Growth and physiology responses of Phragmites australis to combined drought-flooding condition in inland saline-alkaline marsh, Northeast China

	Growth and physiology responses of Phragmites australis to combined drought-flooding condition in inland saline-alkaline marsh, Northeast China; Growth and physiology responses of Phragmites australis to combined drought-flooding condition in inland saline-alkaline marsh, Northeast China
	B. L. Wen, X. Y. Li, F. Yang, X. R. Lu, X. J. Li and F. Y. Yang
刊名	Ecological Engineering ; Ecological Engineering
	2017 ; 2017
卷号	108 页码:234-239
中文摘要	As a special ecosystem in western Songnen Plain, Northeast China, Phragmites australis saline-alkaline marsh degrade to saline meadow or even alkaline spots progressively, due to the interruption of the water supply. It was the basis to restore the saline-alkaline marsh successfully, that understanding the responses of P. australis to flooding in dried saline-alkaline marsh. Pot experiments were conducted to explore an optimum flooding time for restoring inland saline-alkaline marshes by determining the changes in the growth and physiology of P. australis in response to five different combined drought-flooding treatments (DF04, DF13, DF22, DF31 and DF40). The results showed that the long-term flooding without drought condition (DF04) was not the most favorable condition for the largest effective accumulation of plants biomass, although it gave rise to the highest population height. The combined drought-flooding treatment that drought in one month and flooding in subsequent three months (DF13) was proved as the optimum flooding time, not only obtaining the largest biomass, but also effectively reducing the sodium ion absorbed by plant shoots. Subsequently, the accumulation of sodium ion in plant shoots increased significantly with the delay of flooding from DF22 to DF40 treatments, and the significant enhanced photosynthetic activity implied the evident physiological responses to drought stress.; As a special ecosystem in western Songnen Plain, Northeast China, Phragmites australis saline-alkaline marsh degrade to saline meadow or even alkaline spots progressively, due to the interruption of the water supply. It was the basis to restore the saline-alkaline marsh successfully, that understanding the responses of P. australis to flooding in dried saline-alkaline marsh. Pot experiments were conducted to explore an optimum flooding time for restoring inland saline-alkaline marshes by determining the changes in the growth and physiology of P. australis in response to five different combined drought-flooding treatments (DF04, DF13, DF22, DF31 and DF40). The results showed that the long-term flooding without drought condition (DF04) was not the most favorable condition for the largest effective accumulation of plants biomass, although it gave rise to the highest population height. The combined drought-flooding treatment that drought in one month and flooding in subsequent three months (DF13) was proved as the optimum flooding time, not only obtaining the largest biomass, but also effectively reducing the sodium ion absorbed by plant shoots. Subsequently, the accumulation of sodium ion in plant shoots increased significantly with the delay of flooding from DF22 to DF40 treatments, and the significant enhanced photosynthetic activity implied the evident physiological responses to drought stress.
WOS记录号	WOS:000412127500027 ; WOS:000412127500027
内容类型	期刊论文
源URL	[http://ir.iga.ac.cn/handle/131322/7587]
专题	东北地理与农业生态研究所_湿地与全球变化学科组_期刊论文
推荐引用方式 GB/T 7714	B. L. Wen, X. Y. Li, F. Yang, X. R. Lu, X. J. Li and F. Y. Yang. Growth and physiology responses of Phragmites australis to combined drought-flooding condition in inland saline-alkaline marsh, Northeast China, Growth and physiology responses of Phragmites australis to combined drought-flooding condition in inland saline-alkaline marsh, Northeast China[J]. Ecological Engineering, Ecological Engineering,2017, 2017,108, 108:234-239, 234-239.
APA	B. L. Wen, X. Y. Li, F. Yang, X. R. Lu, X. J. Li and F. Y. Yang.(2017).Growth and physiology responses of Phragmites australis to combined drought-flooding condition in inland saline-alkaline marsh, Northeast China.Ecological Engineering,108,234-239.
MLA	B. L. Wen, X. Y. Li, F. Yang, X. R. Lu, X. J. Li and F. Y. Yang."Growth and physiology responses of Phragmites australis to combined drought-flooding condition in inland saline-alkaline marsh, Northeast China".Ecological Engineering 108(2017):234-239.