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首页> 外文期刊>Northern Journal of Applied Forestry >A Stocking Diagram for Midwestern Eastern Cottonwood-Silver Maple-American Sycamore Bottomland Forests
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A Stocking Diagram for Midwestern Eastern Cottonwood-Silver Maple-American Sycamore Bottomland Forests

机译：中西部东部杨木-银枫-美国梧桐底特兰森林种群图

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摘要

A stocking diagram for Midwestern bottomland eastern cottonwood (Populus deltoides Bartram ex Marsh.)-silver maple (Acer saccharinum L.)-American sycamore (Platanus occidentalis L) forests was developed following the methods of S.F. Gingrich (1967. Measuring and evaluating stocking and stand density in upland hardwood forests in the Central States. For. Sci. 13:38-53). The stocking diagram was derived from forest inventory data from two different studies of bottomland forests that covered a wide range of soil and hydrologic site characteristics found throughout the central Midwest, including Missouri, Iowa, Illinois, and southern Wisconsin. The minimum of full stocking (B-level) was determined from measurements on open-grown trees. The maximum of full stocking (A-level) in our study was almost one-third higher in stand basal area than A-level stocking, as determined by J.C.G. Goelz (1995. A stocking guide for southern bottomland hardwoods. South. J. Appl. For. 19:103-104) for southern hardwood bottomlands dominated by cherrybark oak (Quercus pagoda Raf.), Nuttall oak (Quercus nuttallii Palmer), and sweetgum (Liquidambar styraciflua L.,), or by C.C. Myers and R.G. Buchman (1984. Manager's handbook for elm-ash-cottonwood in the north central states. GTR-98. US Forest Service, North Central For. Exp. Stn., St. Paul, MN. 11 p) for elm (Ulmus spp.), ash (Fraxinus spp.), and eastern cottonwood forests in the north central states. However, A-level stocking in this study was only slightly higher than guides developed for northern red oak (Quercus rubra L) in Wisconsin (McGill, D.W., R. Rogers, A.J. Martin, and P.S. Johnson. 1999. Measuring stocking in northern red oak stands in Wisconsin. North. J. Appl. For. 16:144-150). Differences in stocking among these forest types are due to variation in species composition, species silvical characteristics, and possibly the data sources used to construct the stocking diagrams. This stocking diagram can be used by forest managers to make decisions related to stand stocking for management of eastern cottonwood, silver maple, and American sycamore bottomland forests in the Midwest.
机译：遵循S.F.的方法，开发了中西部底层平原东部杨木（Populus deltoides Bartram ex Marsh。）-银枫（Acer saccharinum L.）-美国梧桐（Platanus occidentalis L）森林的放养图。 Gingrich（1967.在中部地区测量和评估中部高地硬木森林的种群和林分密度。对于科学13：38-53）。种群图来自两个不同的底地森林研究的森林资源调查数据，该研究覆盖了整个中西部中部（包括密苏里州，爱荷华州，伊利诺伊州和威斯康星州南部）发现的广泛的土壤和水文站点特征。完全放养的最低要求（B级）是通过对裸树生长的测量确定的。根据J.C.G.的研究，在我们的研究中，标准基础区的满载最大量（A级）比A级存量高了近三分之一。 Goelz（1995.南部硬木底地的放养指南。South。J. Appl。For。19：103-104）南部硬木底地的主要成分为樱桃树皮橡木（Quercus pagoda Raf。），Nuttall橡木（Quercus nuttallii Palmer）和sweetgum（Liquidambar styraciflua L.），或按CC迈尔斯和R.G.布赫曼（Buchman，1984年，中北部北部榆木-棉签经理手册，GTR-98号，美国中部北部森林服务局，明尼苏达州圣保罗的实验站，第11页），榆木（Ulmus spp。 ），白蜡木（Fraxinus spp。）和中北部北部的东部杨木森林。但是，本研究中的A级存货仅略高于为威斯康星州北部赤栎（栎木）开发的指南（McGill，DW，R。Rogers，AJ Martin和PS Johnson。1999）。橡树立于威斯康星州北部（J. Appl。For。16：144-150）。这些森林类型之间的放养差异是由于物种组成，物种银度特征的变化以及可能用于构建种群图的数据源所致。森林管理者可以使用此种群图来制定与中西部东部三角叶杨，银枫和美国梧桐底栖林的林分种群有关的决策。

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