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Characterization and Evaluation of MODIS-Derived Crop Water Stress Index (CWSI) for Monitoring Drought from 2001 to 2017 over Inner Mongolia

Author

Listed:
  • Zi-Ce Ma

    (School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

  • Peng Sun

    (School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China
    State Key Laboratory of Surface Process and Resource Ecology, Beijing Normal University, Beijing 100875, China
    Academy of Disaster Reduction and Emergency Management, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China)

  • Qiang Zhang

    (State Key Laboratory of Surface Process and Resource Ecology, Beijing Normal University, Beijing 100875, China
    Academy of Disaster Reduction and Emergency Management, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China)

  • Yu-Qian Hu

    (School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

  • Wei Jiang

    (School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

Abstract

Inner Mongolia is one of the main green production bases of agricultural and animal husbandry products. Due to factors such as natural geographical location, drought occurs frequently in Inner Mongolia. Based on the MOD16 product and the method of crop water stress index (CWSI) combined with multi-year precipitation and temperature data, the spatial and temporal distribution characteristics and major influencing factors of drought in Inner Mongolia from 2001 to 2017 were analyzed. In order to provide effective scientific basis for drought control and drought resistance in Inner Mongolia for decision. The results showed that: (1) during 2001–2017, the average annual CWSI in Inner Mongolia had a strong spatial heterogeneity, which showed a trend of gradual increase from northeast to southwest. The annual average CWSI was 0.7787 and showed a fluctuating downward trend for Inner Mongolia. (2) The CWSI of every 8d during one year in Inner Mongolia showed the double-peak trend, reaching its maximum of 0.9043 in the 121st day. In addition, the average CWSI of every 8d was 0.6749. (3) In Inner Mongolia, the average CWSI of different land-use types showed little difference and ranged from small to large: woodland (0.5954) < cropland (0.7733) < built-up land (0.8126) < grassland (0.8147) < unused land (0.8392). (4) The average correlation coefficients between CWSI and precipitation, temperature respectively were −0.53 and 0.18, which indicated that CWSI was highly correlated with precipitation in Inner Mongolia.

Suggested Citation

  • Zi-Ce Ma & Peng Sun & Qiang Zhang & Yu-Qian Hu & Wei Jiang, 2021. "Characterization and Evaluation of MODIS-Derived Crop Water Stress Index (CWSI) for Monitoring Drought from 2001 to 2017 over Inner Mongolia," Sustainability, MDPI, vol. 13(2), pages 1-17, January.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:2:p:916-:d:482203
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    References listed on IDEAS

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    1. Manjula Ranagalage & Ronald C. Estoque & Xinmin Zhang & Yuji Murayama, 2018. "Spatial Changes of Urban Heat Island Formation in the Colombo District, Sri Lanka: Implications for Sustainability Planning," Sustainability, MDPI, vol. 10(5), pages 1-21, April.
    2. Samaneh Zormand & Reza Jafari & Saeed Soltani Koupaei, 2017. "Assessment of PDI, MPDI and TVDI drought indices derived from MODIS Aqua/Terra Level 1B data in natural lands," 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. 86(2), pages 757-777, March.
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