the aim of this study includes investigation into the impact of education based on gardner’s theory of multiple intelligences (mi) on educational achievement of high school students (grade ii) in mathematics from garmsar city. the current study is of applied type in terms of nature since research is seeking for testing of some theoretical concepts in real and live situations. whereas the presen...

Sand dunes form an important and unique system that can be mobile or fixed by vegetation. The common mobility indices of sand dunes, which are related to the wind and the amount of precipitation and potential evaporation, do not work in many dune fields around the world. The reasons for that lie in the singular physical characteristics of the sandy soil. Sand has high hydraulic conductivity cau...

The terrestrial vegetation of Dover and Erith Islands is comprised oflow forest dominated by Allocasuarina verticillataor Myrtaceae species (including Eucalyptus nitida, Melaleuca ericifolia and Leptospermum laevigatum), closed-scrub, heath, Poa poiformis tussock grassland and a wide variety of coastal vegetation types. While Dover Island, which is infrequently burned and ungrazed by stock, is ...

An important factor in sustainable agriculture and economic management is to calculate areas under different crops that the inputs of agriculture connect to this topic. Planning of agricultural mechanization, fertilizer and pesticide requirements, pests and diseases control, estimates of agricultural production, income and tax and financial planning, all linked to the cultivated areas and estim...

East Kangaroo Island is a low, mostly calcarenite-covered granitic island in the Furneaux Group which was observed in 1828 to have been fertile and well-wooded by Allocasuarina verticillata. Over 160 years of grazing and a succession of drought years have contributed to the decline of the native vegetation in biomass, ground cover and native species diversity. In the summer 0[1999/2000, bare gr...

We evaluated the response of the Earth land biomes to drought by correlating a drought index with three global indicators of vegetation activity and growth: vegetation indices from satellite imagery, tree-ring growth series, and Aboveground Net Primary Production (ANPP) records. Arid and humid biomes are both affected by drought, and we suggest that the persistence of the water deficit (i.e., t...

to determine the suitable indices for vegetation cover and production assessment based on the remote sensing data, simultaneous digital data with field data belonging to the spring rangeland of the semirom-isfahan province were analyzed. during two years of monitoring the annual, grass, forb, and shrub vegetation cover and the total production data from 86 were collected. the global positioning...