Moghbeli, Zahra (2015) Effect of different grazing intensity on organic carbon storage and soil nitrogen storage in rangeland of Varamin city of Jiroft. Masters thesis, University of Zabol.
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Abstract
Considering the importance and necessity of understanding soil properties, especially it’s chemical properties in managing of rangeland ecosystems, this reseach is done, in order to study grazing effects on physical and chemical characteristics of soil, especially storages of carbon and organic nitrogen in soil and vegetation in three regions: reference, key and crisis in rangeland of Varamin city of Jiroft. For this purpose by field visit, the study area was divided into three grazing ranges: light (reference), medium (key) and heavy grazing (crisis). And in each range, soil and vegetation were sampled from five points using nested putting plot, so that 5 plot and overall 75 plots were deployed in each range. In each plot, soil samples were picked from zero to 30 cm depth by using Auger machine. Then, chemical factors (phosphorus, carbon, nitrogen organic carbon storage, organic nitrogen storage, electrical conductivity) and physical factors (soil texture, soil bulk density) were determined according to standard methods. With species identification, their density in each plot and the list of available species were recorded. Also, indicators of richness, diversity, density, uniformity and persistency in each grazing intensity were studied and estimated. Data analysis was conducted by using SPSS software in completely randomized block design. Effectiveness of different intensities of grazing on soil conditions and vegetation were studied. Statistical results showed that heavy grazing was greatest effect on amount of potassium, lime, acidity, organic matter, organic carbon storage and soil nitrogen storage and density of annual species, rocks and pebbles and bare soil and light grazing was greatest effect on phosphorus, richness and diversity and uniformity. In general, it can be concluded heavy grazing had greatest impact on soil and vegetation of region through kicking and grazing. Heavy grazing had a negative impact on vegetation and soil, medium and light grazing not had negative impact on soil and vegetation.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Organic carbon storage, Organic nitrogen storage, Richness of species, Grazing |
| Subjects: | S Agriculture > S Agriculture (General) |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 16 Apr 2017 09:35 |
| Last Modified: | 16 Apr 2017 09:35 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/1216 |
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