Obscuration measurements of tree canopy structure using a 3D imaging ladar system

2004 ◽  
Author(s):  
Richard W. Cannata ◽  
William Clifton ◽  
Steven Blask ◽  
Richard M. Marino
Keyword(s):  
3D Imaging ◽  
Canopy Structure ◽  
Tree Canopy

scholarly journals EFEKTIFITAS JALUR HIJAU DALAM MENGURANGI POLUSI UDARA OLEH KENDARAAN BERMOTOR

NALARs ◽  
2017 ◽  
Vol 16 (1) ◽  
pp. 91
Author(s):  
Lukmanul Hakim ◽  
Priambudi Trie Putra ◽  
Azka Lathifa Zahratu
Keyword(s):  
Canopy Structure ◽  
Tree Canopy ◽  
Toxic Substances ◽  
Main Function ◽  
Cross Sectional ◽  
Green Belt ◽  
Healthy Environment ◽  
Lead Dust ◽  
The Many ◽  
Selection Of

ABSTRAK. Ameliorasi iklim adalah salah satu manfaat yang diberikan alam khususnya tumbuhan terhadap lingkungan hidup, dengan cara meningkatkan kualitas lingkungan untuk menjamin tersedianya lingkungan yang sehat. Salah satunya adalah dengan menyediakan oksigen (O2) untuk kebutuhan pernafasan dan meminimalisir gas buang kendaraan bermotor yang beracun seperti gas carbon monooksida (CO) dan debu timbal (Pb). Kedua zat beracun ini sangat berbahaya bagi kesehatan manusia, khususnya yng berada disekitar jalan raya dan sekitar kawasan industri.Green belt adalah salah satu desain penghijauan yang fungsi utamanya adalah untuk mengurangi debu pencemaran ini. Yang diuji dalam penelitian ini adalah efektifitas desain green belt di sisi jalan raya dalam menangkap atau menjerap partikel (debu) polusi yang ditimbulkan oleh kendaraan bermotor. Fakta dalam percobaan yang dilkukan menunjukkan, bahwa bentuk struktur tajuk dan luas penampang daun sangat menentukan efektifitas dari penyerapan debu polusi. Daun yang mempunyai permukaan yang lebih luas dan mempunyai permukaan yang kasar, mempunyai nilai efektifitas yang tinggi. Begitu juga dengan pohon yang bertajuk rapat dan lebat akan sangat efektif dalam menjerap debu polusi atau polutan. Dalam hal ini, untuk desain green belt, diperlukan beberapa pertimbangan untuk efektifitas dalam mengurangi polusi udara. Yaitu pemilihan jenis vegetasi yang mempunyai daun yang lebar dan kasar serta pemilihan jenis struktur tajuk pohon yang disesuaikan dengan lokasi green belt tetapi dipilih yang rimbun dan lebat.Kata kunci: Ameliorasi iklim, vegetasi, penyerapan dan polusiABSTRACT. Climate amelioration is one of the many benefit from that nature, particularly plant that, provides to the environment, by enhancing quality of environment and guaranting the provision of healthy environment. For example is by providing oxygen (O2) for respiration and minimalizing toxic gas such as carbon monoxide (CO) and lead dust (Pb) emitted by vehicle. Both mentioned are toxic substances which highly dangerous for human health, especially for those residing around streets and industrial areas.Green belt is a greening design having main function to reduce pollution dust. This research tested the effectiveness of green belt on side roads in catching or absorbing pollution dust or particles emitted by vehicles. Facts from this research showed that the shape of canopy structure and leaves’ cross sectional area highly determine the effectiveness of pollution dust absorpsion. Leaves with wider surface area and rough texture have high effectiveness. Trees having dense canopy and bushy are very effective in absorpsion of pollution dust. In this case, to design a green belt will required a few considerations that are affecting effectiveness in reducing air polution. Namely, selection of vegetation that has wide and rough leaves and type selection of tree canopy structure that is dense and bushy and suitable to green belt location.Keywords : climate amelioration, vegetation, absorpsion and pollution

scholarly journals Kinetic Energy of Throughfall in Subtropical Forests of SE China – Effects of Tree Canopy Structure, Functional Traits, and Biodiversity

PLoS ONE ◽  
2013 ◽  
Vol 8 (2) ◽  
pp. e49618 ◽  
Author(s):  
Christian Geißler ◽  
Karin Nadrowski ◽  
Peter Kühn ◽  
Martin Baruffol ◽  
Helge Bruelheide ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Functional Traits ◽  
Canopy Structure ◽  
Tree Canopy ◽  
Subtropical Forests ◽  
Se China

scholarly journals Forest Harvesting Impacts on the Structure and Composition of Coniferous Forests in Mexico

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 1068
Author(s):  
Giovanni Estrada Valdés ◽  
Angel Rolando Endara Agramont ◽  
Santiago Vazquez-Lozada ◽  
Fredericksen S. Todd
Keyword(s):  
Forest Cover ◽  
Coniferous Forest ◽  
Canopy Structure ◽  
Forest Harvesting ◽  
Tree Canopy ◽  
Ecological Groups ◽  
Forest Diversity ◽  
Diameter Increment ◽  
Commercial Species ◽  
Pinus Pseudostrobus

The effect of forest harvesting on the composition and structure of a temperate coniferous forest in Mexico was evaluated after three harvesting periods from 2007–2015. In this forest, we identified seven families and eight tree species. The dominant species is Pinus pseudostrobus Lindl. which is also the most important commercial species. Harvesting was oriented towards increasing the abundance of the dominant pine species, resulting in a decrease in forest diversity and favoring a transition to a monospecific forest. The tree canopy structure following harvesting showed a gradual recovery in the number of individuals in each diameter class, but the diameter increment may not necessarily guarantee a sustainable harvest because cutting cycles appear to be too short. The size of harvesting gaps and overall forest cover determine the presence and/or abundance of regeneration (small seedlings, seedlings, saplings, large saplings, and young trees). The establishment of Pinus pseudostrobus and Ilex discolor Hemsl. differed according to their ecological groups.

Strategies in Tree Canopy Structure

Ecology ◽  
1972 ◽  
Vol 53 (5) ◽  
pp. 987-987
Author(s):  
Joan M. Hett
Keyword(s):  
Canopy Structure ◽  
Tree Canopy
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