A System to Derive Optimal Tree Diameter Increment Models from the Eastwide Forest Inventory Data Base (EFIDB)
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منابع مشابه
A System to Derive Optimal Tree Diameter Increment Models from the Eastwide Forest Inventory Data Base (EFIDB)
This ar t ic le i s an in troduct ion to the computevsoffwave used by the Potential Relative Increment (PRI) approach to opt imal tree diameter growth modeling. These DOSpvograms extract quali f ied tree andplot data,from the Eastwide Forest Inventory Data Base (EFIDB), calculate relat ive tree increment , sort for the highest relat ive iucrements by diameter class, and generate an ASCIIjile fo...
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Potential relative increment (PRI) is a new method to derive optimal diameter growth equations using inventory information from a large public database. Optimal growth equations for 24 species were developed using plot and tree records from several states (Michigan, Minnesota, and Wisconsin) of the north central US. Most species were represented by thousands of individuals measured across an ex...
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—Most optimal tree diameter growth models have arisen through either the conceptualization of physiological processes or the adaptation of empirical increment models. However, surprisingly little effort has been invested in the melding of these approaches even though it is possible to develop theoretically sound, computationally efficient optimal tree growth models using inventory data. The Pot...
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Optimal diameter growth equations for 60 major tree species werefit using the potential relat ive increment (PRI) methodology. Almost 175,000 individualsfrom the Midsouth (Arkansas , Louis iana, Missouri, Oklahoma, and Texas) were selectedfrom the USDA Forest Service’s Eastwide Forest Inventory Database (EFIDB). These records were then reduced to the individualsgrowing at thefastest rategiven t...
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هدف اصلی از این تحقیق به دست آوردن و مقایسه حق بیمه باورمندی در مدل های شمارشی گزارش نشده برای داده های طولی می باشد. در این تحقیق حق بیمه های پبش گویی بر اساس توابع ضرر مربع خطا و نمایی محاسبه شده و با هم مقایسه می شود. تمایل به گرفتن پاداش و جایزه یکی از دلایل مهم برای گزارش ندادن تصادفات می باشد و افراد برای استفاده از تخفیف اغلب از گزارش تصادفات با هزینه پائین خودداری می کنند، در این تحقیق ...
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ژورنال
عنوان ژورنال: Southern Journal of Applied Forestry
سال: 2002
ISSN: 0148-4419,1938-3754
DOI: 10.1093/sjaf/26.4.214