The Response of Grazed Vegetation in Relation to the Type of Landscape in the Flat Rangelands, Uzbekistan
The dataset describes the information collected on the response of grazed vegetation in relation to landscape type in the flat rangelands of Uzbekistan over two seasons in 2016 (autumn and spring). We used a grazing gradient approach as a main tool to detect fine-scale changes in vegetation composition and its structure. Three monitoring sites with different levels of livestock grazing were selected for conducting the vegetation surveys: rangeland areas around 2 watering wells and one rangeland area with no/limited livestock grazing. The rangeland vegetation around 2 watering wells was surveyed as a distance away from the watering well. Three transects radiating in 3 directions from the center of the well were allocated at every 120 degrees apart from North. The length of each transect ranged between 3.0-3.5 km from the center of the well. Along each transect, as a distance away from the well, 3 stops were selected to detect vegetation changes caused by different levels of livestock grazing. In total 9 stops were monitored around each watering well. The site is typical sandy rangeland of Kyzylkum desert in Karakalpakstan in West Uzbekistan, dominated by white saxaul (Haloxylon persicum Bunge ex Boiss. & Buhse) while the Ferulafoetida (Bunge) Regel is widely expanded in areas with high load of livestock grazing. The vegetation measurements basically included biomass, cover and density of perennial plants, the biomass of annuals, monitored using 1 square meter quadrat in scarce vegetation of sand rangelands. The total numbers of shrubs of each species were counted and separated into 3 size categories (big, medium, small). For each species within every size category, 3 representative plants were clipped for the determination of annual green biomass using the reference technique. Biomass production of ephemerals and ephemerides was identified within1 square meter quadrats frame, randomly distributed with 3 replications. The cover of shrub species (described through the line intercept) was determined along a line intercept using a tape measure 100 m long.
| Autores principales: | , , |
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| Otros Autores: | |
| Idioma: | English |
| Publicado: |
MELDATA
2016
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| Materias: | Agricultural Sciences, livestock, rangelands, biomass, goal 15 life on land, |
| Acceso en línea: | https://hdl.handle.net/20.500.11766.1/FK2/L7XSN8 |
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