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Study on the Photosynthesis Characteristics of the Rare Species in Wulingyuan Area(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年13期
Page:
69-72
Research Field:
Publishing date:

Info

Title:
Study on the Photosynthesis Characteristics of the Rare Species in Wulingyuan Area
Author(s):
XIANG Jian-jun1; WANG Pei-lan2; ZHU Ning-hua2; XIANG Wu-fan1; OU Yang-zhao3; YU Geng-qing3
1.Management Office Badagongshan National Nature Reserve，Zhangjiajie，Hunan 427100；
2.School of Forestry,Central South University of Forestry and Technology,Changsha，Hunan 410004；
3.Fushoushan Stateowned Forest,Yueyang，Hunan 414000
Keywords:
Wulingyuan area; rare tree species; photosynthetic parameters; photosynthetic characteristics
PACS:
Q 945
DOI:
-
Abstract:
Taking Emmenopterys henry，Schima parviflora and Changiostyrax raxdolichocarpa?that transplanted to Zhangjiajie botanical garden as test material，by the dynamic monitoring of 4 photosynthetic characteristic parameters，photosynthetic characters of 3 different rare tree were studied and compared,in order to provide a theoretical basis for the protection of rare species.The results showed that there were obvious differences in three species，and Schima parviflora was the best.The diurnal changes curves of photosynthetic rate of three species were all taken on a double peak curve，and all had ‘noon break’.The former was higher than the last two.The PRA curves of net photosynthetic rate of all the three species were similar.It presented vertical line ascending in the range of PRA 0~200 μmol·m-2·s-1，then the maximum appears when PRA raise to 600~900 μmol·m-2·s-1.But there was significant differences in the Pn.Among them，Schima parviflora had a distinct advantage.

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Last Update: 2014-08-02