scholarly journals Tabu Search Experience in Forest Management and Planning

Tabu Search ◽  
10.5772/5592 ◽  
2008 ◽  
Author(s):  
Pete Bettinger
Keyword(s):  
Forest Management ◽  
Tabu Search

Landscape-level optimization using tabu search and stand density-related forest management prescriptions

2007 ◽  
Vol 176 (2) ◽  
pp. 1265-1282 ◽  
Author(s):  
Pete Bettinger ◽  
Kevin Boston ◽  
Young-Hwan Kim ◽  
Jianping Zhu
Keyword(s):  
Forest Management ◽  
Tabu Search ◽  
Stand Density ◽  
Landscape Level

Tabu search design for difficult forest management optimization problems

2003 ◽  
Vol 33 (6) ◽  
pp. 1126-1133 ◽  
Author(s):  
Evelyn W Richards ◽  
Eldon A Gunn
Keyword(s):  
Forest Management ◽  
Tabu Search ◽  
Planning Process ◽  
Short Term Memory ◽  
Optimization Problems ◽  
Heuristic Method ◽  
Management Problem ◽  
Discounted Cost ◽  
Design Elements ◽  
Search Design

A series of tabu search (TS) methods for solving the stand harvesting and road access optimization problem was developed and evaluated. This challenging forest management problem includes spatial constraints for maximum opening size, adjacency delay (green up), as well as timber-flow targets derived exogenously from a strategic planning process. The base harvest decision unit is the stand, and harvest blocks are created dynamically as adjacent stands are scheduled for treatments. The road network subproblem is solved using a fast heuristic method to select a minimum discounted cost set of road construction projects so that scheduled stands are accessible. The TS methods range from simple ones with fixed tabu tenure to an adaptive search with feedback mechanisms to control tabu tenure and to direct the search near constraint boundaries. It was found that while simple TS algorithms can find feasible solutions to the problem, these may be far from optimal. A good short-term memory strategy, constraint boundaries smoothed using penalty functions, and customized diversification moves were important design elements in the most successful TS algorithm for this problem. This paper points out the necessity to design the TS method carefully, since there are many possible TS designs and the design choices matter.

Forest Management In Mongolia – A Review Of Challenges And Lessons Learned With Special Reference To Degradation And Deforestation

2019 ◽  
Vol 12 (3) ◽  
pp. 133-166 ◽  
Author(s):  
Alexander Gradel ◽  
Gerelbaatar Sukhbaatar ◽  
Daniel Karthe ◽  
Hoduck Kang
Keyword(s):  
Forest Management ◽  
Land Management ◽  
Management Practices ◽  
Forest Health ◽  
Hydrological Regime ◽  
Lessons Learned ◽  
Ecosystem Functions ◽  
Special Focus ◽  
Driven System ◽  
The Status

The natural conditions, climate change and socio-economic challenges related to the transformation from a socialistic society towards a market-driven system make the implementation of sustainable land management practices in Mongolia especially complicated. Forests play an important role in land management. In addition to providing resources and ecosystem functions, Mongolian forests protect against land degradation.We conducted a literature review of the status of forest management in Mongolia and lessons learned, with special consideration to halting deforestation and degradation. We grouped our review into seven challenges relevant to developing regionally adapted forest management systems that both safeguard forest health and consider socio-economic needs. In our review, we found that current forest management in Mongolia is not always sustainable, and that some practices lack scientific grounding. An overwhelming number of sources noticed a decrease in forest area and quality during the last decades, although afforestation initiatives are reported to have increased. We found that they have had, with few exceptions, only limited success. During our review, however, we found a number of case studies that presented or proposed promising approaches to (re-)establishing and managing forests. These studies are further supported by a body of literature that examines how forest administration, and local participation can be modified to better support sustainable forestry. Based on our review, we conclude that it is necessary to integrate capacity development and forest research into holistic initiatives. A special focus should be given to the linkages between vegetation cover and the hydrological regime.

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