Optimum water supplement strategy to restore reed wetland in the Yellow River Delta

	Optimum water supplement strategy to restore reed wetland in the Yellow River Delta
	X. H. Wang, D. J. Zhang, B. Guan, Q. Qi and S. Z. Tong
刊名	Plos One
	2017
卷号	12 期号:5
通讯作者	佟守正
中文摘要	In order to supply optimum water to restore reed wetlands used for bird habitats, a field investigation and greenhouse experiment were conducted. Three water supplementation stages (early stage at 20 May, middle stage at 20 July and later stage at 20 September, respectively) and five depths (0, 10, 15, 20 and 35 cm over the surface, respectively) were established, with three replicates for each treatment combination. Reed growth characteristics (survival rate, height, density and biomass) and soil properties of field investigation and experiment were recorded to determine the impacts of water supplementation on reed wet-land restoration. The field investigation showed that reeds in natural wetlands grow better than those in degraded wetlands and soil properties in degraded wetlands were significantly different from soils in natural wetlands. With freshwater supplementation, reed growth characteristics and soil properties greatly improved. As water depth increased, reed growth decreased gradually. Reeds grew best in shallow water depth (<= 10cm) than in the greater flooding depths. Saturated soils with no standing water at the early stage of reed growth increased reed survival and water depth can be increased as the reeds grow. During the process of water supplementation, soil salinity was reduced significantly. Soil salinity was reduced dramatically at early and middle stages of reed growth, but it increased slightly at the later stage. Soil pH increased greatly during the experiment. Soil total nitrogen (TN) and total organic carbon (TOC) showed contrasting changes, with soil TN decreasing and TOC increasing. To best manage reed wetlands restoration, we suggest saturating wetland in the spring to stimulate reed germination, increasing surface water depth up to 15cm at the stage of reed rapid growth, and then reducing water depth during the later growth stage.
内容类型	期刊论文
源URL	[http://ir.iga.ac.cn/handle/131322/7585]
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	X. H. Wang, D. J. Zhang, B. Guan, Q. Qi and S. Z. Tong. Optimum water supplement strategy to restore reed wetland in the Yellow River Delta[J]. Plos One,2017,12(5).
APA	X. H. Wang, D. J. Zhang, B. Guan, Q. Qi and S. Z. Tong.(2017).Optimum water supplement strategy to restore reed wetland in the Yellow River Delta.Plos One,12(5).
MLA	X. H. Wang, D. J. Zhang, B. Guan, Q. Qi and S. Z. Tong."Optimum water supplement strategy to restore reed wetland in the Yellow River Delta".Plos One 12.5(2017).