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Han, Yanyun
- Algorithms of Thinning Simulation for Timber Plantation - a Case Study of Chinese Fir
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Authors
Affiliations
1 College of Information Science and Technology, Beijing Forestry University, Beijing, CN
1 College of Information Science and Technology, Beijing Forestry University, Beijing, CN
Source
Nature Environment and Pollution Technology, Vol 15, No 2 (2016), Pagination: 429-436Abstract
Thinning parameters, such as stand initial density, thinning time, number of thinning, thinning interval, intensity, and cutting age, were analyzed; constraints of these parameters were established. Based on these parameters, two algorithms were proposed. One algorithm was used to calculate volume harvest based on thinning parameters to determine the function of the predicted stand volume harvest via various thinning strategies. The other algorithm was used to develop an enumeration iterative algorithm based on the largest volume yield that can be obtained via an optimal thinning strategy. A decision support system of thinning simulation based on these algorithms was developed. Growth and yield models related to Chinese fir (Cunninghamia lanceolata (Lamb.) Hook.) were selected as research examples. When the initial stand was 4000 stems per hectare, site index was 16 meters and cutting age was 30 years, the Chinese fir stand can yield at most 906.74 m3/ha and 940.74 m3/ha if thinned once and twice with the corresponding and proposed thinning strategies, respectively.Keywords
Timber Plantation, Thinning Simulation, Forest Harvesting, Algorithms, Chinese Fir.References
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Authors
Affiliations
1 School of Information Science and Technology, Beijing Forestry University, Beijing 100083, CN
2 Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, CN
1 School of Information Science and Technology, Beijing Forestry University, Beijing 100083, CN
2 Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, CN