Mohsen Bagheri Bodaghabadi; Naser Davatgar; Shokrollah Hajivand
Abstract
Human activities in the range of natural resources affect the sustainability or instability of ecosystems. Therefore, data interpretation and analysis related to these activities can play a pivotal role in assessing environmental issues and problems. The aim of this study was to analyze human activities ...
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Human activities in the range of natural resources affect the sustainability or instability of ecosystems. Therefore, data interpretation and analysis related to these activities can play a pivotal role in assessing environmental issues and problems. The aim of this study was to analyze human activities in the watershed to investigate the development of rainfed orchards on sloping lands and the stability or instability of related activities. For this purpose, field studies were conducted in two regions of arid (Birjand) and Mediterranean (Khalkhal) and the impact of the orchard estabilishment on the lands of these regions was analyzed. Contrary to expectations, in the arid region with about 170 mm of rainfall, the orchard estabilishment was successful and accompanied by sustainable development, and in the Mediterranean region with more than 350 mm of rainfall, this project was considered failed and unstable. One of the most important factors for the success of this project in the arid region was having indigenous knowledge in creating dams in suitable areas by collecting runoff and sediments, according to the parent materials and the resulting soil. In contrast, the lack of indigenous or formal knowledge in the Mediterranean region, followed by a lack of attention to soil constraints, some of which are affected by parent materials, is one of the main reasons for the failure of the project in this region. Based on the results, For sustainable management special attention should be paid to indigenous knowledge along with formal knowledge.
Mohsen Bagheri Bodaghabadi; Mohammad Jamshidi; Zohreh Mosleh
Abstract
Soil organic carbon (OC) is one of the most important soil properties, especially from an environmental point of view. For this reason, OC modeling and estimating has been highly considered. In modeling, application of pedotransfer functions to estimate soil properties from the other ones have an important ...
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Soil organic carbon (OC) is one of the most important soil properties, especially from an environmental point of view. For this reason, OC modeling and estimating has been highly considered. In modeling, application of pedotransfer functions to estimate soil properties from the other ones have an important place in soil science. Unfortunately, not much attention has been paid to the valuable data that are obtained with the least cost and time in the soil profile description. The aim of this study was to determine the importance of data that obtained from soil profile description to estimate the soil organic carbon in Dehgolan region in Kordestan Province. For this purpose, 30 pedons were excavated and described. Soil samples were collected from different horizons and soil properties such as texture, pH, EC, CCE and gypsum were determined. Modeling was performed in three scenario including laboratory data, data of soil profile description and application of laboratory and soil profile description data simultaneously. The results showed that based on laboratory data, soil organic carbon has a significant relationship with silt and CCE properties with a coefficient of determination about 25% (R2 = 0.25); While, the two soil profile description data of soil color (chroma) and genetic horizon with coefficients of determination about 65% (R2 = 0.65). With compilation of laboratory and soil profile description data the coefficient of determination was also obtained 65%. This level of accuracy clearly shows the value and importance of data related to the soil profile description data.
