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Forests 2017, 8(4), 119; doi:10.3390/f8040119

A Basal Area Increment-Based Approach of Site Productivity Evaluation for Multi-Aged and Mixed Forests

Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beijing 100091, China
Center for Statistical Genetics, Pennsylvania State University, Loc T3436, Mail Code CH69, 500 University Drive, Hershey, PA 17033, USA
Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague 6, Suchdol 16521, Czech Republic
College of Forestry, Central South University of Forestry and Technology, 498 ShaoshanNanlu, Changsha 410004, Hunan, China
Department of Forest, Rangeland, and Fire Sciences, University of Idaho, Moscow, ID 83844, USA
Academy of Forest Inventory and Planning of Jilin Province, Changchun 130022, Jilin, China
Author to whom correspondence should be addressed.
Academic Editors: Maarten Nieuwenhuis and Timothy A. Martin
Received: 17 February 2017 / Revised: 29 March 2017 / Accepted: 1 April 2017 / Published: 12 April 2017
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Accurate estimates of forest site productivity are essential for environmental planning and forest management. In this study, we developed a new productivity index, hereafter termed basal area potential productivity index (BAPP), to estimate site productivity for irregular and complex forests characterized by multi-aged, multi-species, and multi-layer stands. We presented the biological relevance of BAPP with its computational details. We also compared BAPP against basal area realized productivity (BARP) in order to verify the practicability and reliability of BAPP. Time-series data of the national forest inventory on 1912 permanent sample plots that were located in two main forest types and consisted of oak-dominated mixed forests and other broadleaf forests in northeast China were used to demonstrate the application of BAPP. The results showed that the value of BAPP for each sample plot was larger than or equal to the corresponding BARP value for each forest type. For appropriately managed stands with relatively better site conditions, the values of both BARP and BAPP were almost identical. The values of the difference between BAPP and BARP could therefore be used to effectively assess forest site productivity. Meanwhile, BAPP also provides much reliable and valuable information that can aid decision-making in forest management. View Full-Text
Keywords: basal area realized productivity; basal area potential productivity; mixed forests; site quality evaluation basal area realized productivity; basal area potential productivity; mixed forests; site quality evaluation

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Fu, L.; Sharma, R.P.; Zhu, G.; Li, H.; Hong, L.; Guo, H.; Duan, G.; Shen, C.; Lei, Y.; Li, Y.; Lei, X.; Tang, S. A Basal Area Increment-Based Approach of Site Productivity Evaluation for Multi-Aged and Mixed Forests. Forests 2017, 8, 119.

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