Gaps created by falling trees (tree-fall gaps) are a natural disturbance in forest ecosystems. Understanding scale, pattern and the effect of gaps on regeneration is important to current and future forest management. The aim of this study was to determine the size, shape and the spatial pattern of tree-fall gaps and of associated regeneration. This study was carried out in three parcels (No.15,...

The objective of this ecological study was to ascertain the effects of physical environment on life expectancy at birth, using data from all 32 Mexican states. 50 environmental indicators with information about demography, housing, poverty, water, soils, biodiversity, forestry resources, and residues were included in exploratory factor analysis. Four factors were extracted: population vulnerabi...

Lindstad, Berit Hauger. 2002. A comparative study of forestry in Finland, Norway, Sweden, and the United States, with special emphasis on policy measures for nonindustrial private forests in Norway and the United States. Gen. Tech. Rep. PNW-GTR-538. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 35 p. In recognition of the cultural, economic, a...

U.S. Department of Agriculture, Forest Service, Southern Research Station, Center for Integrated Forest Science, Department of Forestry and Environmental Resources, Raleigh, NC 27695, United States U.S. Department of Agriculture, Forest Service, Southern Research Station, Center for Forest Watershed Research, Coweeta Hydrologic Laboratory, Otto, NC 28763, United States U.S. Department of Agricu...

Deputy Director for Conservation Research, S. African Forestry Research Institute, Dept. of Water Affairs, Forestry and Environmental Conservation, Pretoria, Rep. of South Africa. Abstract--This paper summarises patterns of landuse and management in mediterranean-type ecosystems of South Africa and, in greater detail, aspects of current management of fynbos mountain catchments. The managed fire...

ests could provide a larger share of the nation’s timber supply (Stoddard 1942, 1961). Thus, initial programs were designed to help owners of small tracts of forestland be more productive timber managers. The term “sustainable forestry,” described generally as managing forests for their ecological, economic, and social benefits such that these benefits do not diminish in quantity or quality ove...

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, ...

- Forests are important for planetary and human health, but deforestation is increasing. Poor mental health increasingly affecting the world's population. This study aims to investigate association between forestry area, at country level, worldwide. Forestry area in each was sampled 2016 2006; prevalence of disorders or substance abuse 2006 2016; relative disability-adjusted life years (DALYs) ...