To investigate the impact of biomass burning (BB) emissions on total suspended particulate (TSP) in the southeastern Tibetan Plateau (TP), BB tracers (including levoglucosan, mannosan, and galactosan) were measured at Lulang (a remote site, ∼3300 m above sea level) during the period 2015–2016. The concentrations of levoglucosan and mannosan showed large variability of more than 8-fold (range: 0.029–0.253 μg m−3) and 6-fold (range: 0.01–0.061 μg m−3), respectively. The highest seasonal average concentrations of levoglucosan (0.131 ± 0.073 μg m−3) and mannosan (0.028 ± 0.019 μg m−3) were observed during the winter season. The BB contributions to the TSP organic carbon (OC) and TSP mass were estimated with positive matrix factorization (PMF) by using BB tracers, inorganic ions, elements, OC, and EC. The BB contributions to the TSP OC and TSP mass were quite substantial in winter with 26% and 14%, respectively. The results evidenced a major contribution of BB to the aerosol OC during winter season. Major potential source distributions of BB were identified, which included the pollution bands along the Indo-Gangetic Plain, the Yarlung Tsangpo River Valley and the interior of the TP. In addition to the long-range transport of BB, the sources of anthropogenic emissions (residential BB for cooking and heating) in the TP may be an important contributor. The results facilitated understanding of the characteristics and effects of BB in the TP.

中文翻译：

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青藏高原东南部生物质燃烧对总悬浮颗粒物的影响

为了研究生物质燃烧 (BB) 排放对青藏高原东南部 (TP) 总悬浮颗粒物 (TSP) 的影响，在鲁朗（一个偏远地区，约 3300 m）测量了 BB 示踪剂（包括左旋葡聚糖、甘露聚糖和半乳糖）海平面以上）在 2015-2016 年期间。左旋葡聚糖和甘露聚糖的浓度分别显示出超过 8 倍（范围：0.029-0.253 μg m-3）和 6 倍（范围：0.01-0.061 μg m-3）的较大变异性。在冬季观察到左旋葡聚糖 (0.131 ± 0.073 μg m-3) 和甘露聚糖 (0.028 ± 0.019 μg m-3) 的最高季节性平均浓度。BB 对 TSP 有机碳 (OC) 和 TSP 质量的贡献通过使用 BB 示踪剂、无机离子、元素、OC 和 EC 使用正矩阵分解 (PMF) 估计。BB 对 TSP OC 和 TSP 质量的贡献在冬季相当可观，分别为 26% 和 14%。结果证明了 BB 在冬季对气溶胶 OC 的主要贡献。确定了 BB 的主要潜在源分布，包括沿印度恒河平原、雅鲁藏布江流域和青藏高原内部的污染带。除了 BB 的远距离迁移外，TP 中的人为排放源（用于烹饪和取暖的住宅 BB）可能是一个重要的贡献者。结果有助于理解 BB 在 TP 中的特征和作用。其中包括印度-恒河平原、雅鲁藏布江流域和青藏高原内部的污染带。除了 BB 的远距离迁移外，TP 中的人为排放源（用于烹饪和取暖的住宅 BB）可能是一个重要的贡献者。结果有助于理解 BB 在 TP 中的特征和作用。其中包括印度-恒河平原、雅鲁藏布江流域和青藏高原内部的污染带。除了 BB 的远距离迁移外，TP 中的人为排放源（用于烹饪和取暖的住宅 BB）可能是一个重要的贡献者。结果有助于理解 BB 在 TP 中的特征和作用。