文献类型：期刊文献

英文题名：Individual height-diameter models for young black spruce (Picea mariana) and jack pine (Pinus banksiana) plantations in New Brunswick, Canada

作者：Lei, Xiangdong[1,2] Peng, Changhui[1,4] Wang, Haiyan[3] Zhou, Xiaolu[1]

第一作者：雷相东;Lei, Xiangdong

通信作者：Peng, CH[1]

机构：[1]Univ Quebec, Dept Sci Biol, Inst Environm Sci, Montreal, PQ H3C 3P8, Canada;[2]Chinese Acad Forestry, Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China;[3]Beijing Forestry Univ, Coll Soil & Water Conservat, Beijing 100083, Peoples R China;[4]Cent S Univ Forestry & Technol, Res Sect Ecol, Changsha 410004, Hunan, Peoples R China

年份：2009

卷号：85

期号：1

起止页码：43-56

外文期刊名：FORESTRY CHRONICLE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000263578000026)】；

基金：This study was partly supported by Furong Scholar Research Program, Canada Research Chair Program, Natural Science and Engineering Research Council of Canada (NSERC), National Natural Science Foundation of China (Grant No. 30371157, 60073007) and China Scholarship Council (CSC). Special thanks to Mr. Edwin Swift, at Atlantic Forestry Centre, Canadian Forest Service, for providing New Brunswick permanent sample plot data used in this study. We thank Dr. Dean W Coble for providing SASATEST program, Mr. Brian Doonan for editing the English and Dr. YC. Lei for his valuable comments on the early manuscript. Our sincere thanks also go to the Dr. Peter Marshall and anonymous reviewers for the comprehensive and detailed review comments that helped improve the manuscript.

语种：英文

外文关键词：composite model; linear model; model calibration; model validation; prediction interval; tolerance interval

摘要：Historically, height-diameter models have mainly been developed for mature trees; consequently, few height-diameter models have been calibrated for young forest stands. In order to develop equations predicting the height of trees with small diameters, 46 individual height-diameter models were fitted and tested in young black spruce (Picea mariana) and jack pine (Pinus banksiana) plantations between the ages of 4 to 8 years, measured from 182 plots in New Brunswick, Canada. The models were divided into 2 groups: a diameter group and a second group applying both diameter and additional stand- or tree-level variables (composite models). There was little difference in predicting tree height among the former models (Group I) while the latter models (Group II) generally provided better prediction. Based on goodness of fit (R-2 and MSE), prediction ability (the bias and its associated prediction and tolerance intervals in absolute and relative terms), and ease of application, 2 Group II models were recommended for predicting individual tree heights within young black spruce and jack pine forest stands. Mean stand height was required for application of these models. The resultant tolerance intervals indicated that most errors (95%) associated with height predictions would be within the following limits (a 95% confidence level): [-0.54 m, 0.54 m] or [-14.7%, 15.9%] for black spruce and [-0.77 m, 0.77 m] or [-17.1%, 18.6%] for jack pine. The recommended models are statistically reliable for growth and yield applications, regeneration assessment and management planning.