A new density model of Cryptomeria fortunei plantation
| العنوان: | A new density model of Cryptomeria fortunei plantation |
|---|---|
| المؤلفون: | Jiang Xi-dian, Huang Langzeng, Chen Baohui, Jiang Chuanyang |
| المصدر: | Frontiers of Forestry in China. 1:154-156 |
| بيانات النشر: | Springer Science and Business Media LLC, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | Ecology, biology, Density model, Cryptomeria, Forestry, biology.organism_classification, Population density, Plant population, Volume (thermodynamics), Statistics, Tree (set theory), Ecology, Evolution, Behavior and Systematics, Reciprocal, Mathematics |
| الوصف: | According to the volume increase model of an average individual tree in a plant population and the theory of invariable final output, we put forward a new density model of plant population: Vβ=ANβ + B. Here N means the stand density and V stands for average individual tree volume; A, B and gb are parameters that change with growth stage. Using the density variation of standard plots of Cryptromeria fortunei plantation to verify the new model, it turns out that this model can well simulate the population density effect law of C. fortunei plantation, and it is markedly better and shows higher accuracy than the commonly used reciprocal model of density effect and secondary-effect model. Let β=1, we can obtain the reciprocal model of density effect, which means the reciprocal model of density effect is only a special case of this new model. |
| تدمد: | 1673-3630 1673-3517 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::cede0c444e53d64c6f0363c63275481eTest https://doi.org/10.1007/s11461-006-0003-yTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........cede0c444e53d64c6f0363c63275481e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16733630 16733517 |
|---|