Review on Spring Frost Disaster for Tea Plant in China

Wang Peijuan; Tang Junxian; Jin Zhifeng; Ma Yuping; Chen Hui

doi:10.11898/1001-7313.20210201

Vol.32, NO.2, 2021

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Article Navigation > Journal of Applied Meteorological Science > 2021 > 32(2): 129-145

Wang Peijuan, Tang Junxian, Jin Zhifeng, et al. Review on spring frost disaster for tea plant in China. J Appl Meteor Sci, 2021, 32(2): 129-145. DOI: 10.11898/1001-7313.20210201.

Citation:

Wang Peijuan, Tang Junxian, Jin Zhifeng, et al. Review on spring frost disaster for tea plant in China. J Appl Meteor Sci, 2021, 32(2): 129-145. DOI: 10.11898/1001-7313.20210201.

Wang Peijuan, Tang Junxian, Jin Zhifeng, et al. Review on spring frost disaster for tea plant in China. J Appl Meteor Sci, 2021, 32(2): 129-145. DOI: 10.11898/1001-7313.20210201.

Citation:

Wang Peijuan, Tang Junxian, Jin Zhifeng, et al. Review on spring frost disaster for tea plant in China. J Appl Meteor Sci, 2021, 32(2): 129-145. DOI: 10.11898/1001-7313.20210201.

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Review on Spring Frost Disaster for Tea Plant in China

DOI: 10.11898/1001-7313.20210201

1.
Chinese Academy of Meteorological Sciences, Beijing 100081
2.
Zhejiang Climate Center, Hangzhou 310017
3.
Fujian Institute of Meteorological Science, Fuzhou 350001

Received Date: 2020-08-08
Rev Recd Date: 2020-10-12
Publish Date: 2021-03-31

Abstract

Abstract

As a main economic crop in China, tea plant is prone to frost disaster when it germinates in early spring. The research progress and main achievements of tea plant spring frost disaster are systematically summarized. In southern Yangtze River, the research on disaster index and risk assessment of tea plant spring frost disaster is abundant. As for the spatio-temporal distribution characteristics of the disaster, most of the existing studies are based on regional scales and provincial scales, focusing on Southern Yangtze River. There are few reports on the spatio-temporal distribution on the national scale. Tea plant spring frost disaster index can be divided into three categories based on classification criteria. According to data acquisition method, it can be classified into morphological index and laboratory physiological morphological index. According to data category, it can be determined only by meteorological data, or by both meteorological data and tea plant disaster symptoms. According to the time scale of meteorological data, it can be further subdivided into daily scale and hourly scale. In the context of global warming, although the frequency of tea plant spring frost is declining, its harm cannot be ignored. The frequency of tea plant spring frost in Southern Yangtze River shows latitudinal distribution characteristic that gradually increases from south to north. And the topographic distribution characteristic is also revealed that the frequency of tea plant spring frost increases with elevated altitude. For the impact assessment of tea plant spring frost, the areas, including Jiangsu, Zhejiang, Anhui, and Jiangxi provinces, are paid close attention, and the research method is gradually developing from qualitative assessment to quantitative assessment. The risk assessment methods of tea plant spring frost mainly include fuzzy mathematics method and information diffusion method. In recently researches, risk levels are determined by models based on the natural disaster risk formation mechanism. In the future, the construction of tea spring frost disaster index based on the micro-climate factors in tea gardens will become hotspot. Furthermore, the meteorological index of tea spring frost should be improved, and the spatiotemporal distribution characteristics on national scale, and the refined risk assessment will also be paid more attention.
- spring frost disaster for tea plant;
- damage mechanism;
- disaster index;
- spatio-temporal distribution;
- impact and risk assessment

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References(131)

Figures and Tables

Table 1 Morphological index of spring frost disaster for tea plant

受害程度	叶片受冻比例/%	受害情况	霜冻等级
0级	[0, 5]	新芽叶无影响	无冻害
1级	(5, 15]	新芽尖或叶尖受冻变褐，略有损伤	轻度冻害
2级	(15, 25]	新芽叶受冻变褐占新梢面积1/2以下	中度冻害
3级	(25, 50]	新芽叶受冻变褐占新梢面积1/2~2/3	重度冻害
4级	(50, 100]	新芽叶受冻变褐占新梢面积2/3以上	特重冻害

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Table 2 The spring frost index determined by both daily minimum temperature and tea plant disaster symptoms

霜冻等级	日最低气温T_min/℃	受灾症状
轻度	2<T_min≤4	新芽叶尖或叶尖受冻变褐色面积占20%以下，嫩叶出现麻点、麻头、边缘变红、叶片呈黄褐色
中度	0<T_min≤2	新芽叶尖或叶尖受冻变褐色面积不低于20%且在50%以下，叶尖发红部位由叶缘延伸至叶片中部，茶芽无法开放，嫩叶失去光泽、芽叶焦灼、卷缩
重度	T_min≤0	新芽叶尖或叶尖受冻变褐色面积不低于50%，叶片卷缩干枯，遇风吹叶片便脱落

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Table 3 Meteorological disaster index of spring frost for tea plant at daily scale in Southern Yangtze River

霜冻等级	日最低气温T_min/℃	持续时间H/d
轻度	2<T_min≤4	1≤H<5
轻度	0<T_min≤2	1≤H<3
中度	2<T_min≤4	H≥5
中度	0<T_min≤2	3≤H<5
重度	0<T_min≤2	H≥5
重度	T_min≤0	H≥1

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Table 4 Meteorological disaster index of spring frost for tea plant at hourly scale in Southern Yangtze River

霜冻等级	小时最低气温T_h/℃	持续时间H/h
轻度	0≤T_h<2	2≤H<4
轻度	2≤T_h<4	H≥4
中度	-2≤T_h<0	H<4
中度	0≤T_h<2	H≥4
重度	-2≤T_h<0	H≥4
重度	T_h<-2	H<4
特重	T_h<-2	H≥4

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Table 5 Evaluation index of spring frost for tea plant in the south of Jiangsu Province

霜冻等级	评估指标I_frost
无冻害	0
轻度	(0, 0.3]
中度	(0.3, 0.5]
重度	(0.5, 0.75]
特重	(0.75, 1]

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