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生态学杂志 ›› 2005, Vol. ›› Issue (11): 1287-1290.

• 研究报告 • 上一篇    下一篇

羊草气孔导度的Jarvis-类模型

牛海山1, 旭日2, 张志诚3, 陈佐忠4   

  1. 1. 中国科学院研究生院, 北京100049;
    2. 中国科学院大气物理研究所, 北京100029;
    3. 中国科学院地理科学与资源研究所;
    4. 中国科学院植物研究所, 北京100093
  • 收稿日期:2004-12-22 修回日期:2005-04-06 出版日期:2005-11-10
  • 通讯作者: 牛海山,男,1973年生,博士,副教授.主要从事干旱评价、草原水文以及生态系统评价研究.E-mail:niuhs@gscas.ac.cn.
  • 基金资助:
    国家自然科学基金资助项目(40205015)

A Jarvis stomatal conductance model under considering soil moisture condition

NIU Haishan1, XU Ri2, ZHANG Zhicheng3, CHEN Zuozhong4   

  1. 1. Graduate School of Chinese Academy of Sciences, Beijing 100049, China;
    2. Institute of Atmosphere Physics, Chinese Academy of Sciences, Beijing 100029, China;
    3. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    4. Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
  • Received:2004-12-22 Revised:2005-04-06 Online:2005-11-10

摘要: 在干旱半干旱气候条件下,土壤水分状况通常是决定植物气孔导度的重要因素,现有气孔导度模型Jarvis-类和耦合模型(或光合-导度模型)未充分考虑这一因素对气孔导度的影响。本文以Jarvis气孔导度模型为基础,提出一个充分考虑土壤水分状况因素的气孔导度模型。该模型对羊草连续两年(1998~1999)野外实地观测结果拟合良好(R2=0.603),预测能力较线性回归方程(R2=0.361)有明显提高。

关键词: 人工阔叶红松林, 生产力, 植物多样性

Abstract: In arid and semi-arid area,soil moisture is a vital factor affecting plant stomatal conductance,but was ignored to some extent by most stomatal conductance models which were generally classified into two types,i.e.,Jarvis-type and photosynthesis-conductance type.This paper presented a new model,which adopted the main structure of Jarvis-type and fully considered the importance of soil moisture condition.The stomatal conductance of Leymus chinensis,a dominant species of the typical steppe in Inner-Mongolian grassland,was predicted by the model during two growth seasons(1998~1999),with a precision of R2=0.603,obviously higher than R2=0.361 obtained by regression equations.

Key words: Artificial broad-leaved Korean pine forest, Species diversity, Productivity

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