Abstract[1] Natural resources as a source of wealth can increase prosperity or impede economic growth.  Empirical studies with different specifications and data are also mixed on whether natural resources are curse or blessing. In fact, the variety of model specifications, measurements, and samples in the empirical literature makes it difficult to generalize the results. In this study, a growth...

One of the basic tenets of the theory of common property resources is that private property rights work to conserve natural resources. There is growing evidence, however, that some large forest owners in Maine are cutting their forests heavily, using poor-quality silviculture techniques. This overexploitation is being done by paper companies, forest contractors, and some private land owners, wh...

Hydrological drought analysis using SDI index in Halilrud basin of Iran Abstract Nowadays, drought is considered as damaging environmental phenomenon which affects natural resources and social communities. Therefore it will be an important issues that magnitude and effects of these phenomena to be considered. To do this we used L-moment method for regional homogeneity testing. The Streamflow Dr...

the aim of this study is to investigate the tree species' diversity in a region with no management planning and introduce the calculated indices as the norm for sustainability assessment. dbh of all tree individuals, and their stories were recorded in the inventory grid (75 m × 100 m) sample plots. subsequently, richness, evenness (simpson, smith & wilson) and heterogeneity (simpson, shann...

Patrick C. Tobin*, Barry B. Bai, Donald A. Eggen and Donna S. Leonard Forest Service, United States Department of Agriculture, Northern Research Station, Morgantown, West Virginia 26505, USA; Oregon Department of Agriculture, Plant Division, Salem, Oregon 97301, USA; Pennsylvania Department of Conservation and Natural Resources, Bureau of Forestry, Division of Forest Pest Management, Middletown...

The moist temperate Himalayas, as one of the major ecological zone of Pakistan, deserve specific attention to the conservation of environment and the sustainable development of natural resources. During the last hundred years, the area has been subjected to major structural changes leading to a decrease of about fifty per cent of the potential forest area. The decrease in forest cover, combined...