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生态学杂志 ›› 1991, Vol. ›› Issue (3): 18-21,71.

• 研究报告 • 上一篇    下一篇

半干旱区四种针叶林蒸腾作用的研究

杨文斌, 蒋士梅   

  1. 内蒙古林业科学研究院, 呼和浩特 010010
  • 收稿日期:1989-03-06 修回日期:1990-12-25 出版日期:1991-06-10

Study on Transpiration of Four Conifers in Semi-Arid Region

Yang Wenbin, Jiang Shimei   

  1. Inner Mongolian Academy of Forestry Sciences, Huhhot 010010
  • Received:1989-03-06 Revised:1990-12-25 Online:1991-06-10

关键词: 长江口, 大型水母, 渔业资源

Abstract: The diurnal and seasonal variations of transpiration rate'of four conifers are measured in relation to the variation of environmental factors. The daily course of transpiration rate follows the daily course of light intensity and its seasonal course peaks in July. The transpiration rate of new needles is greater than that of one or two years' needles. The water consumption during growing season is calculated as: Pinus sylyestris vat, mongolica 152.00 mm, P. tabulaeformis 169.05 mm and Picea crassifolia 181.42 mm, which respectively occupies 60%, 73% and 79% of precipitation at the same period.

Key words: Yangtze River estuary, macro-jellyfish, fishery resource