地理科学 ›› 1994, Vol. 14 ›› Issue (1): 30-37.doi: 10.13249/j.cnki.sgs.1994.01.30

• 论文 • 上一篇    下一篇

中国亚热带西部山区夜雨特征的农业气候学研究

张养才, 叶一舫   

  1. 中国气象科学研究院, 北京100081
  • 收稿日期:1992-06-01 出版日期:1994-01-20 发布日期:1994-01-20
  • 基金资助:
    《亚热带西部山区农业气候资源及其合理利用》部门重点课题成果之一

AN AGROCLIMATIC STUDY ON NIGHT RAIN FEATURES IN MOUNTAINOUS REGIONS IN THE WESTERN PART OF SUBTROPICAL ZONE IN CHINA

Zhang Yangcai, Ye Yifang   

  1. Chinese Academy of Meteorological Science, Beijing 100081
  • Received:1992-06-01 Online:1994-01-20 Published:1994-01-20

摘要: 根据1989~1990年在亚热带西部山区不同坡向,高度统一布设的气象观测资料和统计分析,指出亚热带西部山区夜雨>日雨主要发生在山区中、下层,夜雨量偏多主要是雨时、雨强所致,日晴夜雨的现象仅在部分山区和个别海拔高度出现.夜雨资源将是亚热带西部山区抗御干旱对策的重要依据.

Abstract: This paper studies weather-climate features and laws of spatial and temporal distri-bution of night rains and advances the decrease or disappearance of topographic effect gradually with the rise of elevation and the night rainfall more than daytime rainfall in the middle-lower layers in mountainous regions. The more night rainfall is caused prin-cipally by both rainfall hours and rainfall density. The phenomenon of "clear in daytime and rain at night"appears in some mountains and altitudes. The night rain appears prin-cipally in growing seasons, especially in April to May of spring sowing and in July to August of autumn crop in the milk-filling and milk stage. According to the meteorologi-cal data(1989-1990) from stations in different sloping positions and altitudes above sea level. Monthly rainfall of both daytime and night and the rain days in mountainous re-gions in the western part of subtropical zone were counted. The night rain resources will become an important basis for preventing drought countermeasures in mountainous re-gions in the western part of subtropical zone.