Soil-vegetation relationship in el -omayed roselt observatory area (the western mediterranean coastal region of egypt)‎

الملخص EN

The present study aims at monitoring and evaluating the seraphic features in relation to the distribution of plants communities for two years (1999 and 2000) along a permanent transect (about 15 km long) located perpendicular to the seashore in EL- Omayed area.

The current study indicates that the local distribution of plant communities in different micro sites is linked to physiographic variations, climatic zones, and soil characteristics.

Two main groups of habitats are Distinguished : (A) the coastal plain and (B) Plateau, local depressions and transitional zones.

Each of which was classified into many microhabitats.

Each microhabitat indicates the dominant plant species and main soil properties.

High cover ratings were recorded in spring 2000 than in spring 1999 of different microhabitats for both perennial and annual species.

Also, the life form spectrum illustrates big difference in the numbers of these life form between years 1999 and 2000.

As a conclusion, ground cover and species composition changes (1999-2000) were a function of available soil water as reflected by the rainfall distribution pattern over the tow years.

Finally, it may be concluded that the gradual modification in the plant cover proceeds in coincidence with the gradual accumulation of alluvial material and the gradual thickening of the soil.

The relationship between the association in the area under study depending on the retrogressive changes due to erosion and building up of soil.

On the other hand, soil depth and texture may support different and specific plant communities.