Search results
Results from the WOW.Com Content Network
The effect of global climate change on yields of different crops from climate trends ranged from −13.4% (oil palm) to 3.5% (soybean). The study also showed that effects are generally positive in Latin America. Effects in Asia and Northern and Central America are mixed. [128]
Selection cutting in California, May 1972 The results of selective cutting of Ponderosa Pine. Selection cutting, also known as selection system, is the silvicultural practice of harvesting trees in a way that moves a forest stand towards an uneven-aged or all-aged condition, or 'structure'.
Thinning from below – this low thinning can be split into 4 Grades: A Grade is a very light thinning, that removes all overtopped trees Kraft crown class 4 and 5. B Grade is a very light thinning that removes overtopped trees and intermediates which are Kraft Crown class 4,5 and some 3s, C Grade and D Grade are a moderate and heavy thinning respectively removing anything that will not lead ...
Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed vegetation, or "slash", is then left to dry, usually right before the rainiest part of the year.
Clearcutting, clearfelling or clearcut logging is a forestry/logging practice in which most or all trees in an area are uniformly cut down. Along with shelterwood and seed tree harvests , it is used by foresters to create certain types of forest ecosystems and to promote select species [ 1 ] that require an abundance of sunlight or grow in ...
Liberation cutting may be superficially similar to an overstory removal cutting. The major difference between these is that in the overstory removal, regeneration was deliberate and the best trees were saved for the final harvest. In the liberation cutting, the worst trees remain and regeneration was likely an afterthought to a logging operation.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Whereas a group would be only a few mature trees (3-5) and would not necessarily favor a shade intolerant species to establish into a group. In a patch the edge effect would be overcome but in a group most likely not. [2] Patch cuts may be used in a hybrid system with the single tree selection cut method or the group tree selection cut method.