Sh. Ahmadi; R,. Dehghani Bidgoli; R. Heydari Soreshjani
Abstract
Medicinal plants, in addition to their role in improving health and human quality of life, can have a positive impact on tourism capacity and tourist attraction. In this study, the economic potential of medicinal plants and its impact on tourism development in Abadanan city of Ilam province was investigated. ...
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Medicinal plants, in addition to their role in improving health and human quality of life, can have a positive impact on tourism capacity and tourist attraction. In this study, the economic potential of medicinal plants and its impact on tourism development in Abadanan city of Ilam province was investigated. The study method was descriptive-analytical with data gathering in the library and field through the distribution of a researcher-made questionnaire. The social classes studied in this study included businessmen, ordinary people, students and teachers. The collected data were analyzed using statistical tests and for a better comparison, the results were presented using structural modeling method by AMOS software. The results showed that the medicinal plants tourism affects the economic indicators item with a weighted regression of 0.52. Also, the economic potential of medicinal plants with the factor loading of 0.494 and family income through the sale of medicinal plants with the factor loading of 0.130 had the highest and lowest indirect impact on tourism of medicinal plants, respectively.
F. Agah; M.A. Esmaeili; M. Farzam; R. Abbasi
Abstract
The consequence of climate change in the natural habitats of arid and semi-arid regions is the reduction of species diversity which highlights the necessity of domestication and cultivation of wild species in agricultural systems. The medicinal plant caper (Capparis spinosa L.) is one of the valuable ...
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The consequence of climate change in the natural habitats of arid and semi-arid regions is the reduction of species diversity which highlights the necessity of domestication and cultivation of wild species in agricultural systems. The medicinal plant caper (Capparis spinosa L.) is one of the valuable native plants in the natural arena that can be cultivated by recognizing patterns and stages of its growth in natural habitats and copying it .For this purpose, in order to study the ecological needs, phenological stages and growth habits of the valuable medicinal plant caper, the natural habitat of this plant in Mazdavand section of Sarakhs was selected and studies were conducted during 2016. The time interval for each phenological stage was calculated based on the number of days and growth degree day. Growth characteristics (canopy area, large and small canopy diameter and number of branches) were measured and the trend of changes was compared with sigmoid, quadratic, power and linear models. The results of ecological study showed that the habitat studied was affected by drought most of the year. Also, soil analysis showed that soil texture was silty loam, and soil acidity was in the alkaline range, and high amounts of EC at different soil depths also indicated high levels of salts in the soil. The habitat soil was poor in terms of macroelements (N, P and K) and organic carbon, and the amount of these elements were much lower than the optimum level in agricultural soils. Results showed that caper needs 211 days and 2745.3 degree days to complete its growth stages. Investigating the trend of growth changes in the habitat showed that the plant had a relatively high growth rate for canopy expansion in the first three months and after that growth rate decreased over time. Its growth pattern was best predicted by the sigmoid model. According to the results of the study on the growth habits of caper in the natural habitat and considering how it is spread on the land surface and its perennial life, it is recommended that the planting arrangement for caper in agricultural systems be designed so that the plants have enough space for canopy expansion.
H. Karami; M. Rasekh
Abstract
In this study, the thin layer drying kinetics of Tarragon (Artemisia dracunculus L.)was modeledin a hybrid dryer. Experiments were performed at four temperatures of 40, 50, 60, 70ºC and three air velocities of 1, 1.5 and 2 m/s in the factorial arrangement based on a completely randomized design. ...
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In this study, the thin layer drying kinetics of Tarragon (Artemisia dracunculus L.)was modeledin a hybrid dryer. Experiments were performed at four temperatures of 40, 50, 60, 70ºC and three air velocities of 1, 1.5 and 2 m/s in the factorial arrangement based on a completely randomized design. According to the results of analysis of variance, the effect of drying air temperature and drying air velocity were significant at 1% probability level. However, the interaction effect of temperature and drying air velocity was not significant. The highest essential oil content was related to the temperature of 40°C and an air velocity of 1.5m/s with an approximate value of 1.27CC (v/w). With increasing temperature from 40°C to 70°C, the essential oil content decreased significantly. According to the obtained results, the Agbashlo et al. model could estimate the kinetic curve of tarragon drying better than other models. The effective moisture diffusivity values were achieved to be in the range of 1.34×10−10-2.74×10−10 m2/s.
R. Shahsavarzadeh; M. Tarkesh; Z. Rahmati; M. Ghazizadeh
Abstract
Due to the insufficient information about the distribution of plant and animal species, the use of modeling to predict the distribution of species has increased in recent years. For this purpose, a wide range of modeling techniques has been developed. In this study, the potential distribution map of ...
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Due to the insufficient information about the distribution of plant and animal species, the use of modeling to predict the distribution of species has increased in recent years. For this purpose, a wide range of modeling techniques has been developed. In this study, the potential distribution map of Ferula ovina Boiss.was prepared using the environmental factors and occurrences data and genetic algorithms model (GARP). Species occurrences (137 sites) were collected using stratified random sampling method and all environmental layers including physiographic layers (slope, aspect and elevation derived from digital elevation model), climate and soil layers were produced using interpolation methods in ARCGIS (with a pixel size of 70 × 70 m). All data were analyzed by Desktop Garp and the distribution map of Ferula ovina was prepared. The model evaluation was performed by AUC of ROC plot, indicating a good performance of this model (AUC=0.766). According to the results of sensitive analysis, silt and elevation were the most important factors affecting the distribution of Ferula ovina. This model could be used in the interpretation of relationships between species and environment and assessing areas with high protection potential as well as determining suitable areas for the revival of Ferula ovina and climate change and management scenarios.
Z. karimian Fariman; A. Mousavi Bazaz; M. Banayan Aval
Abstract
Leaf area (LA) is a key variable for physiological studies, therefore accurate and simple models determining leaf area of plants are important for many experimental comparisons. Measuring the leaf area of Dracocephalum moldavica L. either as a medicinal plant or a vegetable is one of the most important ...
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Leaf area (LA) is a key variable for physiological studies, therefore accurate and simple models determining leaf area of plants are important for many experimental comparisons. Measuring the leaf area of Dracocephalum moldavica L. either as a medicinal plant or a vegetable is one of the most important factors. For this purpose, an experiment was conducted at research greenhouse of Ferdowsi University of Mashhad. For estimation of leaf area of this plant, leaf dry weight, leaf fresh weight and leaf dimensions (width and length) were measured. Regression analyses of LA versus FW, DW, L and W revealed several models that could be used for estimating the area of individual leaves of Dracocephalum moldavica. Among all models studied in this experiment, LA = 0.510(L+W)0.946 and LA=0.510(L2×W2)0.473provided the most accurate estimate (R2 = 0.887, RMSE = 0.655 and R2 = 0.887, RMSE = 0.656) of LA, respectively. It can be concluded that regressions using L×W and L2×W2 may better estimate the leaf area. However, leaf length and width solely didn’t display a good estimation of leaf area. Also these models were validated and showed that they could predict the leaf area of Dracocephalum moldavica quickly and precively.
E. Sharifi Ashoorabadi; A. Matin; M.H. Lebaschi
Volume 19, Issue 2 , August 2003, , Pages 157-182
Abstract
To investigate different method of soil fertilization and their effects on physiological growth indices a filed experiment was carried out on Fennel (Foeniculum vulgare Mill.) a medicinal plant, in Alborz Research complex, (NPK), used in commercial agriculture systems, a mixture of different ratios of ...
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To investigate different method of soil fertilization and their effects on physiological growth indices a filed experiment was carried out on Fennel (Foeniculum vulgare Mill.) a medicinal plant, in Alborz Research complex, (NPK), used in commercial agriculture systems, a mixture of different ratios of fertilizers and manure, used in intermediate systems as well as different levels of manure used in sustainable systems, with were in comparison to the control (no fertilizers and manure applied) that selection in three systems. The experiment was conducted using a randomized complete blocks design with three replication. The physiological growth indices, such as dry matter, Leaf area index, and relative growth rate were determined. Dry matter and leaf area index in the intermediate system "20 tonha -1 of manure mixed with N=80, P=64 and K=80 kgha-1 of chemical fertilizers" pointed a noticeable increase during plant growth, compared to the methods. Seed yield increased %93.2, %14.1 and %8.6 related to control, chemical and organic systems respectively. In seed, the essential oil was %3.18 that increased %22.8 related to control and chemical system respectively and %10.8 related to organic system. In the essential oil, anethole increased. Application of intermediate system improved soil physical, chemical and biologica properties and raised absorption of nutrient, plant canopy and light interception in agroecosystes.
