近50年中国温带地区不同景观带气温变化对比研究

摘要

运用线性趋势分析、气候倾向率分析和Mann-Kendall突变检验等方法对中国1962年-2011年温带地区不同景观带气温数据进行分析，研究温带地区不同景观带气温变化趋势以及气温突变状况，分析气温变化的异同。研究结果表明：近50年中国温带地区森林、草原、荒漠三个景观带的年平均气温、四季气温、年平均最高、最低气温都呈现显著增加的趋势，且均存在突变现象，虽然同属温带地区，但是气温增长速率及突变时间存在差异。温带草原带和温带森林带是气候变化的敏感区。%This study aimed to analyze the trends and abrupt changes of temperature in different landscapes of temperate zone, and reveal the similarities and differences of temperature changes, using linear trend analysis, the climatic trend rate analy-sis and Mann-Kendall methods to analyze the temperature data in different landscapes of temperate zone in China during 1962-2011. The results showed that:The annual mean temperature, the seasonal temperature, the annual mean highest and the lowest temperature in the three landscapes of temperate zone mainly displayed significant increasing trends in past 50 years. And they all had the abruptly changes. Although the three landscapes belonged to temperate regions, the increasing rates of temperature and the time of abruptly changes were different. Grassland zone and forest zone were the sensitive zone of climate change.