DocumentCode :
3050126
Title :
The ecophysiological response of three shrub species to flooding
Author :
Chen, Fangqing ; Xie, Zongqiang
Author_Institution :
Eng. Res. Center of the Three Gorges, China Three Gorges Univ., Yichang, China
Volume :
2
fYear :
2011
fDate :
9-11 Dec. 2011
Firstpage :
624
Lastpage :
627
Abstract :
It is important to understand the ecophysiological adaptation of plants to flooding stress for selecting pioneer species to restore riparian vegetation. Three shrub species distributing in the Three Gorges Reservoir area, including Myricaria laxiflora, Salix variegata and Buxus ichangensis, were studied by simulating flooding, and their ecophysiological responses were uncovered. The results showed that M. laxiflora had the strongest adaptation to flooding, S. variegata and B. ichangensis ranked the second and the third respectively. Short time flooding resulted in continue decline of physiological activity in photosynthesis and transpiration. However, physiological activity of plants would gradually become stable and maintain at a certain level to keep their life. Flooding also caused the decrease of leaf chlorophyll and carotenoid contents, but the chlorophyll a/b ratio rises to improve the photosynthetic efficiency. The three shrub species also changed in morphological characteristics and life history to adapt flooding in an integrated mechanism. M. laxiflora became rest during flooding season meanwhile S. variegata and B. ichangensis developed adventitious roots to increase oxygen supply.
Keywords :
ecology; floods; physiology; Short time flooding; Three Gorges Reservoir area; ecophysiological response; photosynthetic efficiency; physiological activity; riparian vegetation; three shrub species; Floods; Physiology; Pigments; Reservoirs; Soil; Vegetation; Water conservation; Three Gorges Reservoir area; ecophysiological adaptation; flooding; riparian banks; shrubs species;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
IT in Medicine and Education (ITME), 2011 International Symposium on
Conference_Location :
Cuangzhou
Print_ISBN :
978-1-61284-701-6
Type :
conf
DOI :
10.1109/ITiME.2011.6132188
Filename :
6132188
Link To Document :
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