水土保持通报2012，Vol.32Issue(5)：205-209,5.
近51a来额济纳旗绿洲胡杨年生长期对气候变化的响应
Response of Populus Euphratica's Annual Growth Period to Climate Change in Ejina Banner's Oasis over the Last 51 Years
摘要
Abstract
Based on the average daily temperature, average daily maximum and minimum temperature data from the weather stations of Ejina Banner in the oasis of Ejina Banner in the 1960-2010s, the methods like s climate trending rate and correlation analysis were used to analyze the varying characteristics of beginning and ending dates of annual growth period, day number of growth period, and beginning dates of leaf expansion and yellow leaf stage for the Populus euphratica, as well as its response to climate change. Results showed that in the recent 51 years, the beginning date of annual growth was becoming earlier, but the ending date was becoming later; the annual growth period was prolonged; and the beginning date of leaf unfolding was becoming earlier and the beginning date of yellow leaf stage, slightly later. Correlation analysis shows that the beginning date of annual growth was greatly influenced by the average temperature in March and the ending date, by the average temperature in October. There was a significantly positive correlation between the growth period and the average temperature from March to November. The average temperature in April had a significant influence on the beginning date of leaf unfolding, and the correlation between them was negative with a correlation coefficient as high as 0. 678 2(a=0. 001). The average temperature in September had a maximum influence on the beginning date of yellow leaf stage. The higher average temperature in September, the later the beginning date of yellow leaf stage was. Therefore, there was an obvious response of the Populus euphratica to climate change in the study area.关键词
额济纳旗/胡杨/年生长期/气候变化Key words
Ejina Banner/Populus euphratica/annual growth period/climate change分类
农业科技引用本文复制引用
赵敏丽,刘普幸,朱小娟,侯成成..近51a来额济纳旗绿洲胡杨年生长期对气候变化的响应[J].水土保持通报,2012,32(5):205-209,5.基金项目
国家自然科学基金项目“河西绿洲天然胡杨林生长的水盐过程和衰退机制研究” （）
甘肃省自然基金项目“河西绿洲天然胡杨林生长的水盐过程和衰退机制研究” （）
