Fatemeh Narmashiri; mehdi ghorbani; Gholamreza Zehtabian; Hosein Azarnivand; Amir Alambeigi; Roland W Scholz
Volume 29, Issue 1 , February 2022, , Pages 53-65
Abstract
Desertification has been considered as a serious threat to arid, semi-arid and even semi-humid climate in recent decades and it is a major obstacle to sustainable global development, so monitoring its changes is urgent. Using remote sensing and GIS is one of the cost-effective, often free and accessible ...
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Desertification has been considered as a serious threat to arid, semi-arid and even semi-humid climate in recent decades and it is a major obstacle to sustainable global development, so monitoring its changes is urgent. Using remote sensing and GIS is one of the cost-effective, often free and accessible method to monitor changes in these areas. In this study, change vector analysis method was used for evaluation and analysis of desertification change in a part of Ghalehganj county in south of Kerman province. For this purpose, Landsat 8 image bands in two time periods of 2014 (first period) and 2020 period (second period) for March and April was used in Google Earth Engine. Image pre-processing were applied and averaging was done separately for both periods which was followed by calculation of EVI and BSI indices. For the next step, using these two indicators and the change vector analysis method in the GIS software, the magnitude and direction of desertification change trends were determined. The results of the present research indicated the dominance of the reclamation process in the region during the years studied and the overall results indicate that development of cultivated lands and land use change have the greatest impact on monitoring indicators and desertification trends in the region. Thus, degradation of lands around residential areas are witnessed and on the other hand, there is a significant relationship between agricultural activities and rehabilitation areas in the region.
Adeleh Khavar; mehdi ghorbani; Hosein Azarnivand; Amir Alambaigi; Shahram Khalighi Sigaroudi
Volume 28, Issue 2 , June 2021, , Pages 369-380
Abstract
One of the requirements for implementing natural resource governance and empowerment of rangeland users is the analysis of social relations in the social network of users. In this research, the analysis of the social network of rangeland users with an emphasis on the links of trust, participation, and ...
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One of the requirements for implementing natural resource governance and empowerment of rangeland users is the analysis of social relations in the social network of users. In this research, the analysis of the social network of rangeland users with an emphasis on the links of trust, participation, and consultation in rangeland management measures was compared with the calculation of macro-level indicators of the network in the three customary systems of Fasanqar, Parvand, and Malvand. Also, the complete network method (census) has been used, and in three customary systems, all rangeland users, including 100 people, have been considered a statistical population. The results show that among the users of the customary system, the amount of social capital, stability of relations, and network balance with a density of 50.8% on average and consultation between them with a rate of 43.8 and 40.5 for the two villages Malvand and Fasanqar are poorly institutionalized. Low social capital and low turnover of trust, participation and consultation between the users of these two villages are important challenges in creating a participatory management structure, and consequently, improving rangeland governance in these areas and the need to further strengthen social capital by increasing building trust in the network and creating the desire of users of all three customary systems to participate in rangeland activities to create success in rangeland governance. However, in the two villages of Malvand and Fasanqar, there is a need to further strengthen social relations and increase social capital compared to the Parvand village.
Mehdi Ghorbani; Leila Avazpour; Majid Rahimi; Homa Mousavi; Behnaz Esmaeli
Volume 25, Issue 2 , August 2018, , Pages 378-387
Abstract
Social capital is a prerequisite of co-management and local sustainable development. Present study makes an attempt to evaluate bonding social capital pre and post RFLDL project implementation in Deh-e-Reza village in Reagan County of Kerman province. Statistical population of ...
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Social capital is a prerequisite of co-management and local sustainable development. Present study makes an attempt to evaluate bonding social capital pre and post RFLDL project implementation in Deh-e-Reza village in Reagan County of Kerman province. Statistical population of this study consists of rural development groups’ members totaling 133 persons in 9 groups. The level of trust and collaboration ties of the beneficiaries’ network were examined through network analysis questionnaires, direct observation, and an interview with all beneficiaries based on network indicators including density, reciprocity, transitivity, and average Geodesic distance both prior to and post RFLDL project implementation. It was found out that the level of trust, collaboration, and social capital was moderate pre project implementation but there was an increase in these components following project implementation. Trust and collaboration exchange speed as well enhanced following project implementation and solidarity and unity increased on the whole. Last but not least, it can be claimed that implementation of this project boosted bonding social capital and co-management was established in the region.
mehdi ghorbani; leila avazpour
Volume 24, Issue 2 , July 2017, , Pages 383-391
Abstract
Degradation of arid and desert areas due to climate change and human activities has turned into a serious and alarming environmental challenge. The process of arid area management urged policy makers and planners to pay due attention to women as a focus group so that empowerment of women and winning ...
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Degradation of arid and desert areas due to climate change and human activities has turned into a serious and alarming environmental challenge. The process of arid area management urged policy makers and planners to pay due attention to women as a focus group so that empowerment of women and winning their collaboration is one of the fundamentals of development organizations of different countries. In present study, the social capital of rural women network was assessed through network analysis method by applying network analysis questionnaire and direct interview with members of women rural development groups in Tajmir village, Sarbishe County, South Khorasan province. As a matter of fact, trust and collaboration ties were measured based on macro-network indices (density, reciprocity, average Geodesic distance and the ratio of out-group ties to in-group ones). It was found out that the social capital and speed of the circulation of trust and collaboration bonds were moderate. Therefore, local community mobilization, social empowerment, social and economic stability of the relevant community, and last but not least, and the establishment of collaborative management necessitate an increase in the level of social capital, so that collaboration capacity is built to impact considerably on community-based collaborative management trend.
Hosein Arzani; Javad Motamedi; Ali Nikkhah; Hosein Azarnivand; Mehdi GHorbani
Volume 20, Issue 3 , November 2013, , Pages 333-344
Hossein Arzani; Javad Torkan; Ali Nikkhah; Hossein Azarnivand; Mahdi Ghorbani
Volume 17, Issue 2 , September 2010, , Pages 191-204
Abstract
Concepts of animal equivalent has been developed to express different kind and classes of grazing animal in common form. This concept is not fixed and usually determine on the basis of live weight and metabolic weight. More than 27 sheep breeds with different body size have been adapted and grazing on ...
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Concepts of animal equivalent has been developed to express different kind and classes of grazing animal in common form. This concept is not fixed and usually determine on the basis of live weight and metabolic weight. More than 27 sheep breeds with different body size have been adapted and grazing on rangelands in different climatic zones of Iran. So it is not correct to use the same animal unit weight for all. Therefore it is necessary to determine animal unit for each breed. In this study, two herds of West Azarbayjan Makoii breed were selected, 3 and 4 years old ewes, 3 and 4 years old rams and 3 and 6 months lambs were weighted in two stages in each herd. For determination of dry matter requirement forage quality was taken into consideration. Daily requirement of animal for maintenance condition was calculated using NRC (1985) tables and MAFF (1984) equation. On the basis of results; animal unit was obtained 45.36 ± 2.75 kg which is near to animal unit weight calculated for whole country based on weight of all breeds. Daily requirement of animal was obtained 9.50 Mj metabolisable energy equal to 1.77 kg dry matter of available forage
Hamid reza Naseri; Hosein Azarnivand; Mahdi Ghorbani; Zahra Mehrabanfar
Volume 15, Issue 1 , January 2008, , Pages 59-68
Abstract
This research was done in order to investigate the seed age effects (longevity) on germination of some sagebrush of species. East Azerbaijan was chosen as the collection sites and seeds of four species such as Artemisia fragrans, A. spicigera, A. campestris and A. vulgaris were collected from these sites. ...
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This research was done in order to investigate the seed age effects (longevity) on germination of some sagebrush of species. East Azerbaijan was chosen as the collection sites and seeds of four species such as Artemisia fragrans, A. spicigera, A. campestris and A. vulgaris were collected from these sites. Seed germination of these species was tested in the spring of the three following years and the data analyzed statistically. Results showed that seed ages have positive effects on the viability and germination of all species under study.. Minimum and maximum changes in seed germination belonged to Artemisia vulgaris and Artemisia spicigera respectively.
Hosein Arzani; Mahdi Abedi; Ehsan Shahriyari; Mahdi Ghorbani
Volume 14, Issue 1 , January 2007, , Pages 68-79
Abstract
Management activities like grazing intensity and land cultivation effects rangelands characteristic. For sustainable utilization of rangeland, information of changes is required. Soil surface indicators and functional attributes help to judging about management impact. So for investigation on these activities ...
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Management activities like grazing intensity and land cultivation effects rangelands characteristic. For sustainable utilization of rangeland, information of changes is required. Soil surface indicators and functional attributes help to judging about management impact. So for investigation on these activities effects in semi arid rangeland, one vegetation community was selected in Taleghan region. Five cases including: three grazing intensities (heavy, moderate and low), recently cultivated and relict areas that were cultivated in last two decades were assessed. Landscape function analysis (LFA) method was used to evaluate management effects on soil surface characteristics and rangeland functional attributes. In this method for determination of three functional attributes of stability, infiltration and nutrient cycle, 11 soil surface indicators were considered. They are soil surface cover (soil protection from erosion), perennial canopy/basal cover, litter (cover, origin, degree of decomposition), cryptogam cover, crust brokenness, type and severity of erosion, deposited material, soil surface roughness, soil surface resistance to distribution, slake test (soil stability test) and texture. Based on the results, land cultivation reduced functional attributes. By increasing grazing intensity, palatable species are eliminated and in heavy grazing area the dominated vegetation cover are annuals. Vegetation and soil surface layer degradation increased soil erosion, created gully and reduced functional attributes. In relict area because of re-establishing homogenous annuals, soil indicators and functional attribute were improved.
Hosein Azarnivand; Mahdi Ghorbani; Hamed Joneidi jafari
Volume 14, Issue 3 , January 2007, , Pages 352-358
Abstract
In this study, effect of salinity stress on germination of Artemisia scoparia and Artemisia vulgaris were investigated.Five salinity treatments included distilled water, 100,200,300 and 400 mM NaCl . Experimental design was factorial with CRD arrangement and 4 Replication. Result showed, Artemisia Scoparia ...
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In this study, effect of salinity stress on germination of Artemisia scoparia and Artemisia vulgaris were investigated.Five salinity treatments included distilled water, 100,200,300 and 400 mM NaCl . Experimental design was factorial with CRD arrangement and 4 Replication. Result showed, Artemisia Scoparia is more resistant than Artemisia Vulgaris and in both species germination decreased with increasing salinity.