Discrepancy Analysis of the Climate Changes among Mountain,Plain,Oasis and Desert in an Inland River Basin in the Northern Slopes of the Tianshan Mountains-A Case Study in the Sangong River Basin
Discrepancy Analysis of the Climate Changes among Mountain,Plain,Oasis and Desert in an Inland River Basin in the Northern Slopes of the Tianshan Mountains-A Case Study in the Sangong River Basin
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发表时间：
2009
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通讯作者：
Li Hui-min
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作者：
Li Hui-min
本文对天山北坡山地-绿洲-荒漠不同下垫面1961—2007年的气象资料进行了分析。结果表明,近50年来,三工河流域平原平均气温每10年上升0.30℃;山区平均气温每10年升高0.17℃，低于平原地区。本世纪初平均气温升高速度较快，绿洲和山区分别升高0.7℃和0.5℃。该地区二氧化碳和甲烷浓度的增长速度更快，且高于全球平均水平。 1987-2007年三工河流域平原降水量比1961-1986年增加35%；三工河流域山区十年间降水量增幅与绿洲区基本持平，但波动较大。 20世纪80年代显着上升，1990年代下降至1970年代水平。平原地区1983年降水量由低到高突变,1995年气温由低到高突变,达到Mann-Kendall平均值突变检验的水平。沙漠的太阳辐射和相对湿度始终低于绿洲，但沙漠的温度却高于绿洲。兼具湿岛效应和冷岛效应的绿洲。小波分析表明，沙漠和绿洲的温差以3小时和20小时为周期波动，且突变均发生在早晨。
In this paper,the meteorological data during 1961-2007 of different underlying surfaces on mountain-oasis-desert in the north slopes of Tianshan Mountains are analyzed. Results show that,during the approximate fifty years,the mean temperature increased 0.30 ℃ per ten years in plain of Sangong River basin; the warming rate of mean temperature inereased 0.17 ℃ per ten years in mountain area,which is lower than that in plain area. The warming rate of mean temperature speeds rapidly at the beginning of this century,with an increase of 0.7 ℃ and 0.5 ℃ in oasis and mountain areas,respectively. Concentrations of CO2 and CH4 in the area are increasing more rapidly and higher than the average over the globe. The precipitation in plain of Sangong River basin from 1987 to 2007 increased 35% as compared with that from 1961 to 1986; The increasing rate of precipitation per ten years in mountain area of Sangong River basin basically remained the same as in oasis area,but had a sharp undulation. It increased pronouncedly in the 1980s,and then decreased in the 1990s down to the level of the 1970s. In plain area,precipitation had an abrupt change in 1983 from low to high,and temperature had an abrupt change in 1995 from low to high,reaching the level derived from the abrupt test of Mann-Kendall means. The solar radiation and relative humidity in desert is always lower than that in oasis,but the temperature in desert is higher than that in oasis. Oasis characterized by both wet Island effect and cold island effect. According to wavelet analysis,the temperature differences in desert and oasis fluctuate with periods of three hours and 20 hours,and the abrupt change occurred always at the morning.