a thickness of some homogeneous substance, such as a stratum or a coating on a surface
2.
one of four or more levels of vegetation defined in ecological studies: the ground or moss layer, the field or herb layer, the shrub layer, and one or more tree layers
3.
a laying hen
4. horticulture
a.
a shoot or branch rooted during layering
b.
a plant produced as a result of layering
verb
5.
to form or make a layer of (something)
6.
to take root or cause to take root by layering
Word origin
C14 leyer, legger, from lay1 + -er1
Examples of 'tree layer' in a sentence
tree layer
The former upper tree layer influenced advanced regeneration through microsite and light limitation.
Radek Bače, Miroslav Svoboda, Pavel Janda, Robert C Morrissey, Jan Wild, JenniferL Clear, Vojtěch Čada, Daniel C Donato 2015, 'Legacy of Pre-Disturbance Spatial Pattern Determines Early Structural Diversity followingSevere Disturbance in Montane Spruce Forests.', PLoS ONEhttp://europepmc.org/articles/PMC4589365?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
C stocks of tree layer, shrub layer, herb layer, coarse wood debris, forest floor and soil were estimated.
Ning Liu, Hongwei Nan 2018, 'Carbon stocks of three secondary coniferous forests along an altitudinal gradienton Loess Plateau in inland China', PLOS ONE10.1371/journal.pone.0196927. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
A multimodeling approach was used to integrate vegetation dynamics in both the herbaceous and shrub/tree layer.
Silvana Hudjetz, Gottfried Lennartz, Klara Krämer, Martina Roß-Nickoll, André Gergs,Thomas G Preuss 2014, 'Modeling Wood Encroachment in Abandoned Grasslands in the Eifel National Park - ModelDescription and Testing.', PLoS ONEhttp://europepmc.org/articles/PMC4262262?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The species diversity did not differ significantly among the tree layer, sapling layer and herb/seedling layer.
Lü Xiao-Tao, Yin Jiang-Xia, Tang Jian-Wei 2011, 'Diversity and composition of understory vegetation in the tropical seasonal rain forestof Xishuangbanna, SW China', Revista de Biología Tropicalhttp://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442011000100039. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Grass and subshrub layer significantly affects the formation of tree layer (the early stages of forest demutation).
I. M. Kovalenko 2016, 'Features of grass and subshrub reproduction in forest phytocoenoses', Біологічні студіїhttp://publications.lnu.edu.ua/journals/index.php/biology/article/view/78. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)