Environmental reverse engineering is a new approach that can be used to obtain a visual representation of the ancient environment. This method can convey the message to researchers about the conditions under which it is possible to revive past environments. Dynamic systems that rely on current environmental data can be classified based on variable classification and Chaos Theory in Vensim software. This allows for the dynamic algorithm of the relationships between variables and their dependencies to be modeled using "Dynamic Systems" modeling, without facing the limitations of static systems. In this study, using Dem10m data, analysis of written documents, and field data, an initiative was taken to reconstruct the past environment of Jazmourian Lake. The results of the study show that: i) the water level of Jazmourian Lake has a significant role in controlling environmental factors. ii) If the lake restoration scenario is implemented according to the 390-meter terrace as the most effective policy for controlling dust, it can reduce the annual average DSI (Dust Storm Index) by 1. iii) By restoring the lake, the negative effects of dust will be neutralized to a significant extent through increased relative humidity, increased vegetation cover percentage, and surface soil moisture.

The research project of "Identification of Kerman Province Fishes" was carried out from 1996 to 1997. In this study, the fishes of the main rivers of this province, namely: Baft, Soltani, Halil-rood, Delta-rood, Seyyed-Morteza, Rabor, Roodbar and Halil-kouchak were identified. During one year sampling from above mentioned rivers, a total of771 samples were collected which they belong to 2 orders, 3 families and 7 species. The identification fishes were: Capoeta damascina, Cyprinion watsoni, Garra persica, Carassius auratus, Cyprinus carpio from CYPRINIDAE family. Nemacheilus sargadens;s from COBITlDAE family and Channa gachua from CHANNIDAE family.

Determination of the suitable irrigation period for establishment of Calligonum comosom was objective of the study. The experiment was conducted in the vixinity of 50 km of west Iranshahr. Annual precipitation of the study area which is located on 580 m altitude was 100mm during three years of the study. The split split plot design with four replications was used for this experiment, in which the main plots were two date for plantination, November and February, sub plots were plantation methods, seed and cutting, and sub sub plots were irrigation periods with four levels, 15, 20, 25 and 30 days intervals.'Number of established stands was used as the main critrion for determination of the success of the treatments. For that the number of seedling mortality was counted for each and all treatments on a monthly basis within the year.Results showed that the differences between planting dates and planting methods are significant. For irrigation period levels however no significant difference could be found. Seeding was more successful than cutting.

Development of normal faults is caused by extension regimes that have spread in many parts of crust specially in continental rifting and oceanic ridges. Furthermore, normal faults may develop in an pecial condition in some areas under the compression regimes (mainly folds, thrusts and reverse faults are produced in this situation). Compression process may cause.folding and uplifting. Uplifting can produce surface tension forces and then the normal faults could form. Normal faults are formed clearly due to accumulation hige sedimentary materials in the northern and south parts of Makran region (south margin of Jazmourian and Makran coastral area). The procedure under wich the normal faults in the coastal area form differs to those in the south margin of Jazmourian. The absolute movement uplifting of the footwall in the reverse faults in the margin of Jazmourian causes their appearance as relatively normal faults.Whereas, the development normal faults in the Makran coast is affected by surface tension forces, induced by the uplift and absolute movement of hanging wall of reverse faults. So that uplifted parts under the effect of gravitional unstability produces normal faults. Also the accumulation of faults dip toward south and vertical extension fractures (hoo) are in agreement with this subject.

Determination of suitable irrigation period and water volume for haloxylon persicum establishment was the aim of the study. The experiment was conducted in 50 km of west Iranshahr, Iran, characterized by 100 mm annual precipitation and 580 m altitude. The study was run for three years. Seed were planted 1995 and conserved from animal damages. The split split plot design with three replications was used for the experiment, in which Irrigation period with three level of 25, 30 and 35 days was the main plots and water volume with three level of 15, 20 and 25 litters was the sub plots. Irrigation continued for the first year. Plant establishment was a major factor; therefore the seedling mortality was counted on treatments monthly each year. There were no significant differences between treatments in the first year however the shortest irrigation period with largest water volume had the little seedling mortality. During the second year after May, the mortality increased and by the end of this year all seedlings died. It appeared that essential variations in soil surface layer that causes by soil wind erosion, has prevented seedlings establishment.

Autecology of three species, Calligonum comosum, Calligonum bungei and Calligonum polygonoides was studied in Sistan and Baluchestan province, Iran. Possible use of the species in ranged improvement programs was the incentive of the study. Shifting sand dune threat is the main problem of the province farms, cities, and rural areas are all invaded by the sand dune. The results of such research could help on selection of proper species for biological sand stabilization programs. This study was conducted on three sites naimely Tahlab, Chahan and east of Jazmoorian. The main problem on desert areas in Sistan and Baluchestan is the damage of sand dune transition on agricultural areas, roads, cities and rural areas. Climate, edaphic, phenological stages, density, vegetation type and presence of other accompanied species were studied on Calligonum species habitsat in above regions. Precipitation and temperature regime for climate condition, soil texture, pH and Ec were studied as well. The results show that all three species were available on Tahlab, Chahan and east of Jazmoorian.The results also showed that Ca. polygonoides tolerate high range of pH, (7.4 to 9.4), the same result was deduced in Calligonum comosum and east of Jazmoorian region.

A wide range of estimated soil erosion in Iran is reported in different references. In addition, there is no acceptable priority of erosion rate and sediment yield among the main basins of Iran. In this research Suspended Sediment Yield (SSY) and soil erosion are estimated about 350 and 1000 million ton per year respectively for the country. Average specific SSY are also calculated 214 t/km2/yr using 209 hydrometric stations records. The maximum average specific SSY are observed in Hamoon-e-Jazmoorian, Minab and Baloochestan-e-Jonobi, and Maroon and Zohreh second order basins with more than 700 t.km-2.Three significant regression equations are developed between SSY with area, mean annual discharge and specific discharge. This study shows that specific SSY is proportionally related to area, which means relatively higher erosion rates in piedmonts and hilly land to high mountains. Primary study of watersheds with more than 1000 t/km2/yr specific SSY shows that the susceptible geological formations, landslides and vegetation cover play important roles on specific SSY.