自然资源学报 ›› 1998, Vol. 13 ›› Issue (1): 40-45.doi: 10.11849/zrzyxb.1998.01.007

• 论文 • 上一篇    下一篇

西双版纳地区露水资源分析

刘文杰, 李红梅, 段文平   

  1. 中国科学院西双版纳热带植物园森林生态站
  • 收稿日期:1997-04-07 修回日期:1997-07-14 出版日期:1998-03-25 发布日期:1998-03-25
  • 作者简介:刘文杰,男,1969年生,助理研究员。1991年毕业于云南大学地球物理系气象专业。现主要从事热带森林 系统水文、气象方面的研究工作,已发表论文7篇。

AN ANALYSIS OF THE DEW RESOURCE IN THE XISHUANGBANNA AREA

LIU Wenjie, LI Hongmei, DUAN Wenping   

  1. Forest Ecosystem Station of Xishuangbanna Tropical Botanic Garden,Chinese Academy of Sciences,Menglun,Yunnan 666303
  • Received:1997-04-07 Revised:1997-07-14 Online:1998-03-25 Published:1998-03-25

摘要: 研究了西双版纳地区露的时空分布特征、形成机制及其与雾和逆温的关系,同时分析了露的农业气候意义。结果表明,西双版纳地区露日数呈干季较多、雨季较少的分布特征;干季的露水对本地区热带植物的生长具有重要的生态意义,可部分缓解干季降雨的不足,避免或减弱冷冻害的发生。

关键词: 露水资源, 农业气候分析, 西双版纳

Abstract: In this paper,the characteristics of the spatial and temporal distribution of dew the formation mechanism of dew and the relation of dew to fog and inversion in the Xishuangbanna area are studied. In the meantime the agroclimatic significance of dew is analyzed. The results indicate that the annual dew day in the Xishuangbanna area may reach about 300 d and the maximum number of dew day in some year exceeds 340 d. The number of dew day assumes such a characteristic,namely,it is greater in dry season fromNov. to May than in rainy season from Jun. to Oct. The formation of dew in the area is mostly in the nightfall. At this time the radiation of the ground surface is strong and the temperature of the ground vegetation is lower than the dew point temperature of the air which it contacts. Thus the water vapour condenses into dew. The formation of dew not only weakens the inversion intensity near the ground but also partly reduces the formation possibility of the radiation fog. The occurrence of dew in the dry season is of great ecological importance to the growth of tropical plants in the area. It may partly miligate the rainfall insufficiency in the dry season,thus avoiding or weakening the occurrence of frostbite.

Key words: dew resource, agroclimatic analysis, Xishuangbanna