1950-2000年中国北方干旱气候变化
  • 【摘要】

    Based on China's monthly precipitation data of 629 stations during 1950-2000, we calculated Z indices and separated them into seven Dryness and Wemess grades. Further, a drought area index was propose... 展开>>Based on China's monthly precipitation data of 629 stations during 1950-2000, we calculated Z indices and separated them into seven Dryness and Wemess grades. Further, a drought area index was proposed to study changes in drought severity in northern China. The results revealed that the different severity of droughts all showed expanding trends in northern China's main agricultural area. Moreover, the area coverage of droughts in different seasons and different regions displayed different trends. 收起<<

  • 【作者】

    王志伟  翟盘茂  张洪涛 

  • 【作者单位】

    Shanxi Agricultural Meteorology Center/National Climate Center

  • 【刊期】

    地理学报(英文版) ISTIC SCI 2003年4期

  • 【关键词】

    northern China  drought coverage  trend 

  • 【基金项目】

    The Project of the Ministry of Science and Technology National Meteorological Center