جوانب من النظام الحضري في محافظة ذي قار لسنة 2015

The research, in its  revealing the variances occurring in the population sizes among the urban centers, clarified the extent of the difference in their distributions which indicated the pattern taken by this distribution and its justice balance. The research relied on some statistical techniques and styles represented by the rank-size rule, Zipf rule, the quadruple index, the analysis of Closer neighbor, Lorenz curve, and the Jenny coefficient, in order to arrive at quantitative results illustrating the accuracy of the development patterns and levels and the variance of cities size. The urban centers in the Thi Qar governorate were variant in their development levels of each center, where seven urban centers emerged in them spatial development somewhat, for they were near to the ideal line except the center of Nasiriyah district which had a high development level. As to the rest of centers, they were below the development level and were thirteen urban center, while the centers of Tar, Akika and Hammar were at the bottom of development levels. Therefore, the interest in them should be increased.
The research concluded that the value of the closer neighbor was (0.84). indicating a quantitative fact that the distribution pattern of the urban centers was convergent tending to randomness. The current research of Thi Qar governorate was preceded by researches three decades ago, resulting in the prominence of findings different from previous indicators related to the development.