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Showing 2 results for Kord
Behrouz Kord, Amin Khademi, Morteza Madanipour-Kermanshahi, Sara Pourabbasi ,
Volume 14, Issue 3 (Autumn 2022)
Abstract
Phytoremediation is a kind of natural and sustainable technique, easy, low-cost, eco-friendly, environmentally friendly and applicable in wide areas, in which resistant plants are used to purify soils contaminated with organic and mineral compounds. This research was carried out with the aim of evaluating the phytoremediation ability of tree species such as Locust tree (Robinia peseudoacacia L.), Elm tree (Ulmus carpinifolia var umbraculifera Rehd.), Tree of Heaven (Ailanthus altissima) and Judas tree (Cercis siliquastrum) in soils contaminated with lead and cadmium heavy metals in Eynak Wetland in Rasht. For this aim in polluted sites and controlled site, Considering the main wind direction, one Transect is selected and sampling from leaves and surface roots was done with statistical method in completely randomized plot design with three replicates. Then lead and Cadmium content density in each samples was determined by Atomic absorption instrument model Perkin-Elmer 3030.Results indicated that the concentration of lead and cadmium in polluted sites tree more than the control sites. Also Locust tree, Tree of Heaven and Judas tree species have the highest translocation factor of Lead (0.59 ppm, 0.56 ppm, 0.19 ppm) and Cadmium (0.56 ppm, 0.38 ppm, 0.19ppm) respectively. According to this issue and appropriate adaptation conditions, these species can be widely used in Phytoremediation projects of soils contaminated with lead and cadmium under the same conditions.
Dr Amin Khademi, Dr Morteza Madanipour Kermanshahi, Behrouz Kord,
Volume 15, Issue 2 (Summer 2023)
Abstract
Poplars and their hybrids due to their fast growth, easy vegetative propagation, high potential for Change features and wide distribution in the Northern Hemisphere, and rapid biomass storage capacity are economically valuable. With the objective of estimating the biomass of Poplar species around the watershed of Qezel-Ozan River in Khalkhal, statistical surveying of Poplar stands was done in a transect manner. The quantitative characteristics of the diameter at the breast and the height of the tree trunks were collected. The amount of biomass storage was estimated by allometric method and using cut trees. 32 trees were selected from the gardens around each river and after measuring the diameter at the breast and the height of the trunk, three discs with a thickness of 10 cm were provided from the beginning, middle, and end of the trunk. According to the dry weight and volume of the discs and trunk of each tree, biomass was determined. The cross-evaluation of the estimated and actual values of the data showed that the amount of biomass estimation with the independent variable of trunk height has less error than the estimation with the breast at diameter independent variable. Although the coefficient of determination value of the cross-evaluation shows the estimated and actual values with the diameter equal to the breast at a diameter more than the height of the trunk, this variable has a large error and is not suitable for The amount of biomass in the investigated area. The results of the F test revealed that the average amount of trunk biomass reserves in the studied habitats have a significant difference in the two independent variables (breast at diameter and trunk height) and the results of Duncan's test demonstrated that the mean biomass of trunks in the 4 studied habitats are in three different groups in each independent variable (diameter and height of the trunk).
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