Li Lujun, CHE Ke-jun and Jiang Zhi-rong (2007) Studies on the Diurnal Variations of Net Photosynthesis Rate and the Effect of Environmental Factors on A. mongolicus

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Studies on the Diurnal Variations of Net Photosynthesis Rate and the Effect of Environmental Factors on A. mongolicus

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CONTRIBUTORS:

	Author:	Li Lujun (Institute of Applied Ecolgy, Chinese Academy of Sciences)
	Author:	CHE Ke-jun
	Author:	Jiang Zhi-rong

JOURNAL:

JOURNAL OF ARID LAND RESOURCES AND ENVIRONMENT, 21(5), ?? - ??.

YEAR:

2007

PUB TYPE:

Journal Article

SUBJECT(S):

None

DISCIPLINE:

No discipline assigned

HTTP:

http://www.wanfangdata.com.cn/qikan/periodical.articles/ghqzyyhj/ghqz2007/0705/070529.htm

LANGUAGE:

None

PUB ID:

103-443-474 (Last edited on 2008/06/18 07:36:56 GMT-6)

SPONSOR(S):

ABSTRACT:
Diurnal variations of photosynthesis of A. mongolicus were studied under natural conditions by Li-6200 photosynthesis analyzer. The results indicated that in the typical summer sunny days, the curve of diurnal variation of net photosynthetic rate (Pn) was dual-peaked. The peak values appeared at 11:00 and 15:00 respectively. The first peak value was 6.031µmolCO2•m^(-2)•s^(-1) and the second one was 5.296µmolCO2•m^(-2)•s^(-1). There was a clear depression at noon, which was 4.798µmolCO2•m^(-2)•s^(-1) appeared at 13:00. The analysis of correlation and stepwise multi-regression showed that the main ecological factors affecting photosynthetic diurnal variation of A. mongolicus were photo flux density and stomatal resistance.

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