摘要
利用统计分析方法,对张家口1960-2006年的气温、降水量、径流深和地下水埋深等变化趋势进行分析。结果表明:1960年以来,张家口年平均气温呈整体上升趋势,并且以0.4℃/10 a的速率上升;气温升高主要在冬季,以0.68℃/10 a的速率上升。降水量的直线变化趋势不明显,但夏季和年降水量距平表现出明显的阶段性特点,1966-1979年和1990-1996年为降水相对较多期,1980-1989年和1997-2006年降水相对较少;降水的阶段性变化特点使清水河也表现出基本相同的丰枯特点,只是时间上略有滞后;当地气候变化特点以及过度开采也造成了地下水的持续下降。因此,应对气候变化要合理调整农业结构,科学利用水资源,保护生态环境。
Based on the data in 1996 - 2006 in Zhangjiakou region, the change trends of the temperature, precipitation, runoff depth and burying depth of the ground water were statistically analyzed. The results indicated that the annual mean temperature in Zhangjiakou showed an increased trend by the rate of 0.4℃ per ten years since 1960. The temperature increased mainly in winter by the rate of 0.68℃ per ten years. The linear variation tendency of the precipitation was not obvious, but the departure of the yearly precipitation and the precipitation in summer showed an obvious periodic characteristic. The periods during 1966 - 1979 and 1990 - 1996 were with relative more precipitation, and during 1980 - 1989 and 1997 -2006 with less precipitation. The periodic change of the precipitation led to a same change trend with the streamflow abundant or dry up in Qingshui River, but only with time lag slightly. The climate change and overexploitation of the ground water caused the continuous drawdown of the ground water. Therefore, responding to the climate change required the reasonable adjustment of agriculture structure, scientific utilization of water resources and protection of the ecological environment.
出处
《中国农业气象》
CSCD
2008年第3期277-280,共4页
Chinese Journal of Agrometeorology
基金
河北省气象局“张家口错季蔬菜节水灌溉生产调控技术研究”
关键词
气候变化
水资源
影响
Climate change
Water resources
Impact
