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生态学杂志 ›› 2001, Vol. ›› Issue (1): 5-8.

• 研究报告 • 上一篇    下一篇

鼎湖山人工松林生态系统蒸散力及计算方法的比较

闫俊华, 周国逸, 陈忠毅   

  1. 中国科学院华南植物研究所, 广州510650
  • 收稿日期:1999-08-06 修回日期:2000-08-05 出版日期:2001-02-10
  • 基金资助:
    中国科学院生物技术特别支持国家基金(39700112、39630240);广东省基金(960468)资助项目;中国科学院“九五”特别支持

Popential Evapotranspiration of Artificial Pinus Forest in Mount Dinghu and the Comparison of Calculation Methods.

Yan Junhua, Zhou Guoyi, Chen Zhongyi   

  1. South China Institute of Botany, Academia Sinica, Guangzhou 510650
  • Received:1999-08-06 Revised:2000-08-05 Online:2001-02-10

关键词: 种植模式优化, 南方地区, 防旱避灾, 降水年型

Abstract: Based on the consecutive measurement (1995-1997) of meteorology and microclimate of artificial Pinus forest in Mount Dinghu, we calculated the potential evapotranspiration by using four different methods to discuss the method which is fit for forest ecosystem. The results are given as follows.1) In terms of the enviromental conditions of forest ecosystem, we redefined some parameters in Penman equation and used it to calculate the potential evapotranspiration of artificial Pinus forest ecosystem in Mount Dinghu.Preliminary result is that Penman equation is worth spreading for calculating the potential evapotranspiration of forest ecosystem,compared with several other methods.2) The annual average potential evapotranspiration of the artificial Pinus forest in Mount Dinghu is 937.55 mm,according to Penman equation. It is 50% of the rainfall in the corresponding period. The highest mean monthly potential evapotranspiration is July and the lowest mean monthly potential evapotranspiration is January. This is completely consistent with the variations of temperature.

Key words: optimized cropping system, southern China, preventing and avoiding drought disaster, precipitation year type.

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