Research Article

Response of Soil Respiration to Grazing in an Alpine Meadow at Three Elevations in Tibet

Figure 2

Effects of grazing on dissolved organic C (DOC, mg kg−1), dissolved organic N (DON, mg kg−1), the ratio of DOC and DON (DOC/DON ratio), nitrate N ( -N, mg kg−1), ammonium N ( -N, mg kg−1), soil available N (SAN, mg kg−1), the ratio of -N and -N ( -N/ -N ratio), and belowground root biomass (BGB, kg m−2) in an alpine meadow at three elevations (i.e., 4313 m, 4513 m, and 4693 m) on the Tibetan Plateau. Error bars represent standard error ( ). MBC and SOC data were obtained from Fu et al. [22].
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