Hamidreza Mirdavoudi; Ehsan Zandi Esfahan; Gholamreza Goudarzi; Ali Famaheini
Volume 28, Issue 2 , June 2021, , Pages 328-340
Abstract
In this study, the initial assessment of carbon storage in plant communities of Lycium depressum Stocks and Zygophylum fabago L. was done in the Meyghan playa, Arak. Plant sampling was done by the random-systematic method. To determine the aboveground and underground biomass, ...
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In this study, the initial assessment of carbon storage in plant communities of Lycium depressum Stocks and Zygophylum fabago L. was done in the Meyghan playa, Arak. Plant sampling was done by the random-systematic method. To determine the aboveground and underground biomass, a clipping method was used, and these organs were weighed separately. The organic carbon of plant samples was determined by the ash method. Soil studies were performed in each plant type, in the depth of plant rooting, as well as in areas without plants. The data were analyzed by SPSS24 software. The results showed that the soil and plant average carbon sequestration of Z. fabago habitat was 14.61 and 0.18, and in L. depressum type was 13.8 and 0.425 ton/ha. This difference was not significant at the 5% level. Soil carbon sequestration increased significantly in areas covered with studied species (t = - 6.902, p < /em> = 0.001), compared to the areas without any vegetation cover. The carbon conversion coefficient of above and underground organs of the studied plants was significant at the level of 5% and the carbon sequestration of aboveground parts of the plant to underground carbon sequestrated ratio in Z. fabago and L. depressum was 2.43 and 2.08, respectively. Considering the carbon storage capacity of plants studied (in the soil and plant), it can be concluded that these plants can play an important role in carbon sequestration at the least possible cost, and mitigation of climate change consequences in arid regions.
Mohammadamin Soltanipour; Ehsan Zandi Esfahan
Volume 28, Issue 1 , April 2021, , Pages 55-68
Abstract
To determine the nutritional value of five halophytes, Aeluropus lagopoides, Atriplex leucoclada, Desmostachya bipinnata, Halopyrum mucronatum, and Halocnemum strobilaceum, this study was conducted in 2016 in Hormozgan province. Plant samples were collected in three phenological stages ...
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To determine the nutritional value of five halophytes, Aeluropus lagopoides, Atriplex leucoclada, Desmostachya bipinnata, Halopyrum mucronatum, and Halocnemum strobilaceum, this study was conducted in 2016 in Hormozgan province. Plant samples were collected in three phenological stages including vegetative growth, flowering and seeding, and eight forage quality traits (CP, DMD, WSC, ADF, CF, NDF, ME and ash percentage were measured. Data analysis of variance was performed as a factorial experiment in a completely randomized design and the means were compared with Duncan's multiple rsnge test in SPSS software. The results showed that the effect of species for all traits, the effect of phenological growth stages for four traits: (CP), (DMD), (ash), and (ME), and the interaction effect of species and phenological growth stage were significant for all quality indicators except (WSC). The highest forage quality was obtained at vegetative growth stage and Atriplex leucoclada was superior to other halophytes in terms of nutritional value. Therefore, the use of this native species instead of non-native ones of this genus is recommended in rangeland improvement of areas with similar rainfall.
Seyed Mahdi Adnani; Mohammad Reza Tatian; Ehsan Zandi Esfahan; Reza Tamartash; Hosein Bagheri
Volume 27, Issue 2 , June 2020, , Pages 215-223
Abstract
Important and influential factors on livestock production in arid areas are limited water resources, increasing salinity and lack of food. Halophytes are especially important in saline habitats as alternative forage sources. Forage quality is one of the main factors determining the nutritional requirements ...
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Important and influential factors on livestock production in arid areas are limited water resources, increasing salinity and lack of food. Halophytes are especially important in saline habitats as alternative forage sources. Forage quality is one of the main factors determining the nutritional requirements of livestock and subsequently the grazing capacity of rangelands. Determination of forage quality of rangeland species is one of the fundamental factors for proper rangeland management. The quality of forage varies in different places and times and different factors affect it. Awareness of forage quality of halophytes at each phenological stage, not only helps beneficiaries in arid and desert areas to select suitable plant species for planting in haloculture programs, but also sets the appropriate time for grazing to achieve greater livestock performance in saline lands. In the present study, the effects of phenological stages on eight forage quality traits were investigated for three halophytes ie., Halocnemum strobilaceum, Nitraria schoberi and Suaeda aegyptiaca. Plant samples were collected in vegetative, flowering, and seeding stages from saline lands in the margin of Houze Sultan, Qom province. Data were analyzed by a factorial experiment in a completely randomized design. Duncan mean comparison test was performed. The results showed that the effects of species and phenological stages on forage quality were significant (p < /em><0.01). In general, the results of this study indicated the superiority of Ha. strobilaceum in terms of nutritional value compared to Ni. schoberi and Su. aegyptiaca, so that it can be considered as a new source of forage in the lands affected by salinity.
Sedigheh Zarekia; Ali Ashrar Jafari; Ehsan Zandi Esfahan; Leila Fallah Hosseini
Volume 20, Issue 1 , June 2013, , Pages 88-100
Abstract
To investigate the germination of perennial herbaceous Astragalus, six species in different accessions were selected to be studied in a randomized complete block design in which three treatments including control, scarification and chilling were applied for one week with three replications. The study ...
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To investigate the germination of perennial herbaceous Astragalus, six species in different accessions were selected to be studied in a randomized complete block design in which three treatments including control, scarification and chilling were applied for one week with three replications. The study was carried out in the laboratory of Gene Bank at RIFR. Germination percentage, germination rate, plumule and radicle lengths, vigor index and ratio of radicle to plumule length were measured. All data were analyzed and the studied species showed significant differences in terms of the mentioned germination parameters except radicle length and ratio of radicle to plumule while differences among treatments were significant for all traits except radicle length. Interaction effects of species*treatment were also significant except radicle length and vigor index. Maximum and minimum values of germination traits were recorded for A. vegetus and A. lilacinus, respectively and other species were classified as average. The values of germination traits in chilling treatment were less than that in control treatment and it can be concluded that the cultivation of these species in autumn and winter may cause unsuccessful establishment. According to the results, A. vegetus was identified as a suitable species for range improvement in terms of most germination traits.