Vol.35, NO.4, 2024
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Article Navigation >  Journal of Applied Meteorological Science  > 2024  >  35(4): 444-455
Sun Guanghui, Duan Juqi, Li Junru, et al. Agro-climatic zoning of oiltea camellia in China based on climate-land integrated impacts. J Appl Meteor Sci, 2024, 35(4): 444-455. DOI:  10.11898/1001-7313.20240405.
Citation: Sun Guanghui, Duan Juqi, Li Junru, et al. Agro-climatic zoning of oiltea camellia in China based on climate-land integrated impacts. J Appl Meteor Sci, 2024, 35(4): 444-455. DOI:  10.11898/1001-7313.20240405.
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Agro-climatic Zoning of Oiltea Camellia in China Based on Climate-land Integrated Impacts

DOI: 10.11898/1001-7313.20240405
  • 1.

    CMA Key Open Laboratory of Transforming Climate Resources to Economy, Chongqing 401147

  • 2.

    Chongqing Meteorological Service Center, Chongqing 401147

  • 3.

    National Climate Center, Beijing 100081

  • 4.

    The Hong Kong University of Science and Technology, Hong Kong 999077

  • Received Date: 2024-03-14
  • Rev Recd Date: 2024-06-18
  • Publish Date: 2024-07-31
    Abstract
  • In recent years, China has accelerated the development of oiltea camellia industry and promoted the expansion of oiltea camellia cultivation nationwide, necessitating a refined agricultural climate zoning for oiltea camellia cultivation across the country. Considering soil factors is crucial for enhancing the precision of agricultural climate zoning for oiltea camellia. Therefore, based on the selection of potential climate factors affecting oiltea camellia cultivation distribution, as well as land conditions such as slope and soil thickness, dominant climate factors are analyzed using maximum entropy (MaxEnt) model and ArcGIS technology. It provides a refined climate zoning of oiltea camellia cultivation in China based on the joint effect of climate and land, identifying the potential for expansion and offering a scientific basis for the planning and implementation of oiltea camellia expansion. Results indicate the dominant climate factors affecting oiltea camellia cultivation distribution in China are the average temperature in January, accumulated temperature above or equal to 10 ℃, consecutive days with minimum temperature equal to or below -10 ℃, and annual cumulative precipitation. Taking into account the impact of slope and soil thickness on climatic suitability analysis, the climate zoning for oiltea camellia is divided into four suitability levels: The most suitable, more suitable, suitable region, and unsuitable region. The area for the most suitable region is 3.003×107 hm2, more suitable region is 2.858×107 hm2, and suitable region is 1.458×107 hm2.The precision of regional climate zoning for oiltea camellia cultivation is enhanced, reducing the suitable planting area for oiltea camellia by two-thirds compared to those not considering land factors. Suitable cultivation areas for oiltea camellia in China are in the region south of Yangtze River, especially from Sichuan Basins to the Qinling Mountains to the south of Huai River, and the east of Yungui Plateau to the coastal areas. Compared to the current planting area and range, oiltea camellia in China has significant potential for expansion. The potential planting boundaries, considering the joint effect of climate and land, tend to be further north. It suggests significant potential for expansion in the distribution of oiltea camellia in China. Therefore, when planning the layout of oiltea camellia cultivation, in addition to considering major planting areas such as Hunan, Jiangxi, Guangxi and Hubei, provinces with significant expansion potential such as Yunnan, Sichuan, Guangdong and Chongqing should also be taken into account, and their planting areas should be appropriately increased.
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  • Fig. 1  Meteorological observation stations and oiltea camellia cultivation sites in target area(a) and distributions of slope(b), soil thickness(c)

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    Fig. 2  Contribution of potential climate factors to oiltea camellia cultivation distribution

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    Fig. 3  ROC curve of suitability for oiltea camellia

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    Fig. 4  Oiltea camellia cultivation boundaries in China

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    Fig. 5  Climatic suitability of oiltea camellia cultivation

    (a)climatic suitability of oiltea camellia cultivation in China under effects of climate, (b)climatic suitability of oiltea camellia cultivation in China under combined effects of climate and soil

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    Fig. 6  Target cultivation area and suitable cultivation area in main cultivation provinces

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    Table  1  Potential factors affecting distribution of oiltea camellia cultivation

    环境条件 类型 潜在因子 文献出处
    气候条件 热量 年平均气温/℃ [3-4, 14-18]
    1月平均气温/℃ [3-4, 18, 28-30]
    7月平均气温/℃ [3-4, 18, 28-30]
    大于等于10℃活动积温/(℃·d) [3-4, 10, 15, 18, 30]
    日最低气温小于等于-10℃日数/d [3, 30]
    日最高气温大于等于40℃日数/d [3, 30]
    水分 年降水量/mm [3-4, 14, 26]
    年降水日数/d [4, 30]
    年平均相对湿度/% [3-4, 14]
    光照 年日照日数/d [3-4, 11]
    年日照累积时数/h [3-4, 11-14]
    土地条件 地形 坡度/(°) [16-18]
    土壤 土壤厚度/cm [17, 24-26]
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    Table  2  Percent contribution and permutation importance of potential climate factors

    气候因子 贡献率/% 置换重要性/%
    年降水量 60.9 2.6
    日最低气温小于等于-10 ℃日数 14.1 0.7
    年日照累时数 6.5 5.0
    大于等于10 ℃活动积温 4.5 16.3
    年降水日数 3.9 46.1
    年日照日数 3.7 7.8
    年平均气温 2.1 2.0
    7月平均气温 1.6 3.7
    年平均相对湿度 1.2 5.1
    日最高气温大于等于40 ℃日数 1.0 0.8
    1月平均气温 0.7 9.8
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    Table  3  Thresholds of dominant climate factors in different grades of suitable areas for oiltea camellia cultivation

    主导气候因子 最适宜区 次适宜区 适宜区 不适宜区
    1月平均气温/℃ [5, 12] [4, 15] [2, 17] (-40，2)
    大于等于10 ℃活动积温/(℃·d) [5400, 8000) [4200, 5400) [2800, 4200) (0, 2800)
    最低温度小于等于-10 ℃日数/d [0, 2) [2, 5) [5, 10) [10, 200)
    年降水量/mm [1300, 1900) [1100, 2100) [800, 1100) [0, 800)
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    • Received : 2024-03-14
    • Accepted : 2024-06-18
    • Published : 2024-07-31
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