Eco-physiological responses of Phragmites australis to different water depth in Momoge Wetland
DENG Chun-nuan1,2,3, ZHANG Guang-xin2, PAN Xiang-liang3
1. Key Lab of Plateau Lake Ecology & Global Change, College of Tourism and Geographic Science, Yunnan Normal University, Kunming 650500, China; 2. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China; 3. Key Lab.of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
By investigating of the reed ecological characteristics in field,and measuring the chlorophyll content and the maximum photosynthesis efficiency,the influence mechanism of water depth on the eco-physiological responses of reed in Momoge Wetland was analyzed.The results showed that there was a strong positive correlation between water depth and indices including the plant height, biomass,chlorophyll content and maximum photosynthesis efficiency.Along with the increase of water depth,these indices increased. There was a negative correlation between the water depth and coverage of reed.Along with the increase of water depth,the coverage decreased.The maximum photosynthesis efficiency in June and July was better than that in August.In August,it decreased,suggesting that the photosynthesis was retarded.Our results suggested that June and July are the key time for the growth of reed,and the water requirement should be guaranteed.The water depth of 15 cm is the minimum ecological water depth.The water depth of 35-45 cm is the optimum ecological water depth which can guarantee the best growth of reed.
邓春暖1,2,3, 章光新2*, 潘响亮3. 莫莫格湿地芦苇生理生态特征对水深梯度的响应[J]. , 2012, 31(4): 352-356.
DENG Chun-nuan1,2,3, ZHANG Guang-xin2, PAN Xiang-liang3. Eco-physiological responses of Phragmites australis to different water depth in Momoge Wetland. , 2012, 31(4): 352-356.
[5] Cui B S,Yang Q C,Zhang K J,Zhao X S,You Z Y.Responses of saltcedar(Tamarix chinensis) to water table depth and soil salinity in the Yellow River Delta,China[J].Plant Ecology.2010,209(2):279-290.
[6] Wu Z G,Han X D,Wang L.Migratory Grusleucogeranus in Momoge nature reserve[J].Wildlife,1991,63(5):21-24.
[7] Zeng Z W,Cheng L,Li X M.The numerical distribution and conservation of Oritual white stork in China[J].Territory Nat.Resour.Study,2003,(1):71-72.
[8] Pan X,Zhang D,Liu Q.Interactive factors leading to dying-off Carex tato in Momoge wetland polluted by crude oil,Western Jilin,China[J].Chemosphere,2006,65:1772-1777.
