摘要
根据元江和勐腊两地区1957—2018年的气候数据资料,采用线性趋势估计、累积距平法、Mann-Kendall突变检验法和小波分析法等方法,分析这两个区域气候和干、湿季变化趋势,探讨元江和勐腊地区气候因子的突变情况及变化周期。结果表明:(1)1957—2018年以来,干热河谷元江地区和热带雨林勐腊地区气温变化与西南地区气温变化存在显著差异;(2)两地区年均温、日照、降水量均呈显著上升趋势,相对湿度相对下降,两区域间气候变化与全球变暖趋势相对一致。干热河谷地区干湿季变化中气温变化趋势强于雨林地区,降水变化趋势低于雨林地区;(3)两地区气温突变时间为2007、1985年,降水出现多次变化的趋势。元江地区气温和降水变化主周期相同,为28 a周期变化,存在同步性,勐腊地区气温和降水变化主周期存在差异,分别为28 a和6 a。
Based on the climate data of Yuanjiang and Mengla from 1957 to 2018,the change trend of climate and dry and wet seasons in these two regions were analyzed by using linear trend estimation,cumulative anomaly method,Mann Kendall mutation test method and wavelet analysis method,and the mutation situation and change cycle of meteorological factors in Yuanjiang and Mengla were also discussed.The results showed that:(1)From 1957 to 2018,there were significant differences between the temperature changes in Yuanjiang area and Mengla area of tropical rain forest in dry hot valley and that in Southwest China;(2)The annual average temperature,sunshine and precipitation of the two regions showed a significant upward trend,while the relative humidity decreased.The climate change between the two regions was relatively consistent with the trend of global warming.In the dry and hot valley,the change trend of temperature is stronger than that of rain forest,and the change trend of precipitation is lower than that of rain forest;(3)The abrupt changes of temperature occurred in 2007 and 1985,and the precipitation showed a trend of multiple changes.The main cycle of temperature and precipitation in Yuanjiang area is the same,which is 28 years,and there is synchronization.The main cycle of temperature and precipitation in Mengla area is different,which is 28 years and 6 years respectively.
作者
王妍方
李仕杰
罗琪
杨巧
朱润军
杨畅宇
程希平
WANG Yan-fan;LI Shi-jie;LUO Qi;YANG Qiao;ZHU Run-jun;YANG Chang-yu;CHEN Xi-ping(School of Geography and Ecotourism,Southwest Forestry University,Kunming Yunnan 650224,P.R.China;Department of Geography,Yunnan Normal University,Kunming Yunnan 650224,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2021年第2期145-153,共9页
Journal of West China Forestry Science
基金
国家自然科学基金项目(31860206)
云南省教育厅科学研究基金(2017ZZX220)。
关键词
气候
干热河谷
热带雨林
小波分析
climate
dry-hot valley
tropical rainforest
wavelet analysis
