热带季节雨林优势树种叶片和冠层尺度二氧化碳交换特征

应用生态学报

热带季节雨林优势树种叶片和冠层尺度二氧化碳交换特征

宋清海^1,3;张一平¹;于贵瑞²;杨振^1,3;赵双菊^1,3;高举明^1,3;孙晓敏²

¹中国科学院西双版纳热带植物园热带雨林生态系统定位研究站, 云南勐腊 666303;²中国科学院地理科学与资源研究所, 北京 100101;³中国科学院研究生院, 北京 100039

收稿日期:2007-09-07 修回日期:1900-01-01 出版日期:2008-04-20 发布日期:2008-04-20

Characteristics of CO₂ exchange at leaf and canopy levels in tropical seasonal rain forest of Xishuangbanna.

SONG Qing-hai^1,3;ZHANG Yi-ping¹;YU Gui-rui²;YANG Zhen^1,3; ZHAO Shuang-ju^1,3;GAO Ju-ming^1,3; SUN Xiao-min²

¹Xishuangbanna Tropical Rainforest Ecosystem Station,
Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, Yunnan, China;²Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China；³Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Received:2007-09-07 Revised:1900-01-01 Online:2008-04-20 Published:2008-04-20

摘要/Abstract

摘要： 采用叶室法和涡度相关法分析了西双版纳热带季节雨林优势树种绒毛番龙眼和大叶白颜树冠层及其叶片在不同季节的CO₂交换量,并拟合得到主要特征值.结果表明：以叶室法测得的两树种冠层最大净光合速率(P_{max A})为雨季>雨季末>雾凉季>干热季，叶片暗呼吸速率(R_d)为雨季>雨季末>干热季>雾凉季；以涡度相关法得到的两树种冠层最大净光合速率(P_{max B})为雨季>雨季末>雾凉季>干热季，而冠层呼吸速率(R_e)则是雨季>干热季>雾凉季>雨季末.两种方法得到的不同季节植物冠层最大净光合速率相差0.9～2.0 μmol·m^-2·s^-1.

关键词: 外部形态, 北方拟黵乌贼, 角质颚, 西北太平洋

Abstract: By the methods of chamberbased and eddy covariance measurements, the CO₂ exchange of dominant tree species Pometia tomentosa and Gironniera subaequalis at leaf and canopy levels in the tropical seasonal rain forest of Xishuangbanna was measured in different seasons of 2004. The results showed that for the two tree species, the maximum net photosynthesis (P_{max A}) of canopy based on chamberbased measurement ranked in the order of rainy season (RS)> end of rainy season (ERS)>foggycool season (FS)>dryhot season (DS), and the dark respiration rate (R_d) of leaf was RS>ERS>DS>FS. The P_maxB based on eddy covariance measurement was in the same order as that based on chamberbased measurement, while the canopy respiration rate (R_e) was RS>DS>FS>ERS. The maximum net photosynthetic rate of canopy in different seasons measured by the two methods had a comparatively small difference, ranging from 0.9 to 2.0 μmol·m^-2·s^-1.

Key words: the Northwest Pacific Ocean, beak, Gonatopsis borealis, morphological growth characteristic

宋清海^1,3;张一平¹;于贵瑞²;杨振^1,3;赵双菊^1,3;高举明^1,3;孙晓敏². 热带季节雨林优势树种叶片和冠层尺度二氧化碳交换特征[J]. 应用生态学报.

SONG Qing-hai^1,3;ZHANG Yi-ping¹;YU Gui-rui²;YANG Zhen^1,3; ZHAO Shuang-ju^1,3;GAO Ju-ming^1,3; SUN Xiao-min² . Characteristics of CO₂ exchange at leaf and canopy levels in tropical seasonal rain forest of Xishuangbanna. [J]. Chinese Journal of Applied Ecology.

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