Author:
Cui Linli,Shi Jun,Xiao Fengjin
Abstract
Abstract
Background
Vegetation phenology can characterize ecosystem functions and plays a key role in the dynamics of plant productivity. Here we investigated the changes in growing season metrics (start of growing season, SOS; end of growing season, EOS; length of growing season, LOS) and their relationships with net primary productivity (NPP) in forestland and grassland in China during 1981–2016.
Results
SOS advanced, EOS delayed, LOS prolonged and NPP increased significantly in 23.7%, 21.0%, 40.5% and 19.9% of the study areas, with an average rate of 3.9 days decade−1, 3.3 days·decade−1, 6.7 days·decade−1 and 10.7 gC m−2·decade−1, respectively. The changes in growing season metrics were obvious in Northwest China (NWC) and North China (NC), but the least in Northeast China (NEC). NPP was negatively correlated with SOS and positively correlated with EOS and LOS in 22.0%, 16.3% and 22.8% of the study areas, respectively, and the correlation between NPP and growing season metrics was strong in NWC, NC and Southwest China (SWC), but weak in NEC and South China (SC).
Conclusion
The advanced SOS, delayed EOS and prolonged LOS all contribute to the increased NPP in forestland and grassland in China, especially in NWC, NC and SWC. This study also highlights the need to further study the response of NPP to growing season changes in different regions and under the influence of multiple factors.
Funder
Major Program of the National Natural Science Foundation of China
Natural Science Foundation of Shanghai
National Key R&D Program of China
Publisher
Springer Science and Business Media LLC
Subject
General Earth and Planetary Sciences,Earth and Planetary Sciences (miscellaneous),Management, Monitoring, Policy and Law,Global and Planetary Change
Reference44 articles.
1. IPCC. Climate change 2021: the physical science basis. contribution of working group I to the sixth assessment report of the intergovernmental panel on climate change. Cambridge: Cambridge University Press; 2021.
2. Zhang Y, Yang P, Gao Y, Leung RL, Bell ML. Health and economic impacts of air pollution induced by weather extremes over the continental U.S. Environ Int. 2020;143: 105921.
3. Richardson AD, Keenan TF, Migliavacca M, Ryu Y, Sonnentag O, Toomey M. Climate change, phenology, and phenological control of vegetation feedbacks to the climate system. Agric Meteorol. 2013;169:156–73.
4. Ma R, Xia C, Liu Y, Wang Y, Zhang J, Shen X, et al. Spatiotemporal change of net primary productivity and its response to climate change in temperate grasslands of China. Front Plant Sci. 2022;13: 899800.
5. Shen X, Liu Y, Zhang J, Wang Y, Ma R, Liu B, et al. Asymmetric impacts of diurnal warming on vegetation carbon sequestration of marshes in the Qinghai Tibet Plateau. Glob Biogeochem Cycles. 2022;36(7):e2022GB007396.
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献