Study of Relationship Between Gemorphological Biology Mass and Nebkha Sedimentory Volume of Reaumaria Turcestanica in Kheir Abad Desert in Sirjan

Based on the Regression analysis results, the best factors which justifies the Nebkha volume are canopy cover and the plant height together with determinant coefficient 86% (formula 1).the canopy of the plant cover lonely with determinant coefficient 85% (formula 2) and the plant height with determinant factor 67% (formula 3) are placed at the next stage from the view point of justifying Nebkha volume So reaumuria turcestanica with having canopy cover and moderate compaction is capable of producing new shoots to replace those buried by on blowing sand. In this way plant growth copes with the sand accumulation and establish nebkha mound. The witness of this pretension is strong relationship between canopy cover plant heights with nebkha morphometry characteristics.Formula (1): V= 262.983L + 76.347H – 11085.474Formula (2): V= 299.435 – 11141.297Formula (3): V= 488.520H – 5054.452V: Nebkha volume(cm3)L: canopy cover(cm)H: plant height(cm)