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Spatial and Temporal Variations of Climate Resources during the Growing Season of Early-Season Rice in Hunan Province

Author

Listed:
  • Aibin He

    (State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, China
    National Innovation Center of Saline-Alkali Tolerant Rice in Sanya, Sanya 572000, China
    These authors contributed equally to this work.)

  • Jiebing Li

    (Hunan Biological and Electromechanical Polytechnic, Changsha 410127, China
    These authors contributed equally to this work.)

  • Jirui Long

    (State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, China)

  • Zhiyong Ai

    (State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, China
    National Innovation Center of Saline-Alkali Tolerant Rice in Sanya, Sanya 572000, China)

  • Peiguang Zhang

    (Academy for Advanced Interdisciplinary Studies, Northeast Normal University, Changchun 130024, China)

  • Xiayu Guo

    (State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, China
    National Innovation Center of Saline-Alkali Tolerant Rice in Sanya, Sanya 572000, China)

Abstract

The rising temperatures and changes in precipitation due to climate change have significantly impacted agricultural production. Evaluating the effects of climate change on rice production is crucial for improving rice cultivation techniques and ensuring food security. It is essential to comprehensively examine the climatic, spatial, and temporal variations during the duration of crop production. Previous research has mainly focused on different rice planting areas, rice types, and various growth stages of rice. However, more research is needed on the climatic changes during the crop-growing season in specific regions. Therefore, this study compiled complete daily meteorological data from 37 meteorological stations in Hunan Province from 1961 to 2020. The period from 1961 to 2020 was divided into three segments: 1961–1980 (a), 1981–2000 (b), and 2001–2020 (c), to analyze the characteristics of agricultural climate resource changes during different growth stages of early-season rice in Hunan Province. Results show that the heat resources were significantly increased (accumulated temperature growth rate of 43.36 °C/10a), the sunshine resources were decreased by −14.60 h/10a, and the precipitation resources were slightly increased by 6.85 mm/10a. The increase in heat resources mainly occurs during the vegetative growth stage of early-season rice. Additionally, the high-value regions of heat resources and precipitation in period c are 97.8% and 34.2% higher than the average values of periods a and b, respectively. In contrast, the regions with high sunshine hours significantly decreased in period c compared to periods a and b. In summary, the heat, sunshine, and water resources in the central and eastern regions of Hunan Province increase simultaneously, and appropriate cultivation measures should be adopted in the future to improve the yield and resource utilization efficiency of early-season rice in a double-cropping system.

Suggested Citation

  • Aibin He & Jiebing Li & Jirui Long & Zhiyong Ai & Peiguang Zhang & Xiayu Guo, 2024. "Spatial and Temporal Variations of Climate Resources during the Growing Season of Early-Season Rice in Hunan Province," Agriculture, MDPI, vol. 14(9), pages 1-15, September.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:9:p:1514-:d:1470514
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    References listed on IDEAS

    as
    1. Hui Ju & Marijn Velde & Erda Lin & Wei Xiong & Yingchun Li, 2013. "The impacts of climate change on agricultural production systems in China," Climatic Change, Springer, vol. 120(1), pages 313-324, September.
    2. Nanyan Deng & Patricio Grassini & Haishun Yang & Jianliang Huang & Kenneth G. Cassman & Shaobing Peng, 2019. "Closing yield gaps for rice self-sufficiency in China," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
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