Relationship of drought severity index with climatic factors on the Tibetan Plateau
Relationship of drought severity index with climatic factors on the Tibetan Plateau
Abstract It remains unclear how drought is varying under climatic change. Quantifying the relationship between drought and climatic factors is crucial for predicting future drought risk under global climatic change. Correlations of annual drought severity index (DSI) with climatic factors were examined from 2000 to 2011 on the Tibetan Plateau. Spatially averaged DSI increased with increasing precipitation and minimum relative humidity, but decreased with increasing sunshine. The degrees of correlation between DSI and climatic factors varied with vegetation types. The change magnitude of DSI decreased with increasing temperature, precipitation and vapor pressure, but increased with increasing wind speed and sunshine. Therefore, clarifying the correlation between drought and climatic change need consider ecosystem types and their local climate on the Tibetan Plateau.
Wang Xiangtao、Wang Jingsheng、Zhang Guangyu
XiZang Agriculture and Animal Husbandry College||Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesLhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of SciencesXiZang Agriculture and Animal Husbandry College||Lhasa Plateau Ecosystem Research Station, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences
大气科学（气象学）自然地理学环境科学理论
climatic changeecosystem typesprecipitationsunshineair humiditytemperature
Wang Xiangtao,Wang Jingsheng,Zhang Guangyu.Relationship of drought severity index with climatic factors on the Tibetan Plateau[EB/OL].(2025-03-28)[2025-08-02].https://www.biorxiv.org/content/10.1101/494815.点此复制
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