Phytosocioiogicai Attributes of Wlldi Gaza Arca, Gaza Strip, Palestinc

Wadi Gala area, Gaza Strip. Palestine was subjected to a phytosociological study through 24 trips in the period from March to September 2007. This area has a characteristic semi-arid climate and locates in a transitional zone between Mediterranean. Negev and Sinai regions. Nine quadrats (10x10 m) at buttom. Bank and open field wadi in six locations: namely, Al-Brikat. AI -Nabaheen. AI -Saoud. AI -Bahr. AI ,Rabowa and Abu-Malaa representing the entire area of Wadi Gaza, Gaza Strip were chosen to study the vegetation. Including species cover-abundance. species frequcncy, relative frequency. community similarity. in addition to soil analysis. Some quadrats were pure stand of one species; e.g .. Tamarix nilotica in Al-Rabowa and Arundo donax in Abu-Malaa. Some species like Cynodon doctylon were restrided only to one place (wadi bank) of the location (Al -Bri kat) due to the lower degree of animal grazing and the moisture availability. Alhagi graecorum and Silybum marianum recorded the highest spetcies frequency in the studied area. Unique occurrence of some salinity tolerant species were observed in AI -Bahr (a coastal localion). The highest similarity was found between Al-Brikat wadi bank and Al -Nabaheen wadi open field. In contrast to the dissimilarity between both of Abu-Malaa and AI -Rabowa wadi buttom and other locations as they were pure stands and more or less unique locations. Physical and chemical structure of soil varied according to soil texture, pH values. salinity. moisture. sewage water. urbon effect and bordering agricultural fields.