气候变化领域集成服务门户(CCPortal): Evaluation of the FVS-CR diameter growth model in structurally-heterogeneous ponderosa pine (Pinus ponderosa Douglas ex C. Lawson)stands in the Southern Rockies, and potential modifications

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DOI	10.1016/j.foreco.2019.05.031
	Evaluation of the FVS-CR diameter growth model in structurally-heterogeneous ponderosa pine (Pinus ponderosa Douglas ex C. Lawson)stands in the Southern Rockies, and potential modifications
	Dickinson Y.L.; Battaglia M.A.; Asherin L.A.
发表日期	2019
ISSN	0378-1127
起始页码	1
结束页码	10
卷号	448
英文摘要	Forest managers are increasingly focused on promoting or maintaining forest structural complexity, including the heterogeneity of forest structures within stands. However, many of the forest growth models commonly used by forest managers assume that stands are structurally homogeneous. Therefore, using these forest models to project the development of structurally complex stands may provide inaccurate results. We investigated the accuracy and precision of individual tree growth estimates from an individual tree growth model commonly used by forest managers (Central Rockies Variant of the Forest Vegetation Simulator, FVS-CR)in six structurally heterogeneous ponderosa pine (Pinus ponderosa Douglas ex C. Lawson)stands. Furthermore, we examined whether the addition of non-spatial, semi-distance independent, or spatially explicit indices of local competition to the model improved the accuracy and precision of stand development projections over the 16-year study. We found that while the stand-scale estimates of growth were within the bounds of normal measurement precision, the estimates of individual tree diameter growth had a root mean square error (RMSE)that equated to 44% of the mean individual tree diameter growth. The addition of crown ratio to the model improved estimates more than the other investigated indices by halving the estimated bias and reducing the RMSE of the projected individual tree diameter growth by 4.8%. © 2019 Elsevier B.V.
英文关键词	Crown ratio; GENGYM (GENeralized Growth and Yield Model); Local competition
语种	英语
scopus关键词	Managers; Mean square error; Accuracy and precision; Crown ratio; Forest vegetation simulator; Growth and yield models; Individual tree growth models; Measurement precision; Root mean square errors; Structural complexity; Forestry; canopy; competition (ecology); coniferous tree; diameter; growth modeling; heterogeneity; individual-based model; model; stand structure; Development; Diameter; Estimates; Forestry; Growth; Pinus Ponderosa; Precision; Trees; Rocky Mountains; Pinus ponderosa
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155904
作者单位	School of Forest Resources and Environmental Science, Michigan Technological University, United States; Rocky Mountain Research Station, US Forest Service, United States
推荐引用方式 GB/T 7714	Dickinson Y.L.,Battaglia M.A.,Asherin L.A.. Evaluation of the FVS-CR diameter growth model in structurally-heterogeneous ponderosa pine (Pinus ponderosa Douglas ex C. Lawson)stands in the Southern Rockies, and potential modifications[J],2019,448.
APA	Dickinson Y.L.,Battaglia M.A.,&Asherin L.A..(2019).Evaluation of the FVS-CR diameter growth model in structurally-heterogeneous ponderosa pine (Pinus ponderosa Douglas ex C. Lawson)stands in the Southern Rockies, and potential modifications.Forest Ecology and Management,448.
MLA	Dickinson Y.L.,et al."Evaluation of the FVS-CR diameter growth model in structurally-heterogeneous ponderosa pine (Pinus ponderosa Douglas ex C. Lawson)stands in the Southern Rockies, and potential modifications".Forest Ecology and Management 448(2019).