Journal
ECOLOGICAL INDICATORS
Volume 95, Issue -, Pages 825-830Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ecolind.2018.08.042
Keywords
FragMAP; Grazing intensity; Pielou's J index; Richness; Shannon index; Simpson index; The Qinghai-Tibetan Plateau
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Funding
- National Key R&D Program of China [2017YFA0604801]
- National Natural Science Foundation of China [41501081]
- Nantong Key Laboratory project [CP12016005]
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Species composition plays a critical role in environmental conservation, ecosystem functioning and health of grasslands. However, there is no efficient and long-term monitoring method. In this study, we developed a practical method with unmanned aerial vehicles (UAVs), and tested it along a range of grazing intensities in alpine meadow of the Qinghai-Tibetan Plateau. We found that 1) there were significant linear relationships of widely used species composition indices between this and traditional methods (P < 0.01); 2) along increasing grazing density, there were similar tendencies of these indices estimated by the two methods; 3) the new method was more representative than the traditional one though some specific species were difficult to identify. We concluded that this method is suitable for long-term repeated monitoring of grassland species composition, which will be useful for grassland conservation and management.
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