introduction weed infestation causes an extremely reduction of crops yield. on the other hand, increasing the diversity of crops in agro-ecosystems will change the biomass distribution of weeds community, thereby reducing the number and density of different weed species. weed management in the past few decades has been in conflict with ecological principles and sustainability of the production ...

irrigular land use, land degradation and increasing yield per surface area unit supplicate to be inevitable optimal land utilization.so land evaluation, planning and management to be necessary to achieve a sustainabledevelopment.following this trend, microleis (mediterranean land evaluation information system)has evolved towards an agro-ecological decision support system.the goal of this study ...

in order to determine optimum landuses (in accordance with natural capability) and improve the current land management, landuse planning process was applied by using gis. within the framework of system analysis approach basic ecological and socio-economic , data were mapped. the mapped data were digitized and imported to idrisi and arc/info to build a database ,along with other descriptive data...

Cyanobacteria are major group of microorganism with capability to produce different types of toxin. Indeed, anthropogenic eutrophication of surface water is the main reason for acceleration of their growth and ecological problems. Therefore, the present study tried to isolate toxic cyanobacteria from Kor River, Fars province. For this purpose, 18 water samples were collected from three sampling...

the evaluation of ecological characteristics of wildlife species has fundamental role in species management, because taking a decision for proper method of management is only possible by characterizing of ecological requirements of a species. in this study, suitable habitat of middle spotted woodpecker was investigated in golestan national park. presence and absence of birds and environmental v...

Sustainable ecological tourism is the ultimate goal of ecological tourism. To realize the sustainable development of ecological tourism it is a thorny problem. This paper takes the world geological park in Xinwen for evaluation object, according to the sustainable development of ecological tourism evaluation model, using analytic hierarchy process, expert evaluation method, the multi-objective ...

Maintenance support is the most important measures to keep equipments having high operational capabilities. Equipment maintenance support capability is an important part of operational capability and the evaluation of equipment maintenance support capability is very important to the establishment of battle effectiveness. The evaluation index system of equipment maintenance support capability is...