Much of the remarkable diversity of orchids from Southeast Asia is centered in these evergreen montane forests.In describing the floristic and vegetation patterns of northern Thailand, Montane evergreen forests at these lower elevations have been widely cleared in the past by the swidden agriculture of hill tribes and exist in a successional stage with lower tree diversity and very strong dominance of Fagaceae. In Asia, the pressures are again from burgeoning human populations as well as from ruthless commercial logging, subject to very little control in most countries of the region. The Mixed Evergreen Forest has a lot of dense shade.
It is well known (and documented; see Tropical rainforests are under heavy pressure from human activities. The annual allowable cut is estimated at 0.3 million m 3 per year from the evergreen, 6.69 million m 3 in the semi-evergreen, and 2.18 million m 3 in deciduous forests, respectively ( Table 1.1 ). This co-existing system of plants and animals leads to the existence of a biome. Dominant low trees: Montane low forests on high mountains (Sierra de Maigualida). Even within the MBBR legal boundaries and core zones, habitat is being lost to illegal logging, authorized extraction, domestic harvesting, agricultural clearing, forest fires, storms, and disease and senescence of trees (Illegal logging within the MBBR is a persistent problem. Dominant trees and shrubs: In northern Thailand and Lao, the boundary separating semievergreen and/or deciduous forest communities from montane evergreen communities generally occurs at 800–1000 (rarely 1200) m elevation, but at lower elevations of 600–700 m in northern Viet Nam and Lao. At 1200–1800 m, in tepui uplands/highlands: forest patches in protected areas. This boundary The structure of montane evergreen forests is distinctive with an open to semi-open canopy of relatively low and twisted tree forms. At 1800–2200 m, on high tepui plateaus: low to medium-high, dense, humid forests with dense understory. Epiphytes are typically present and often abundant and diverse in these forests, with the Orchidaceae, a notable example. Dominant low trees: Montane cloud forests on high tepuis (Cuao-Sipapo massif). BUT, you can often move Chaparral to Mixed Evergreen Forest! Low forests (“woodlands”). Some factors that can affect this moisture limitation can be summer heat, rainfall, summer fog, blowing winds, humidity, depth of soil, etc.. For one example, Mixed Evergreen Forest will change to Chaparral under these conditions. At 1500–2200 m, dense, wet, evergreen upper montane cloud forests on slopes near high mountain summit. Types of forests form an important part of Indian geography syllabus for This article will detail the aspirants about the topical evergreen forests also called tropical rainforests.The evergreen forests are essential in not only promoting greenery on the planet, but they are also useful in the continual survival of animals and plants in the forest ecosystem. Shifting cultivation is a major factor in South America, exacerbated there by pressures from ranchers and commercial interests moving into the Amazon. By continuing you agree to the Copyright © 2020 Elsevier B.V. or its licensors or contributors. A ground cover of grasses, rare in pristine montane evergreen forest, is common, as is a cover of bracken fern (The communities of Fagaceae and Lauraceae give way at about 2000 m elevation to a mixed hardwood-conifer forest populated almost entirely by evergreen tree species. This article provides relevant information about the tropical evergreen forests and their characteristic features. Dominant trees: Montane low tepui forests on high-tepui summits (Duida–Marahuaka massif). ScienceDirect ® is a registered trademark of Elsevier B.V.URL: https://www.sciencedirect.com/science/article/pii/B9780124095489121128URL: https://www.sciencedirect.com/science/article/pii/B9780124359550500029URL: https://www.sciencedirect.com/science/article/pii/B9780128130643000028URL: https://www.sciencedirect.com/science/article/pii/B9780128155912000070URL: https://www.sciencedirect.com/science/article/pii/B9780123740267000073URL: https://www.sciencedirect.com/science/article/pii/B9780123706058500177URL: https://www.sciencedirect.com/science/article/pii/B9780124095489095877URL: https://www.sciencedirect.com/science/article/pii/B9780124095489095014URL: https://www.sciencedirect.com/science/article/pii/B978012804090400001XURL: https://www.sciencedirect.com/science/article/pii/B9780124095489117865Evergreen Oak Woodlands—Southern Europe and Northern AfricaReference Module in Earth Systems and Environmental SciencesApplications of Physiological Ecology to Forest ManagementChandrakasan Sivaperuman, ... Tadimalla Venkata Ramalingaswara Subrahmanya Sharma, in Biodiversity and Climate Change Adaptation in Tropical IslandsAdvances in Eddy-Flux Analyses, Remote Sensing, and Evidence of Climate ChangeThinning Combined With Biomass Energy Production Impacts Fire-Adapted Forests in Western United States and May Increase Greenhouse Gas EmissionsReference Module in Earth Systems and Environmental SciencesDifferent forest types have different fuel relationships.