Abstract
Monitoring and forecasting the spatiotemporal dynamics of vegetation across the Loess Plateau emerge as critical endeavors for environmental conservation, resource management, and strategic decision-making processes. Despite the swift advances in deep learning techniques for spatiotemporal prediction, their deployment for future vegetation forecasting remains underexplored. This investigation delves into vegetation alterations on the Loess Plateau from March 2000 to February 2023, employing fractional vegetation cover (FVC) as a metric, and scrutinizes its spatiotemporal interplay with precipitation and temperature. The introduction of a convolutional long short-term memory network enhanced by an attention mechanism (CBAM-ConvLSTM) aims to forecast vegetation dynamics on the Plateau over the ensuing 4 years, leveraging historical data on FVC, precipitation, and temperature. Findings revealed an ascending trajectory in the maximum annual FVC at a pace of 0.42% per annum, advancing from southeast to northwest, alongside a monthly average FVC increment at 0.02% per month. The principal driver behind FVC augmentation was identified as the growth season FVC surge in warm-temperate semi-arid and temperate semi-arid locales. Precipitation maintained a robust positive long-term association with FVC (Pearson coefficient > 0.7), whereas the temperature–FVC nexus displayed more variability, with periodic complementary trends. The CBAM-ConvLSTM framework, integrating FVC, precipitation, and temperature data, showcased commendable predictive accuracy. Future projections anticipate ongoing greening within the warm-temperate semi-arid region, contrasted by significant browning around the Loess Plateau’s peripheries. This research lays the groundwork for employing deep learning in the simulation of vegetation’s spatiotemporal dynamics.
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Data availability
The datasets used and/or analyzed during the current study are available from the first author on reasonable request.
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Funding
This research was funded by The Strategic Priority Research Program of Chinese Academy of Sciences (XDB40020301), The Science and Technology Research Project of Chongqing Municipal Education Commission (Grant number: KJQN202100624) and Opening fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology) (Grant number: SKLGP2023K008).
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All authors contributed to the study conception and design. Yongcheng Gou: methodology, software, writing—original draft. Zhao Jin: methodology, writing—review and editing, Pinglang Kou: conceptualization, writing—review and editing. Yuxiang Tao: supervision, visualization, writing—review and editing. Qiang Xu: methodology, formal analysis. Wenchen Zhu: data curation. Haibo Tian: investigation.
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Gou, Y., Jin, Z., Kou, P. et al. Mechanisms of climate change impacts on vegetation and prediction of changes on the Loess Plateau, China. Environ Earth Sci 83, 234 (2024). https://doi.org/10.1007/s12665-024-11559-5
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DOI: https://doi.org/10.1007/s12665-024-11559-5