lower in the north, and higher in the east and lower in the west, with spatial heterogeneity in the distribution across ecological subregions; (2) The gravity center of NPP in the northeast, northwest, and north China regions had shifted southward, while in the southwest, central south, and east China regions, it had shifted northward; (3) Human activities dominated the increase in NPP from 2000 to 2009, whereas climate change dominated the increase from 2010 to 2022; (4) The partial correlations between different factors and NPP exhibited spatial heterogeneity; (5) The interactive effects of human activity factors had strengthened in the north China region, while human activities had a weaker impact on NPP in the southwest region.
YANGXiao, GUOBing, HANBaomin,et al. Analysis of the spatial-temporal evolution patterns of NPP and its driving mechanisms in the Qinghai‑Tibet Plateau[J]. Resources and Environment in the Yangtze Basin,2019,28(12): 3038-3050.
TANGQianyu, LIYuanhang, HUMengran,et al. Analysis of the spatiotemporal variations in heavy rainfall eventsin the Taihang Moutainous Region from 1973 to 2022[J]. Journal of Xinyang Normal University (Natural Science Edition),2024,37(4): 524-531.
[7]
RUNNINGS W, HUNTJR E R. Generalization of a forest ecosystem process model for other biomes,BIOME-BGC,and an application for Global-Scale Models-Scaling Physiological Processes-8[J]. Scaling Physiological Processes,1993: 141-158.
[8]
POTTERC S, RANDERSONJ T, FIELDC B,et al. Terrestrial ecosystem production: A process model based on global satellite and surface data[J]. Global Biogeochemical Cycles,1993,7(4): 811-841.
XUYong, ZHENGZhiwei, MENGYuchi,et al. Spatio-temporal variation in Net Primary Productivity of different vegetation types and its influencing factors exploration in Southwest China[J]. Environmental Science,2024,45(1): 262-274.
JIPanpan, GAOMinhua, YANGXiaodong. Analysis of NPP driving force in an arid region of Northwest China: A case study in Yili Valley and parts of Tianshan mountains,Xinjiang,China[J]. Acta Ecologica Sinica,2019,39(8): 2995-3006.
WANGYaobin, ZHAOYonghua, HANLei,et al. Spatiotemporal variation of vegetation net primary productivity and its driving factors from 2000 to 2015 in Qinling-Daba Mountains,China[J]. Chinese Journal of Applied Ecology,2018,29(7) : 2373‑2381.
SUNYuxun, ZHANGChenguang, LIUYize,et al. Characteristics of temperature change and its response to ENSO Eventsin Henan province during 1970—2019[J]. Journal of Xinyang Normal University (Natural Science Edition), 2023,36(4): 528-534.
CHENXiaojie, ZHANGChangcheng, ZHANGJinting,et al. Analysis of the spatiotemporal evolution patterns of vegetation Net Primary Productivity and its influencing factors based on CASA mode[J]. Research of Soil and Water Conservation, 2022,29(3): 253-261.
ZHOUKanshe, DUJun, SHENXu,et al. Spatial and temporal variability of vegetation Net Primary Productivity in Qiangtang National Nature Reserve under climate change[J]. Chinese Journal of Agrometeorology, 2021,42(8): 627-641.
ZHOUYanyan, ZHUMinxiang, GUOXiaojuan,et al. Relative effects of climate change and human activities on Net Primary Productivity in Shule River Basin[J].Acta Ecologica Sinica,2019,39(14) : 5127-5137.
XinLYU, WANGJuanle, KANGHaijun,et al. Spatio-temporal changes of grassland production based on MODIS NPP in the Three-River Source Region from 2006 to 2015[J]. Journal of Natural Resources,2017,32(11):1857-1868.
ZHONGMingxing, GUOShaoru, AIXia,et al. Change characteristics of tourism climate comfort in Xinyang during the past 60 years[J]. Journal of Xinyang Normal University ( Natural Science Edition ),2024,37(3): 292-297.
SHIZhiyu, WANGYating, ZHAOQing,et al. The spatiotemporal changes of NPP and its driving mechanisms in China from 2001 to 2020[J]. Ecology and Environmental Sciences,2022,31(11): 2111-2123.
MAODehua. Quantitative assessment in the impacts of human activities on Net Primary Productivity of wetlands in the Northeast China[D]. Beijing: University of Chinese Academy of Sciences,2014.
HUANGYueyue. Spatial-temporal distribution and driving factors of vegetation Net Primary Productivity in North China Plain from 2000 to 2018[D]. Lanzhou: Northwest Normal University,2020.
TONGLinjing, LIUYangyang, WANGQian,et al. Spatial and temporal dynamics of Net Primary Productivity and its driving factors in Northwest China[J]. Research of Soil and Water Cons, 2019,26(4): 367-374.
CHENShuting, GUOBing, YANGFei,et al. Spatial and temporal patterns of NPP and its response to climate change in the Qinghai-Tibet Plateau from 2000 to 2015[J]. Journal of Natural Resources,2020,35(10): 2511-2527.