Position: Home > Articles > Schima superba stem CO_2 efflux and its relations to xylem sap flux density a nd xylem CO_2 concentration.
Chinese Journal of Ecology
2009,28
(11)
2227-2232
荷木树干CO_2释放通量与木质部液流和CO_2浓度的关系
作 者：
朱丽薇;赵平;蔡锡安;曾小平;邹绿柳
单 位：
中国科学院研究生院;中国科学院华南植物园
关键词：
树干CO2释放通量;树干温度;液流密度;木质部CO2浓度;Q10;荷木
摘 要：
采用红外气体分析仪,于2008年10月17—19日连续3个昼夜原位监测了荷木的树干CO2释放通量、树干温度、木质部液流密度和CO2浓度。结果表明:树干CO2释放通量(EA)日变化呈S形曲线,不同径级间差异显著。EA与树干温度呈显著幂函数关系(0.24
译 名：
Schima superba stem CO_2 efflux and its relations to xylem sap flux density a nd xylem CO_2 concentration.
作 者：
ZHU Li-wei1,2, ZHAO Ping1, CAI Xi-an1, ZENG Xiao-ping1, ZOU Lu-l iu1,2 (1South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; 2Graduate University of Chinese Academy of Sciences, Beijing 10003 9, China ).
关键词：
stem CO_2 efflux; stem temperature; xylem sap flux density; xylem CO 2 concentration; Q10; Schima superba.
摘 要：
By using a Li-820 infra-red CO_2 gas analyzer, an in situ measurement of Sc hima superba stem CO_2 efflux was conducted for three consecutive days from 1 7 to 19 October 2008. In the meantime, the stem temperature, xylem sap efflux dens it y, and xylem CO_2 concentration were measured. The stem CO_2 efflux had a diur na l variation of "S" pattern, and differed significantly with stem diameter. The re was a significant exponential relationship between stem CO_2 efflux and stem t emperature (0.24
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