摘要
利用1959—2011年中国黑戈壁地区12个气象站年平均气温、年降水量、年平均地面风速、年大风日数和年沙尘暴日数资料,分析黑戈壁地区气候变化基本特征,并与荒漠化地区气候变化进行比较。结果表明:黑戈壁地区年平均气温增温速率为0.34℃/10 a,高于荒漠化地区(0.25℃/10 a);年降水量增长率为1.33 mm/10 a,略小于荒漠化地区(1.66 mm/10 a);年平均地面风速减小率为0.10 m·s-1/10 a,小于荒漠化地区(0.14 m·s-1/10 a);年大风日数减少率为1.83 d/10 a,远小于荒漠化地区(3.44 d/10 a);年沙尘暴日数减少率为1.83 d/10 a,比荒漠化地区1.77 d/10 a的减少率略大。Mann-Kendall突变检验表明,除年降水量外,其他因子只有一个突变点。不同气候因子的空间分布是不同的。
Based on the annual average temperature ,precipitation, average wind speed, the number of gale days and dust storm days from 1959 to 2011 at 12 meteorological stations of the Black Gobi desert region, the climatic change characteristics were analyzed by a climatic trend method and it was compared with that in the desertification region. The results indicate that the annual mean temperature increases and its rates are 0. 34 ℃ and 0. 25℃ per decade in the Black Gobi desert and desertification regions, so is the annual precipitation and its rates are 1.33 mm and 1.66 mm per decade respectively. The annual mean surface wind speed decreases in the Black Gobi desert re- gion with 0. 10 m·s-1 per decade and in the desertification region with 0. 14 m·s -1 per decade,so is the number of gale days in Black Gobi desert region with 1.83 days per decade and in the desertification region with 3.44 days per decade. The number of dust storm days decreases in Black Gobi desert region with 1.83 days per decade and in the desertitication region with 1.77 days per decade, respectively. There is only one abrupt change point for most climatic factors except annual precipitation according to a Mann-Kendall test method. The spatial distributions of various climatic factors are different.
出处
《气象与环境学报》
2014年第2期81-87,共7页
Journal of Meteorology and Environment
基金
中国林业科学研究院重大项目"中国黑戈壁区生态本底调查"(CAFYBB2011002)资助
关键词
荒漠化地区
气候趋势法
突变
Desertification region
Climate trend method
Abrupt change
