Simple item page
 

The estimation of light transmittance through grassland canopy: Searching for a suitable indirect indicator

cris.virtual.author-orcid0000-0001-8570-9307
cris.virtual.author-orcid0000-0003-3582-2613
cris.virtual.author-orcid0000-0002-4837-5456
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid84a5f9e6-fa6a-4989-baed-3675125b04bf
cris.virtualsource.author-orcidbc1b3bcd-cf11-4d1f-97d5-428aec40ec24
cris.virtualsource.author-orcida1747932-5be4-4995-8354-e496a431e55b
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.author-orcid57615524-a372-44e4-a940-1ce4e951d7f6
cris.virtualsource.author-orcid#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.abstract.enIn grasslands, the transmittance of photosynthetically active radiation through the canopy (RLIg) is a key factor in terms of ecosystem productivity and biodiversity. However, direct RLIg measurement is time-consuming, and the estimation is difficult because the relationship between RLIg and other canopy characteristics has not been sufficiently explored. We aimed to determine the relationships between RLIg for vegetation with a different cover of forbs, and easily measurable, potential proxy indicators: average canopy height (h), fresh aboveground biomass (FM), and several indices obtained from Sentinel-2 satellites: leaf area index (LAI), normalized difference vegetation index (NDVI), enhanced vegetation index (EVI) and structure insensitive pigment index (SIPI). Empirical data was collected from 2020 to 2023 in 22 mesic grasslands located in Poland. A clear pattern of relationship with RLIg was observed for h, FM, and LAI: the increase in these parameters coincided with the decrease in RLIg. This decrease was strong when h, FM and LAI were still low and became moderate when h, FM, and LAI increased to a certain threshold. This shift in the RLIg trend line was more abrupt and occurred earlier in canopies with high herb cover. This relationship can be accurately modeled using a broken line regression. Photosynthetically active radiation (PAR) is almost unavailable near the ground in swards taller than 15 cm, with LAI greater than 4.5 and aboveground biomass greater than 1.0 kg m−2. Due to the complexity of the models obtained, practical estimation of RLIg based on h, FM, or LAI may be difficult.
dc.affiliationWydział Rolnictwa, Ogrodnictwa i Biotechnologii
dc.affiliation.instituteKatedra Łąkarstwa i Krajobrazu Przyrodniczego
dc.contributor.authorCzerwiński, Marek
dc.contributor.authorGolińska, Barbara
dc.contributor.authorPaszkowski, Artur Michał
dc.contributor.authorWróblewski, Konrad
dc.contributor.authorDąbrowska-Zielińska, Katarzyna
dc.contributor.authorGoliński, Piotr
dc.date.access2025-10-01
dc.date.accessioned2025-10-01T09:56:01Z
dc.date.available2025-10-01T09:56:01Z
dc.date.copyright2025-06-20
dc.date.issued2025
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if1,5
dc.description.numberSeptember 2025
dc.description.points100
dc.description.versionfinal_published
dc.description.volume128
dc.identifier.doi10.1016/j.actao.2025.104102
dc.identifier.eissn1873-6238
dc.identifier.issn1146-609X
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5124
dc.identifier.weblinkhttps://www.sciencedirect.com/science/article/pii/S1146609X25000463
dc.languageen
dc.pbn.affiliationagriculture and horticulture
dc.relation.ispartofActa Oecologica
dc.relation.pagesart. 104102
dc.rightsCC-BY-NC-ND
dc.sciencecloudnosend
dc.share.typeOTHER
dc.subject.enlight interception
dc.subject.ensward
dc.subject.enspecies diversity
dc.subject.envegetation index
dc.subject.enshade avoidance
dc.titleThe estimation of light transmittance through grassland canopy: Searching for a suitable indirect indicator
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.volume128