Joint simulation of stand dynamics and landscape evolution using a tree-level model for mixed uneven-aged forests
نویسندگان
چکیده
منابع مشابه
An Area-Based Matrix Model for Uneven-Aged Forests
In this paper a new concept for modeling uneven-aged forests (UEAF) is presented. The term UEAF in this article encloses all forests that deviate from the even-aged structure. The matrix model is area-based, in that the forest under study is described by a distribution of areas over fixed state-spaces spanned by stem number and volume per hectare classes. Dynamics is introduced as transitions o...
متن کاملgrowth models using to simulate and investigate different forest management methods (case study: gorazbon district in kheyroud forest, north of iran)
hyrcanian forests are the most valuable forests in the north of iran and industrial harvesting occurs only in this area. it is a productive region near the southern coast of caspian sea. in these forests mixed beech stands mostly shown uneven-aged structure that is managed under selection system. in order to determine the priority of uneven aged method not only from an ecological view, but also...
متن کاملSimulation of the effect of topography and tree falls on stand dynamics and stand structure of tropical forests
Canopy gaps induced by tree falls have an important ecological role in forest communities since they act on forest sylvigenesis, dynamics and specific composition, mainly through modifications of the light context they involve. Some factors responsible for tree fall occurrences become more influent on sloping areas, particularly crown asymmetry. We have already shown in previous work (Robert, 2...
متن کاملthe innovation of a statistical model to estimate dependable rainfall (dr) and develop it for determination and classification of drought and wet years of iran
آب حاصل از بارش منبع تأمین نیازهای بی شمار جانداران به ویژه انسان است و هرگونه کاهش در کم و کیف آن مستقیماً حیات موجودات زنده را تحت تأثیر منفی قرار می دهد. نوسان سال به سال بارش از ویژگی های اساسی و بسیار مهم بارش های سالانه ایران محسوب می شود که آثار زیان بار آن در تمام عرصه های اقتصادی، اجتماعی و حتی سیاسی- امنیتی به نحوی منعکس می شود. چون میزان آب ناشی از بارش یکی از مولفه های اصلی برنامه ...
15 صفحه اولthe use of appropriate madm model for ranking the vendors of mci equipments using fuzzy approach
abstract nowadays, the science of decision making has been paid to more attention due to the complexity of the problems of suppliers selection. as known, one of the efficient tools in economic and human resources development is the extension of communication networks in developing countries. so, the proper selection of suppliers of tc equipments is of concern very much. in this study, a ...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annals of Forest Science
سال: 2011
ISSN: 1286-4560,1297-966X
DOI: 10.1007/s13595-011-0163-2