This paper deals with sustainability in forestry management. We study a dynamic control system within the mathematical framework of viability analysis. In particular, we use the concept of viability kernel to reveal sustainable harvesting policies and sustainable resource states. An example illustrates the general statements.

Although using logging residues for bioenergy is not a new issue for countries such as Sweden, Finland, Austria, Germany, etc. that are developed in terms of forestry, it is a new issue that requires studying for countries such as Turkey. This study investigates the views of forest engineers working in forest enterprises, researchers working in forestry research institutes and academicians work...

Mississippi forest landowners were surveyed to determine average discount rates or “hurdle rates”—the lowest rates of return they consider acceptable—for 3 nonforestry investments, and for 5, 15, and 25 yr forestry investments. The survey included 829 individuals who owned at least 20 ac of uncultivated land and had harvested timber during a recent 5 yr period; survey results are therefore orie...

the major purpose of this study is to assess the perception of managers in the forest, range and watershedorganization. it is an applied study by using descriptive–correlative method. a questionnaire was developedand data collected from 105 respondents. the validity and reliability of questionnaires was verified. theresults of study show that there was a relationship between educational level, ...

C Forest Management (CFM) is the youngest forestry program implemented so far, in Nepal. CFM modality in Nepal has been designed focusing on sustainable management of Terai forest. Several policies and strategies formulated and implemented in the past to manage Terai forest resulted unsuccessful. Operation Forest Management Plan (OFMP) and Community Forestry (CF) are the latest example of such ...

Organized by three distinguished members of the JBS Editorial Board – Marc Bickle, PhD, of the Max Planck Institute of Molecular Cell Biology and Genetics (Germany); Hakim Djaballah, PhD, of Institut Pasteur Korea (South Korea); and Lorenz Martin Mayr, PhD, of AstraZeneca (UK) – this special issue demonstrates how RNAi is enjoying a revival of popularity and is increasingly being applied to dis...

Project Name SWAZILAND-Swaziland Biodiversity Conservation and Participatory Development Region Africa Regional Office Sector General agriculture, fishing and forestry sector (100%) Theme Biodiversity (P); Other environment and natural resources management (P); Environmental policies and institutions (S) Project P068975 Borrower(s) KINGDOM OF SWAZILAND Implementing Agency(ies) MIN OF TOURISM, E...

Pacific Economic Bulletin Volume 10 Number 2 1995 © Asia Pacific Press Academics and international development agencies express growing concern about the lack of economic growth in the Pacific islands and the economic policies employed by these countries. Even where there has been growth, it has usually been dependent on a few industries such as minerals, tourism, tuna and forestry. This growth...

Based on the survey data of 364 peasant households in Yibin, Sichuan, this paper analyzes the farmer’s willingness to small forest tenure mortgage loans. The result indicates a high willingness up to 74.2%, i.e. the farmers are willing to invest forest tenure mortgage loans into forestry and agricultural production. The influential factors on farmer’s willingness to small forest tenure mortgage...