Maryam Kavianpour; Seyedeh Khadije Mahdavi; Mohammadreza Shahraki; Yaser GHasemi Arian
Volume 31, Issue 2 , August 2024, , Pages 149-168
Abstract
Background and purpose:Due to the occurrence of climate changes in recent decades, traditional animal husbandry systems based on rangelands have faced serious challenges. In this regard, the use of adaptation strategies is necessary as a solution to reduce the vulnerability of rangeland users. The present ...
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Background and purpose:Due to the occurrence of climate changes in recent decades, traditional animal husbandry systems based on rangelands have faced serious challenges. In this regard, the use of adaptation strategies is necessary as a solution to reduce the vulnerability of rangeland users. The present research has investigated the adaptation strategies of Turkmen pastoralists in the face of climate change in the Qaradong region of Golestan province. Materials and methods:This research is descriptive and has been carried out using a survey method. The research statistical population consists of 249 beneficiaries from 7 local communities in the Qaradong region of Golestan province, of which 148 people were selected as the sample size based on the Krejcie and Morgan table using a stratified random sampling method. The measuring tool of the research was a researcher-made questionnaire. The content validity of the questionnaire was confirmed by using the opinions of rangeland experts, and its reliability was confirmed by calculating the Cronbach's alpha coefficient. Results:The results showed that the degree of pastoralists' adaptation in the face of climate change is moderate to high. The findings indicate that there are significant differences in the use of climate change adaptation strategies among the pastoralists. Thus, combined-developmental, saving, correct consumption, and emergency strategies were identified as the most used strategies. Also, the results showed that there is a positive and significant relationship between adaptation of pastoralists in dealing with climate change with the history of livestock pastoralism and the amount of income derived from it at the 99% confidence level and also with the variables of age, the number of household members, and the amount of income from non-livestock occupations at the 95% confidence level. Conclusion: The livelihoods of the pastoralists are heavily dependent on the rangelands, and many of them have only one economic source. This causes the continuation of the climate change process to increase their vulnerability. Therefore, adopting new activities in the form of diversifying income sources and creating alternative livelihood opportunities, as well as multi-purpose use of rangelands, will bring more adaptability of pastoralists to climate changes.
Seyedeh khadijeh Mahdavi; Mahshid Souri; Ahmad Choupanian
Volume 22, Issue 2 , August 2015, , Pages 289-297
Abstract
Increased concentration of carbon dioxide in the atmosphere is the main cause of climate change, having harmful effects for human beings. Reducing the amount of this gas by inhibiting industrial development and the use of artificial methods is not suitable due to the lack of economic justification. Therefore, ...
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Increased concentration of carbon dioxide in the atmosphere is the main cause of climate change, having harmful effects for human beings. Reducing the amount of this gas by inhibiting industrial development and the use of artificial methods is not suitable due to the lack of economic justification. Therefore, taking advantage of carbon storage potential in plant tissue and soil has attracted much attention in recent decades. According to the different climatic zones in the country, studying the carbon sequestration in each of these areas should be taken into consideration. Therefore, the potential of soil carbon sequestration in the mountain rangelands of Kermanshah Province was studied in three height classes and four aspects. Then, soil samples were taken from two depths of 0-30 cm and 30-60 cm in the habitats of Astragalus gossypinus and Astragalu sparrowianus. Soil organic carbon, bulk density, electrical conductivity, pH, moisture content and soil texture were measured in both soil depths. Stepwise regression results showed that soil parameters including texture, bulk density and pH, were the most important factors, affecting soil organic carbon. Based on the results of data analysis in a completely randomized factorial design, significant differences were observed for soil carbon sequestration among height classes and aspects at 1% level of significance. According to the results of mean comparisons based on SNK test, the highest amount of carbon sequestration was observed in the third height class and north aspect. Our results clearly showed that Astragalus parrowianus had a higher potential in soil carbon sequestration as compared to Astragalus gossypinus.
Mir samad Mousavi; Khadejeh Mahdavi; Ahmad Ahmadi
Volume 18, Issue 3 , September 2011, , Pages 486-497
Abstract
Preservation, regeneration, development and management of renewable natural resources (especially vegetation cover) need precise and comprehensive knowledge. In this research, autecology of Caragana grandiflora sp. was studied in Poldasht, West Azarbayjan province. This species is a perennial plant from ...
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Preservation, regeneration, development and management of renewable natural resources (especially vegetation cover) need precise and comprehensive knowledge. In this research, autecology of Caragana grandiflora sp. was studied in Poldasht, West Azarbayjan province. This species is a perennial plant from Fabaceae family. To study the autecology of this perennial plant species, the habitat was determined by field observations and available reports and then climatic and edaphic characteristics of the habitat, plant root system, phenology, reproduction and food compounds were analyzed. The results showed that the habitat of this species was very limited and scattered throughout the North West of the study area. Mean annual precipitation of the habitat was 312.6 mm and mean annual temperature was 12.8 ċ. This species grows in calcic soils with a sandy texture and a PH of 7.5 to 7.67 and an EC of 7.05 to 1.22 ds m-1. The roots of this species is straight, branched and rhizomic that penetrates up to 1.2 m into soil and spreads out up to 3.2 m when encounters a hard and impervious layer. Study of this plant showed that its canopy cover was from 18.63% to 31.12%. Phenological phenomena begin when it sprouts at late February and continues till middle April in the study area. The flowering period is from May to June. It is full of the fruits from middle June and the seed ripens in July. The Laboratory data was analyzed by SPSS software mean comparison was done by Duncan test. Aboveground organ of the plant contains 21.94, 29.37 and 14.25 crude protein respectively in growth, flowering and seeding periods. This species is recommended for range improvement and reclamation in rangelands which have similar ecological condition to West Azarbayjan.