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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Spatial patterns of arctic tundra vegetation properties on different soils along the Eurasia Arctic Transect, and insights for a changing Arcticстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Epstein Howard E., Walker Donald A., Frost Gerald V., Raynolds Martha K., Bhatt Uma, Daanen Ronald, Forbes Bruce C., Geml Jozsef, Kaarlejärvi Elina, Khitun Olga, Khomutov Artem, Kuss Patrick, Leibman Marina, Matyshak Georgiy, Moskalenko Natalya, Orekhov Pavel, Romanovsky Vladimir E., Timling Ina
- Журнал: Environmental Research Letters
- Номер: 16
- Год издания: 2021
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Номер статьи: 014008
- DOI: 10.1088/1748-9326/abc9e3
- Аннотация: Vegetation properties of arctic tundra vary dramatically across its full latitudinal extent, yet fewstudies have quantified tundra ecosystem properties across latitudinal gradients with field-basedobservations that can be related to remotely sensed proxies. Here we present data from fieldsampling of six locations along the Eurasia Arctic Transect in northwestern Siberia. We collecteddata on the aboveground vegetation biomass, the normalized difference vegetation index (NDVI),and the leaf area index (LAI) for both sandy and loamy soil types, and analyzed their spatialpatterns. Aboveground biomass, NDVI, and LAI all increased with increasing summer warmthindex (SWI—sum of monthly mean temperatures > 0 ◦C), although functions differed, as didsandy vs. loamy sites. Shrub biomass increased non-linearly with SWI, although shrub typebiomass diverged with soil texture in the southernmost locations, with greater evergreen shrubbiomass on sandy sites, and greater deciduous shrub biomass on loamy sites. Moss biomass peakedin the center of the gradient, whereas lichen biomass generally increased with SWI. Totalaboveground biomass varied by two orders of magnitude, and shrubs increased from 0 g m−2 atthe northernmost sites to >500 g m−2 at the forest-tundra ecotone. Current observations andestimates of increases in total aboveground and shrub biomass with climate warming in the Arcticfall short of what would represent a ‘subzonal shift’ based on our spatial data. Non-vascular (mossand lichen) biomass is a dominant component (>90% of the photosynthetic biomass) of thevegetation across the full extent of arctic tundra, and should continue to be recognized as crucialfor Earth system modeling. This study is one of only a few that present data on tundra vegetationacross the temperature extent of the biome, providing (a) key links to satellite-based vegetationindices, (b) baseline field-data for ecosystem change studies, and (c) context for the ongoingchanges in arctic tundra vegetation.
- Добавил в систему: Лейбман Марина Оскаровна