herb layer

herb layer

n
(Biology) See layer2
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Results showed a total density of 2,925 ind/ha for the tree layer, 775 ind/ha for the shrub layer and 400 ind/ha for the herb layer. The Fabaceae, Euphorbiaceae and Ulmaceae families were the most important for the tree layers, with a 72.15% IVI; while Cactaceae, Euphorbiaceae and Amaranthaceae were the most important for the shrub layer, with a 65.36% IVI.
The recovery of herb layer in landslides and source populations in undisturbed areas played important roles in promoting the recovery of non-volant small mammal communities in landslides.
Significant differences (P < 0.05; Figure 3(b)) in species richness and diversity in the herb layer of the understory plant community were detected between the two forest types.
tanguticum is alpine meadows with only an herb layer. The vegetation coverage of such alpine meadows is more than 95% and includes a small amount of cultivated barley.
Site and habitat Stream bank Dry Ridge Moist Tree layer Stream bank 100.00 80.00 71.79 65.00 Dry -- 100.00 85.71 72.22 Ridge -- -- 100.00 74.29 Moist -- -- -- 100.00 Shrub layer Stream bank 100.00 75.00 63.41 68.07 Dry -- 100.00 56.41 57.78 Ridge -- -- 100.00 68.42 Moist -- -- -- 100.00 Herb layer Stream bank 100 63.37 68.04 60.19 Dry -- 100.00 66.67 54.17 Ridge -- -- 100.00 52.17 Moist -- -- -- 100.00 Climber layer Stream bank 100.00 76.92 72.73 61.54 Dry -- 100.00 50.00 71.43 Ridge -- -- 100.00 50.00 Moist -- -- -- 100.00
Plot size of 10x10m was used for tree layer, 4x4m for woody undergrowth up to 3m in height and 1x1m for herb layer (Schemnitz, 1980).
"In an oak woodland, for example, there are different levels: an upper canopy, often a middle canopy of medium-sized trees and saplings; a shrub layer, a herb layer, and then bulbs and corms at the bottom.
We divided juveniles into three categories: true seedlings, i.e., trees that germinated in 2008; herb layer juveniles, i.e., trees [greater than or equal to] 25 cm in height; and shrub layer juveniles, i.e., trees 25 cm to 1.4 m.
Pteridophytes have been found to be dominant in the herb layer of both neotropical and paleotropical forests (Poulsen & Nielsen 1995, Poulsen & Pendry 1995).
In Cienaga del Medio there occurs a shrubland of Larrea nitida with low cover, and the herb layer is lower than 10 cm in height (Marquez et al., 2000; Marquez and Dalmasso, 2003; Taraborelli, 2006).
During the process, it is important to regulate the parameters such as temperature and relative humidity of the air blown into the medicinal herb layer in order to minimize energy expenditure for ensuring the necessary moisture of dry medicinal herbs and to restrict the evaporation of essential oils.