A General Dynamic Function for the Basal Area of Individual Trees Derived from a Production Theoretically Motivated Autonomous Differential Equation | ||
| Interdisciplinary Journal of Management Studies | ||
| مقاله 7، دوره 10، شماره 4، 2017، صفحه 917-928 اصل مقاله (206.43 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijms.2017.235889.672717 | ||
| نویسنده | ||
| Peter Lohmander* | ||
| Department of Management and Economic Optimization, Optimal Solutions in cooperation with Linnaeus University, Umea, Sweden | ||
| چکیده | ||
| The management of forests may be motivated from production economic and environmental perspectives. The dynamically changing properties of trees affect environmental objectives and values of trees as raw material in the construction sector and in the energy sector. In order to optimize the management of forests, it is necessary to have access to reliable functions that predict how trees develop over time. One central property of a tree is the basal area, the area of the stem segment 1.3 meters above ground. In this paper, a general dynamic function for the basal area of individual trees has been developed from a production theoretically motivated autonomous differential equation. A closed form solution is derived and analyzed. Several examples of recent application of this function in Iran and Sweden are reported. | ||
| کلیدواژهها | ||
| Dynamic function؛ differential equation؛ basal area؛ forest growth | ||
| مراجع | ||
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