Journal of Soil and Plant Interactions
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University of Birjand
Abstract: (136 Views)
Evaluation of soil properties around plants in rangelands plays an important role in understanding the effect of vegetation on soil properties and consequently rangeland management. The carbon to nitrogen (C/N) ratio is a key factor in regulating the efficiency of nutrient use in plants, and on the other hand, this ratio has a direct effect on the rate of decomposition of organic compounds, and consequently the persistence of carbon in the soil. The aim of the present study is to determine and compare the amount of soil organic carbon, total nitrogen, and soil C/N ratio in different habitats and different life forms of plants native to arid and desert areas and cultivated in the rehabilitated rangelands of some counties in South Khorasan Province. The results showed that the amount of soil organic carbon in the studied habitats varied in the range of 0.07-0.97 percent. The highest average percentage of soil organic carbon was obtained from the soil where the plant Nitraria schoberi grew and the lowest average percentage was obtained from the soil where the plant Hymenocrater calycinus grew. The total nitrogen content of the soil varied between 0.006 and 0.14 percent. The soil C/N ratio varied from 3.61 to 71.50, and the average C/N ratio in the studied areas was 15.02. The results showed that the highest amount of nitrogen and soil organic carbon was in the habitat of shrub and bush species with the phanerophyte life form. It seems that shrub species with a higher canopy cover and biomass percentage and, as a result, more litter fall, contribute more to the recycling of nutrients than herbaceous species. The results revealed that the cultivation of the species Qaradagh (Nitraria schoberi) in restored rangelands increased soil carbon and nitrogen, therefore, the cultivation of this species is recommended in rangeland restoration programs and carbon sequestration projects.
Keywords: Bioform, Carbon sequestration, Organic matter, Rangeland restoration, Soil quality, Vegetation.
Type of Study: Research |
Subject:
Carbon sequestration and soil structure in the root zone and rhizosphere
Received: 2025/02/12 | Accepted: 2025/07/17
Received: 2025/02/12 | Accepted: 2025/07/17
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Journal of Soil and Plant Interactions by http://jspi.iut.ac.ir is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
