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- Title
中国橡胶树大风, 寒害的时空分布分析.
- Authors
佟金鹤; 张卫红; 刘少军; 李伟光; 陈小敏
- Abstract
In order to analyze the distribution and changes of Hevea brasiliensis’ gale damage and chilling injure in Fujian, Guangdong, Guangxi, Yunnan and Hainan Province, the meteorological elements such as temperature, sunshine duration and wind speed from 1984 to 2015 were used to calculate the disaster grade by relevant index and multivariate EOF analysis. The results showed that most of the study area except southern Hainan Island could be affected by chilling injure. The intensity and frequency of the Hevea brasiliensis, chilling injury in study were higher than that of gale damage. The chilling injure degree was mainly moderate and was less severe in eastern and southern coastal area in Hainan Island and Jinghong and Mengla in Yunnan Province, while the gale damage was mainly mild and mainly occurred in the southeast coast area and the mountainous areas of Yunnan. The gale damage had significant spatial diversity as the spatial difference of chilling injure was relatively low. MVEOF analysis of gale damage and chilling injure’s anomalies showed two significant modes, while the two disasters changed similarly in space in the first mode which was 41.53% variance contribution and the second mode had a variance contribution of 15.1% with a time coefficients always positive. The chilling injure was less severe in the south, and the gale damage was more severe in Leizhou Peninsula and the southeast coast in the second mode when compared with the first one by both anomalies distribution and time coefficients sequence. The change of MVEOF time coefficient showed that the first mode became unconspicuous and the second mode changed to be more representative which could come to the conclusion that the chilling injure was reduced and the gale damage increased in its high incidence zone during the study period.
- Subjects
YUNNAN Sheng (China); HAINAN Sheng (China); HEVEA; WIND speed; WINDSTORMS; MULTIVARIATE analysis; SUNSHINE
- Publication
Ecological Science, 2023, Vol 42, Issue 2, p43
- ISSN
1008-8873
- Publication type
Article
- DOI
10.14108/j.cnki.1008-8873.2023.02.006