天山北坡植被生长季气候因子变化特点  

Changing Regularities of Climate Factors in the Northern Slope of Tianshan Mountains during Growing Seasons

作　　者：李玉波[1] 李晓东[1] 谢国辉[2] 

机构地区：[1]白城师范学院,白城137000 [2]国家卫星气象中心乌鲁木齐卫星地面站

出　　处：《东北林业大学学报》2010年第2期16-19,共4页Journal of Northeast Forestry University

基　　金：科技部科研院所社会公益研究专项(2005DIB3J100)

摘　　要：依据中国天山北坡研究区5个气象台站1990—2004年的气温及降水资料,建立研究区域的平均气温、降水量序列,利用滑动平均、线性回归等方法,分析天山研究区近15a来气候变化的基本特征。结果表明:1990—1999年的10a间生长季气温变化趋势为0.081℃/a;1990—2004年的15a间生长季气温变化趋势为0.04℃/a。研究区域2000—2004年生长季节气温变化总体特点有别于1991—1999年前10a的变化特点,通过了显著性检验。天山北坡2000—2004年的月均温特点:近5a的生长季节气温变化趋势性质为-0.26℃/a的负方向变化。1990—1999年的10a生长季降水变化趋势为6.968mm/a;1990—2004年的15a生长季降水变化趋势为1.483mm/a;2000—2004年的生长季降水变化趋势为-4.21mm/a。总体上来看,天山北坡2000—2004年生长季节的降水量变化趋势性质为正方向变化。但是相比较15a来降水的变化特点,2000—2004年的生长季降水是偏少的。Sequences of average air temperature and precipitation were obtained by means of the air temperature and precipitation data during the period 1990-2004 from 5 meteorological stations in the northern slope of Tianshan Mountains.The changing regularities of climate factors in recent 15 years were analysed by the methods of moving average and linear regression.The air temperature during 1990-1999 showed an increase of 0.081 degrees C per year during growing seasons,and air temperature during 1990-2004 exhibited an increase of 0.04 degrees C per year.The overall characteristics of the air temperature change during 2000-2004 were significantly different from those during 1991-1999.Air temperature during 2000-2004 exhibited a decrease of 0.26 degrees C per year during growing seasons.The changing tendency of precipitation during the periods 1990-1999 and 1990-2004 showed an increase of 6.968mm and 1.483mm per year,respectively,while that during 2000-2004 exhibited a decrease of 4.21mm per year.As a whole,precipitation during growing seasons in the northern slope of Tianshan Mountains during 2000-2004 shows an increasing tendency,but it is still lower compared with the change of precipitation during 1990-2004.

关 键 词：天山北坡 平均气温 降水量 气候变化 

分 类 号：S161[农业科学—农业气象学]