研究目的
To document and analyse sheep grazing and movement behaviour through the deployment of GPS collars, and to analyse their impact on the grazing lands in arid Rajasthan.
研究成果
The study concludes that sheep migration is a coping mechanism for fodder and water scarcity in arid regions. Grazing significantly reduces non-photosynthetic biomass, and NDVI is lower inside grazing areas. The research highlights the need for sustainable grazing management to prevent land degradation.
研究不足
The study is limited by the reliance on satellite data and GPS collars, which may not capture all nuances of grazing behavior and land degradation. The analysis is also constrained by the availability of rainfall data and the specific conditions of the study area.
1：Experimental Design and Method Selection:
The study utilized GPS collars to monitor sheep migration and analyzed the impact on grazing lands using NDVI from satellite data.
2：Sample Selection and Data Sources:
Two herd groups from Nimbol village were selected based on large flock size, long-duration migration, and permission from herders. Data was collected using ATS plus GPS collars and satellite images.
3：List of Experimental Equipment and Materials:
GPS collars, IRS-P6 MX data, Landsat TM, and IRS-LISS-III satellite data.
4：Experimental Procedures and Operational Workflow:
GPS data was plotted on land use maps to analyze sheep movement and grazing behavior. NDVI was calculated to assess vegetation density and biomass.
5：Data Analysis Methods:
NDVI statistics were calculated from land use polygons to understand grazing behavior with respect to biomass availability.
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