Historical variation in the normalized difference vegetation index compared with soil moisture in a taiga forest ecosystem in northeastern Siberia

Nogovitcyn, Aleksandr; Shakhmatov, Ruslan; Morozumi, Tomoki; Tei, Shunsuke; Miyamoto, Yumiko; Shin, Nagai; Maximov, Trofim C.; Sugimoto, Atsuko

doi:https://doi.org/10.5194/bg-20-3185-2023

Articles | Volume 20, issue 15

https://doi.org/10.5194/bg-20-3185-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-20-3185-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 15

Research article

|

04 Aug 2023

Research article |

| 04 Aug 2023

Historical variation in the normalized difference vegetation index compared with soil moisture in a taiga forest ecosystem in northeastern Siberia

Aleksandr Nogovitcyn, Ruslan Shakhmatov, Tomoki Morozumi, Shunsuke Tei, Yumiko Miyamoto, Nagai Shin, Trofim C. Maximov, and Atsuko Sugimoto

Supplement

https://doi.org/10.5194/bg-20-3185-2023-supplement

Data sets

Larch needle C/N and carbon and nitrogen isotopes at Spasskaya Pad A. Nogovitcyn, R. Shakhmatov, S. Tei, A. Popova, S. Saito, T. C. Maximov, and A. Sugimoto https://doi.org/10.17592/001.2023021701

Soil moisture at Spasskaya Pad A. Nogovitcyn, R. Shakhmatov, A. Ueta, S. Tei, H. Shimada, G. Iwahana, T. C. Maximov, and A. Sugimoto https://doi.org/10.17592/001.2023021702

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Short summary

The taiga ecosystem in northeastern Siberia changed during the extreme wet event in 2007. Before the wet event, the NDVI in a typical larch forest showed a positive correlation with soil moisture, and after the event it showed a negative correlation. For both periods, NDVI correlated negatively with foliar C/N. These results indicate that high soil moisture availability after the event decreased needle production, which may have resulted from lower N availability.