Modeling Caribbean Tree Stem Diameters from Tree Height and Crown Width Measurements
キーワード:
Allometric models、 secondary forest、 Puerto Rico、 U.S. Virgin Islands要旨
Regression models to predict diameter at breast height (DBH) as a function of tree height and maximum crown radius were developed for Caribbean forests based on data collected by the U.S. Forest Service in the Commonwealth of Puerto Rico and Territory of the U.S. Virgin Islands. The model predicting DBH from tree height fit reasonably well (R2 = 0.7110), with strongest in subtropical moist and wet forest. The model predicting DBH from crown radius fit the data poorly (R2 = 0.2876), but improvements were made when the model was fit by forest life zone and crown radius measurement protocol. Models fit with both maximum crown radius and tree height had R-square values that ranged from 0.1803 for the subtropical dry forest to 0.8018 for the subtropical moist forest life zone where crown radius was measured with urban forest inventory protocols. Tree heights had stronger correlations with DBH than did crown radius, perhaps due to difficulties in measuring tree crown width or natural variability in this hurricane-disturbed environment. Models that use tree height have some potential for predicting DBH for use in Caribbean forest biomass and carbon estimation models, but the potential for error propagation by using DBH predicted from crown radius is too great to earn our recommendation for such applications. MCFNS 1(2):78-85.
参考文献
Asner, G.P., M. Palace, M. Keller, R. Pereira, and J.N.M. Silva. 2002. Estimating canopy structure in an Amazon forest from laser range finder and IKONOS satellite observations. Biotropica 34(4), pp. 483-492.
Bechtold, W.A. 2003. Crown-diameter prediction models for 87 species of stand-grown trees in the Eastern United States. Northern Journal of Applied Forestry 24(4):269-278.
Bechtold, W.A. 2004. Largest-crown-width prediction models for 53 species in the western United States. Western Journal of Applied Forestry 9(4):245-251.
Brandeis, T.J., E.H. Helmer, and S.N. Oswalt. 2007. The status of Puerto Rico's forests, 2003. USDA Forest Service Southern Research Station, p. 75.
T.J. Brandeis and S.N. Oswalt. 2007. The Status of U.S. Virgin Islands Forests, 2004. USDA Forest Service Southern Research Station 61 p.
Brown, S. 1997. Estimating biomass and biomass change in tropical forests: A primer. FAO Forestry Paper 134, Food and Agriculture Organization of the United Nations 55 p.
Brown, S., T. Pearson, D. Slaymaker, S. Ambagis, N. Moore, D. Novelo, and W. Sabido. 2005. Creating a virtual tropical forest from three-dimensional aerial imagery to estimate carbon stocks. Ecological Applications 15(3): 1083-1095.
Chave, J., C. Andalo, S.L. Brown, M.A. Cairns, J.Q. Chambers, D. Eamus, H. Fölster, F. Fromard, N. Higuchi, T. Kira, J.P. Lescure, B.W. Nelson, H. Ogawa, H. Puig, B. Riéra, and T. Yamakura. 2005. Tree allometry and improved estimation of carbon stocks and balance in tropical forests. Oecologia 145:87-99.
Cole, T.G. and J.J. Ewel. 2006. Allometric equations for four valuable tropical tree species. Forest Ecology and Management 229:351-360.
Colbert, K.C., D.R. Larsen, and J.R. Lootens. 2002. Height-diameter equations for thirteen Midwestern bottomland hardwood species. Northern Journal of Applied Forestry 19(4):171-176.
Curtis, R.O. 1967. Height-diameter and height-diameter-age equations for second-growth Douglas-fir. Forest Science 13(4):365-375.
Ewel, J.J. and J.L. Whitmore. 1973. The ecological life zones of Puerto Rico and the US Virgin Islands. USDA Forest Service Institute of Tropical Forestry, 72 p.
Falkowski, M.J., A.M.S. Smith, A.T. Hudak, P.E. Gessler, L.A. Vierling, and N.L. Crookston. 2006. Automated estimation of individual conifer tree height and crown diameter via two-dimensional spatial wavelet analysis of lidar data. Canadian Journal of Remote Sensing 32(2):153-161.
Francis, J.K. 1988. The relationship of bole diameters and crown widths of seven bottomland hardwood species. Southern Forest Experiment Station. Research Note SO-328 3 p.
Huang S., and S.J. Titus. 1994. An age-independent individual tree height prediction model for boreal spruce-aspen stands in Alberta. Canadian Journal of Forest Research 24:1295-1301.
Kenefic, L.S., and R.D. Nyland. 1999. Sugar maple height-diameter and age-diameter relationships in an uneven-aged northern hardwood stand. Northern Journal of Applied Forestry 16(1): 43-47.
Larocque, G.R., and P.L. Marshall. 1994. Crown development in red pine stands. I. Absolute and relative growth measures. Canadian Journal of Forest Research, Vol. 24, pp. 762-774.
Martin, F.C., and J.W. Flewelling. 1998. Evaluation of tree height prediction models for stand inventory. Western Journal of Applied Forestry 13(4):109-119.
Nowak, D.J., D.E. Crane, J.C. Stevens, and R.E. Hoehn. 2005. The urban forest effects (UFORE) model: Field data collection manual. USDA Forest Service, Northern Research Station 34 p.
Palace, M., M. Keller, G.P. Asner, S. Hagen, and B. Braswell. 2008. Amazon forest structure from IKONOS satellite data and the automated characterization of forest canopy properties, Biotropica 40(2):141-150.
Perez, J.W. 1970. Relation of crown diameter to stem diameter in forests of Puerto Rico, Dominica, and Thailand. In: A tropical rain forest: A study of irradiation and ecology at El Verde, Puerto Rico, R.F. Pigeon, Editor, Division of Technical Information, U.S. Atomic Energy Commission, pp. 105-122.
Popescu, S.C. 2007. Estimating biomass of individual pine trees using airborne lidar. Biomass and Bioenergy, 31: 646-655.
Popescu, S.C., R.H. Wynne, and R.F. Nelson. 2003. Measuring individual tree crown diameter with lidar and assessing its influence on estimating forest volume and biomass. Canadian Journal of Remote Sensing, Vol. 29(5):564-577.
Smith, W.R., R.M. Farrar Jr., P.A. Murphy, and J.L. Yeiser. 1992. Crown and basal area relationships of open-grown southern pines for modeling competition and growth. Canadian Journal of Forest Research 22:341-347.
Sokal, R.R., and F.J. Rohlf. 1981. Biometry. The principles and practice of statistics in biological research. Second ed, W.H. Freeman and Company 859 p.
USDA Forest Service. 2006. Forest Inventory and Analysis National Field Manual. Volume 1. Field Data Collection Procedures for Phase 2 Plots. Caribbean Version 3.0., http://www.srs.fs.usda.gov/a/data_acquisition/field_guide/Final/SRS_Caribbean_Ver_3_2006.pdf.
Weaver, P.L., and D.J. Pool. 1979. Correlation of crown features to growth rates in natural forests of Puerto Rico. Turrialba 29(1), pp. 53-58.
Zarnoch, S.J., W.A. Bechtold, and K.W. Stolte. 2004. Using crown condition variables as indicators of forest health. Canadian Journal of Forest Research, 34:1057-1070.
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