the study describes and evaluates inter-organizational communication and relationships involving rural development management of community lands within specific perimetros florestais in portugal. the research design is an exploratory research study approach that collected information with a mail questionnaire, interviews and information gleaned from community land association meetings and an in...

this study aimed to identify the factors influencing adoption of integrated pest management (ipm) technologies by paddy farmers in sari county of iran. a sample of 260 farmers who selected randomly, participated in this study through a survey questionnaire. findings of the study revealed a statistically significant positive correlation between adoption of ipm technologies and farmers’ participa...

land use optimization is one of the appropriate methods for soil conservation which helps decision makers and watershed planners in order to make the optimum decision among different land uses. the main objective of this research was to find the optimum area of each land use to reduce soil erosion rate as well as to increase the income of stakeholders in golroudbar watershed located in semnan p...

A P index was developed as a tool to rank agricultural fields on the basis of P loss vulnerability, helping to target remedial P management options within watersheds. We evaluated two approaches, a soil P threshold and components of a P index, by comparing site vulnerability estimates derived from these two approaches with measured runoff P losses in an agricultural watershed in Pennsylvania. R...

The nonpoint source pollution problem can be controlled by implementing various best management practices (BMPs) in the watershed. However, before such practices are adopted, their effectiveness at various spatial and temporal scales must be evaluated. The objective of this research was to evaluate a suite of BMPs in a pasture-dominated watershed in their effectiveness at controlling nutrient l...

This paper examines the emergence of local cooperative institutions--watershed partnerships-that resolve collective action problems involved in the management of natural resources. The political contracting approach to institutional supply suggests that watershed partnerships are more likely to emerge when potential benefits outweigh the transaction costs of developing and maintaining new insti...

The reduction of nutrient over-enrichment (eutrophication) is the most important undertaking in the restoration of the Chesapeake Bay ecosystem. Efforts toward this end are guided and evaluated though extensive use of linked simulation models of the airshed, watershed and estuary. These models track the inputs of nutrients through the watershed and into the bay and predict the consequences to w...

this study is trying to exploitations view point and permanent management problems of rangeland to evaluate in ranches damavand summer rangeland in amol county. statistical society are utilizations 15 ranch that with three methods, collective property, private property and council property from rangeland utilization and randomly from among their number 88 was selected. the research tool was a q...