Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia
The taiga ecosystem in northeastern Siberia, a nitrogen-limited ecosystem on permafrost with a dry climate, changed during the extreme wet event in 2007. We investigated the normalized difference vegetation index (NDVI) as a satellite-derived proxy for needle production and compared it with ecosyste...
Main Authors: | , , , , , , , |
---|---|
Format: | Text |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | https://doi.org/10.5194/egusphere-2023-279 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-279/ |
id |
ftcopernicus:oai:publications.copernicus.org:egusphere109712 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:egusphere109712 2023-08-27T04:11:32+02:00 Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia Nogovitcyn, Aleksandr Shakhmatov, Ruslan Morozumi, Tomoki Tei, Shunsuke Miyamoto, Yumiko Shin, Nagai Maximov, Trofim C. Sugimoto, Atsuko 2023-08-04 application/pdf https://doi.org/10.5194/egusphere-2023-279 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-279/ eng eng doi:10.5194/egusphere-2023-279 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-279/ eISSN: Text 2023 ftcopernicus https://doi.org/10.5194/egusphere-2023-279 2023-08-07T16:24:18Z The taiga ecosystem in northeastern Siberia, a nitrogen-limited ecosystem on permafrost with a dry climate, changed during the extreme wet event in 2007. We investigated the normalized difference vegetation index (NDVI) as a satellite-derived proxy for needle production and compared it with ecosystem parameters such as soil moisture water equivalent (SWE), larch foliar C / N <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="24pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="f135772273124e8de131c1d3d27c70de"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-3185-2023-ie00001.svg" width="24pt" height="14pt" src="bg-20-3185-2023-ie00001.png"/></svg:svg> ratio, δ 13 C and δ 15 N, and ring width index (RWI) at the Spasskaya Pad Experimental Forest Station in Russia for the period from 1999 to 2019. Historical variations in NDVI showed a large difference between typical larch forest (unaffected) and the sites affected by the extreme wet event in 2007 because of high tree mortality at affected sites under extremely high SWE and waterlogging, resulting in a decrease in NDVI, although there was no difference in the NDVI between typical larch forest and affected sites before the wet event. Before 2007, the NDVI in a typical larch forest showed a positive correlation with SWE and a negative correlation with foliar C / N <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="24pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="a1fd226718b6fd2378e4d645ff1b8807"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-3185-2023-ie00002.svg" width="24pt" height="14pt" src="bg-20-3185-2023-ie00002.png"/></svg:svg> . These results indicate that not only the water availability (high SWE) in the previous summer and current June but also the soil N availability likely increased needle production. NDVI was also positively correlated with RWI, resulting from similar factors controlling them. However, after the wet event, NDVI ... Text permafrost taiga Siberia Copernicus Publications: E-Journals Spasskaya ENVELOPE(41.440,41.440,64.287,64.287) |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The taiga ecosystem in northeastern Siberia, a nitrogen-limited ecosystem on permafrost with a dry climate, changed during the extreme wet event in 2007. We investigated the normalized difference vegetation index (NDVI) as a satellite-derived proxy for needle production and compared it with ecosystem parameters such as soil moisture water equivalent (SWE), larch foliar C / N <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="24pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="f135772273124e8de131c1d3d27c70de"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-3185-2023-ie00001.svg" width="24pt" height="14pt" src="bg-20-3185-2023-ie00001.png"/></svg:svg> ratio, δ 13 C and δ 15 N, and ring width index (RWI) at the Spasskaya Pad Experimental Forest Station in Russia for the period from 1999 to 2019. Historical variations in NDVI showed a large difference between typical larch forest (unaffected) and the sites affected by the extreme wet event in 2007 because of high tree mortality at affected sites under extremely high SWE and waterlogging, resulting in a decrease in NDVI, although there was no difference in the NDVI between typical larch forest and affected sites before the wet event. Before 2007, the NDVI in a typical larch forest showed a positive correlation with SWE and a negative correlation with foliar C / N <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="24pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="a1fd226718b6fd2378e4d645ff1b8807"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="bg-20-3185-2023-ie00002.svg" width="24pt" height="14pt" src="bg-20-3185-2023-ie00002.png"/></svg:svg> . These results indicate that not only the water availability (high SWE) in the previous summer and current June but also the soil N availability likely increased needle production. NDVI was also positively correlated with RWI, resulting from similar factors controlling them. However, after the wet event, NDVI ... |
format |
Text |
author |
Nogovitcyn, Aleksandr Shakhmatov, Ruslan Morozumi, Tomoki Tei, Shunsuke Miyamoto, Yumiko Shin, Nagai Maximov, Trofim C. Sugimoto, Atsuko |
spellingShingle |
Nogovitcyn, Aleksandr Shakhmatov, Ruslan Morozumi, Tomoki Tei, Shunsuke Miyamoto, Yumiko Shin, Nagai Maximov, Trofim C. Sugimoto, Atsuko Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia |
author_facet |
Nogovitcyn, Aleksandr Shakhmatov, Ruslan Morozumi, Tomoki Tei, Shunsuke Miyamoto, Yumiko Shin, Nagai Maximov, Trofim C. Sugimoto, Atsuko |
author_sort |
Nogovitcyn, Aleksandr |
title |
Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia |
title_short |
Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia |
title_full |
Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia |
title_fullStr |
Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia |
title_full_unstemmed |
Historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern Siberia |
title_sort |
historical variation in normalized difference vegetation index compared with soil moisture at a taiga forest ecosystem in northeastern siberia |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-279 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-279/ |
long_lat |
ENVELOPE(41.440,41.440,64.287,64.287) |
geographic |
Spasskaya |
geographic_facet |
Spasskaya |
genre |
permafrost taiga Siberia |
genre_facet |
permafrost taiga Siberia |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2023-279 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-279/ |
op_doi |
https://doi.org/10.5194/egusphere-2023-279 |
_version_ |
1775354423144349696 |