摘要
应用距平及差积曲线分析和坎德尔(Kendall)秩次相关检验表明,和田绿洲气温存在着递增趋势,处于变暖期;受气温影响,蒸发能力、空气湿度也呈增加趋势,但不显著;降水年际变化较大,年内分配趋于集中,有降水异常现象出现;由于人类活动,河流径流减少十分显著。
The methods of deviation and accumulated difference and the Kendall's rank verification were used to analyze the observed data of temperature and river runoff in the Hotan oasis in the second half of last century. It showed that the annual average temperature had a claer and gradual trend of increasing, which means it fell into a warming period. The evaporation changed in accordance with temperature. The rainfall varied dramatically from year to year and it distributed concentratively within one year. Some unusual rainfall events happened.The atmosphere humidity changed little, because water vapor would diffuse rapidly to the desert around.The river runoff had a distinct trend of decreasing due to human activity, such as water diversion for irrigation.
出处
《水利学报》
EI
CSCD
北大核心
2003年第5期78-83,共6页
Journal of Hydraulic Engineering
关键词
和田河流域
气温
湿度
蒸发
降水
径流
Hotan oasis,temperature
evaporation
humidity
rain fall
river runoff
