Changes in composition, structure and aboveground biomass over seventy-six years (1930-2006) in the black rock forest, Hudson highlands, southeastern New York state

被引:57
作者
Schuster, W. S. F. [1 ]
Griffin, K. L. [2 ]
Roth, H. [3 ]
Turnbull, M. H. [4 ]
Whitehead, D. [5 ]
Tissue, D. T. [6 ]
机构
[1] Black Rock Forest Consortium, Cornwall, NY 12518 USA
[2] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA
[3] Columbia Univ Barnard Coll, Dept Environm Sci, New York, NY 10027 USA
[4] Univ Canterbury, Sch Biol Sci, Christchurch 1, New Zealand
[5] Landcare Res, Lincoln 7640, New Zealand
[6] Texas Tech Univ, Dept Biol, Lubbock, TX 79409 USA
关键词
basal area; canopy; carbon; density; environmental change; forest inventory; long-term; mortality; oak; Quercus; red maple;
D O I
10.1093/treephys/28.4.537
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
We sought to quantity changes in tree species composition, forest structure and aboveground forest biomass (AGB) over 76 years (1930-2006) in the deciduous Black Rock Forest in southeastern New York, USA. We used data front periodic forest inventories, published floras and a set of eight long-term plots, along with species-specific allometric equations to estimate AGB and carbon content. Between the early 1930s and 2000, three species were extirpated from the forest (American elm (Ulmus americana L.), paper birch (Betula papyrifera Marsh.) and black spruce (Picea mariana (nigra) (Mill.) BSP)) and seven species invaded the forest (non-natives tree-of-heaven (Ailanthus altissima (Mill.) Swingle) and white poplar (Populus alba L.) and native, generally southerly distributed, southern catalpa (Catalpa bignonioides Walt.), cockspur hawthorn (Crataegus crits-galli L.), red mulberry (Mortis rubra L.), eastern cottonwood (Populus deltoides Bartr.) and slippery elm (Ulmus rubra Muhl.)). The forest canopy was dominated by red oak and chestnut oak, but the understory tree community changed substantially from mixed oak-maple to red maple-black birch. Density decreased from an average of 1500 to 735 trees ha(-1), whereas basal area doubled from less than 15 m(2) ha(-1) to almost 30 m(2) hat by 2000. Forest-wide mean AGB from inventory data increased from about 71 Mg ha(-1) in 1930 to about 145 Mg ha(-1) in 1985, and mean AGB on the long-term plots increased from 75 Mg ha(-1) in 1936 to 218 Mg ha(-1) in 1998. Over 76 years, red oak (Quercus rubra L.) canopy trees stored carbon at about twice the rate of similar-sized canopy trees of other species. However, there has been a significant loss of live tree biomass as a result of canopy tree mortality since 1999. Important constraints on long-term biomass increment have included insect outbreaks and droughts.
引用
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页码:537 / 549
页数:13
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