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The relationship between drought activity and vegetation cover in Northwest China from 1982 to 2013

Author

Listed:
  • Yelin Jiang

    (Nanjing University of Information Science and Technology
    Collaborative Innovation Center on Atmospheric Environment and Equipment Technology)

  • Ranghui Wang

    (Nanjing University of Information Science and Technology
    Collaborative Innovation Center on Atmospheric Environment and Equipment Technology)

  • Qing Peng

    (Nanjing University of Information Science and Technology)

  • Xiaoquan Wu

    (Nanjing University of Information Science and Technology)

  • Husen Ning

    (Xinjiang Academy of Forestry Science)

  • Cheng Li

    (Nanjing University of Information Science and Technology)

Abstract

We investigated drought activity and the relationship between drought and vegetation in Northwest China over the period 1982–2013 using the standardized precipitation evapotranspiration index (SPEI) and the normalized difference vegetation index (NDVI). The indexes were, respectively, calculated from ground-based meteorological data and from remotely sensed satellite data. The spatial and temporal distributions of drought (SPEI) and of vegetation cover (NDVI) were compared using annual trends, and the relationships between these trends were analyzed. The results are: (1) Overall, Northwest China had a drought trend during the study period, although some a few regions show a significant wetness trend; (2) the mean annual NDVI fluctuates, but overall shows an increasing trend, particularly in some mountainous areas that have at least adequate water and vegetation cover, while unused land becomes degraded; (3) most regions show a positive correlation between SPEI and NDVI, although the western parts of the Tarim basin, Qaidam basin, and some regions in the southeastern part of study area show a negative correlation; and (4) the various regions respond differently to global climate change, but in general regions with more vegetation cover show increased vegetation growth, while regions with less vegetation cover are becoming degraded and thus more vulnerable to the adverse effects of climate change.

Suggested Citation

  • Yelin Jiang & Ranghui Wang & Qing Peng & Xiaoquan Wu & Husen Ning & Cheng Li, 2018. "The relationship between drought activity and vegetation cover in Northwest China from 1982 to 2013," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 92(1), pages 145-163, November.
    • Handle: RePEc:spr:nathaz:v:92:y:2018:i:1:d:10.1007_s11069-018-3282-3
    DOI: 10.1007/s11069-018-3282-3
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    References listed on IDEAS

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    1. Lingkui Meng & Ting Dong & Wen Zhang, 2016. "Drought monitoring using an Integrated Drought Condition Index (IDCI) derived from multi-sensor remote sensing data," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 80(2), pages 1135-1152, January.
    2. Robert V. Rohli & Nazla Bushra & Nina S. N. Lam & Lei Zou & Volodymyr Mihunov & Margaret A. Reams & Jennifer E. Argote, 2016. "Drought indices as drought predictors in the south-central USA," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 83(3), pages 1567-1582, September.
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    4. Lingkui Meng & Ting Dong & Wen Zhang, 2016. "Drought monitoring using an Integrated Drought Condition Index (IDCI) derived from multi-sensor remote sensing data," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 80(2), pages 1135-1152, January.
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    Cited by:

    1. Jiwei Sun & Shuoben Bi & Bashar Bashir & Zhangxi Ge & Kexin Wu & Abdullah Alsalman & Brian Odhiambo Ayugi & Karam Alsafadi, 2023. "Historical Trends and Characteristics of Meteorological Drought Based on Standardized Precipitation Index and Standardized Precipitation Evapotranspiration Index over the Past 70 Years in China (1951–," Sustainability, MDPI, vol. 15(14), pages 1-25, July.

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