Karstic lands are one of the important resources in Iran and in the world. Therefore, investigation of these catchments are necessary for better using. In this article, the main objective is to compare hydrological characteristics of two types of catchments, calcareous rock and noncalcareous rock formed. Vehrgan catchments is a karstic watershed that mostly covered by limestone, and is located in Zagross mountain ranges on the Chahar-mahal-bakhtiary, Esfahan and Lorestan states boundaries, compared with a nonkarstic catchments, namely Golpayegan catchments that having a 160 kilometers distance from west of Esfahan and north of Vehregan in view of maximum discharges, runoff coefficient, specific discharge and relation between maximum instantaneous discharge and maximum daily mean discharge with the similar climate, catchments area, slope and annual rainfall. This study indicates that runoff coefficient is 1.28 for Vehregan's karstic catchments and is 0.32 for Golpayegan that is a non-karstic catchments. Specific discharge for vehregan catchments on a concurrent period is 0.0174 and for Golpayegan is 0.051 discharges for vehrgan catchments on a concurrent period is 0.0174 and for Golpayegan is 0.051 m3/sec/km2. Relation between maximum instantaneous discharge and maximum daily mean discharge in the water year 49-69 for vehregan karstic catchments is between 1.001 and 1.76 with an average of 1.45. This relation for Golpaygan catchments for that period is between 1.01 and 2.01 with an average of 1.38. The main result of this study is that application of rational and empirical formulas for karstic catchments is unreliable.

Salintiy is an important environmental stress which restrict agricultural yield. The effect of salt (NaCl) was studied on germination and vegetative growth of two alfalfa (Australian line 2129 and Ghra-Youngeh, Iranian alfalfa) and one sainfoin from Golpaygan, Iran. The split-plots experimental design was used to carry out the main effect (genotypes) and salt levels as sub plots (0, 75, 125, 175 and 225 mM). There were two separate experiments, one for germination and the other at vegetative stage. Plants were establish in the pots at glass house. All pots were irrigated for 52 days with tap water. Then, they irrigated with 200 cm3 water containing the five levels of salt, for 49 days, and one time per week.The leaf water potential, shoot height, root length and shoot and root dry weight were recorded. At low levels of salinity (0, 75 and 125 mM), the Australian line 2129 had greater germination and vegetative growth than the Iranian alfalfa (Gharah-Youngeh) and sainfoin, whereas at high levels of salinity (175 and 225 mM) Gharah- Youngeh had greater germination and vegetative growth than the Australian alfalfa and sainfoin.Although the Golpayganian sainfoin had lower growth rate than the two alfalfa genotypes at all levels of salinity, but had lower leaf water potential. It means, sainfoin may have greater salt tolerance.

Muteh Metamorphic- Magmatic belt, in the northwestern part of Sanandaj- Sirjan zone and the NE of Golpaygan, is composed of metamorphosed deformed sequences of sedimentary, volcanic (basic and acid) and volcano-sedimentary rocks. This belt consists of three separatable complexes including gneiss complex, green-schist complex and slate complex, from bottom to top, based on lithology, metamorphic facies and even the style of deformation.Metamorphic complexes of Muteh region have undergone progressively three metamorphic-deformation events to amphibolite facies, therefore, represent a Poly-metamorphic character. The effects of Late Cimmerian and Laramian orogenies and their related acidic plutonism, have partly obliterated all the previous events in this region, but the Early Cimmerian orogenic phase is considered as the most important metamorphic deformation event in the southeastern part of Sanandaj-Sirjan zone by various geologists. Dating on various samples of the region indicates the granitoid bodies were emplaced of Middle to Late Cretaceous, Late Paleocene and Paleocene-Eocene.

The Mouteh area is located 270-km southwest of Tehran. It is a part of Sanandaj-sirjan Zone and contains metamorphosed igneous-sedimentary complex (predominantly composed of mica-schist, mylonitic felsic met igneous rocks), granitoids and sedimentary assemblage. A progressive deformation affected on these lithologic assemblage. This process contains three deformation stages including: D1, D2 and D3. Result of the first deformation stage (D1) is production of a compositional layering in different parts of this area containing alteration of layers rich in felsic (quartz and feldpar) and mafic (biotite and amphibol) minerals. Structural event that produced this compositional layering (s1) has been overprinted by following stages. The second stage of deformation that is the most important event of deformation in the Mouteh and adjacent areas developed a penetrative mylonitic foliation (S2 =Sm) and stretching/ mineral lineation (Lm). Folds that are related to this stage, have high amplitude and low wavelegth and their inter-limb angle is less than 30 (tight to isoclinal).Many of these folds of this stage (fold axes and stretching lineation) have shallowly plunging in different parts of the area. Trend of deformation produced open folds that has changed position of the second structural elements development of dextral en-echelon fault system with sinistral-revers sense of movement is the main character of this stage. Several joint systems are related to this event. The most activity of magmatism occurred during this stage. The mouteh granitoid appears to intruded after DJ & D2 deformations along "transtension shear zones". This deformation was accompanied by remobilization of quartz pyrite and chalcopyrite(hosting gold)from granitoid intrusion.