主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2023, Vol. 39 ›› Issue (5): 99-105.doi: 10.3969/j.issn.1673-503X.2023.05.012

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Risk analysis and zoning of frost damage for spring tea in Guizhou province

Bo ZHANG1,2(),Sisi SUN1,2,Liguo DING3,Yan LIU4,Fei YU1,2,*()   

  1. 1. Guizhou Institute of Mountainous Environment and Climate, Guiyang 550002, China
    2. Guizhou Key laboratory of Mountainous Climate and Resources, Guiyang 550002, China
    3. Guizhou Climate Center, Guiyang 550002, China
    4. Guiyang University, Guiyang 550002, China
  • Received:2022-02-24 Online:2023-10-28 Published:2023-11-28
  • Contact: Fei YU E-mail:nj0622@126.com;66435101@qq.com

Abstract:

To reduce the economic losses and improve the ability of tea production to resist meteorological disasters, the risk analysis of frost damage during the spring tea growing season was carried out based on the daily minimum temperature data of 84 meteorological stations in Guizhou province from 1961 to 2020, and the frost damage risk index was constructed using the methods of mathematical statistics and spatial analysis.The results show that light frost damage is the main disaster of spring tea in Guizhou province.The number of days frost occurred and the station ratio of frost for each grade shows a decreasing trend.The frost damage risk level is high in the west and the north, becomes lower in the east and the south.The areas with sub-high risk are mainly distributed in the north of Liupanshui, the most of the west and the middle of Bijie, the part of the northern Guiyang, the part of the Daloushan in the north of Zunyi, Fanjing Mountain Area in the middle of Tongren, Leigong Mountain Area in the southeast of Guizhou province and Doupeng Mountain Area in Southern Guizhou province.The total area is about 3.7×104 km2, accounting for 21.7% of the entire area of Guizhou province.The lowest risk areas are mainly distributed in the Beipanjiang River Basin in the southwest Chishui River Basin in the north and Duliu River Basin in the southeast and the area is about 2.34×104 km2, accounting for 14.3% of the total area of Guizhou province.

Key words: Spring tea, Frost, Damage risk index, Risk zoning

CLC Number: