Abstract
Based on the GIMMS NDVI3g data from 1982 to 2015, this paper uses trend analysis, Mann-Kendall test and R/S analysis methods to explore the spatial- temporal variation and future trends of NDVI in the Pearl River Basin, in order to provide basis for the improvement of ecological problems in the area. The results show that: (1) In terms of time, the NDVI of the Pearl River Basin showed a fluctuating upward trend as a whole from 1982 to 2015, and it was extremely significant (P < 0.01); (2) In terms of space, the vegetation coverage was generally better in 34 years; the low and medium vegetation coverage areas (NDVI < 0.6) only accounted for 2.78% of the study area, which were concentrated in the Pearl River Delta region in the lower reaches of the Pearl River Basin; (3) In the trend analysis, NDVI showed an increasing trend in 34 years, and it accounted for 81.44% of the study area, mainly distributed in the upper reaches of the Yunnan-Guizhou Plateau and the middle reaches of the area; (4) In the future trend, the area with H > 0.75 accounts for 51.71%, indicating that the vegetation coverage will continue to increase in the future.
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Acknowledgements
This research was supported by the national Natural Science Foundation of China (41801071;42061059); the NaturalsScience Foundation of Guangxi (2020JJB150025); Bagui Scholars Special Project of Guangxi; Research Project of Guilin University of Technology (GUIQDJJ2019046).
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He, C., Ma, B., Jing, J., Xu, Y., Dou, S. (2021). Spatial-Temporal Variation and Future Changing Trend of NDVI in the Pearl River Basin from 1982 to 2015. In: Zu, Q., Tang, Y., Mladenović, V. (eds) Human Centered Computing. HCC 2020. Lecture Notes in Computer Science(), vol 12634. Springer, Cham. https://doi.org/10.1007/978-3-030-70626-5_22
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DOI: https://doi.org/10.1007/978-3-030-70626-5_22
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