globalchange  > 气候变化与战略
DOI: 10.1016/j.ecss.2020.106695
Response of a salt marsh plant to sediment deposition disturbance
Author: Tang H.; Xin P.; Ge Z.; Gong Z.; Yang Y.; Zhang Y.; Qi W.
Source Publication: Estuarine, Coastal and Shelf Science
ISSN: 2727714
Publishing Year: 2020
Volume: 237
Language: 英语
Keyword: Biomass ; Plant growth ; Salt marsh ; Sediment deposition ; Spartina alterniflora
Scopus Keyword: belowground biomass ; biomass ; carbon storage ; coastal wetland ; experimental study ; geoaccumulation ; growth rate ; herb ; monocotyledon ; organic matter ; saltmarsh ; sea level change ; Spartina alterniflora
English Abstract: Salt marshes (a type of coastal wetland with herbaceous plants) are one of the most productive ecosystems. The organic matter accumulated by plants, together with deposition of inorganic mineral sediments, contributes to vertical marsh growth and determines the marsh ability to cope with regional sea level rise. Deposition of mineral sediment, in turn, alters the growth of plant roots and shoots, and further marsh morphology and blue carbon storage. Based on mesocosm experiments simulating the sedimentation intensity, this paper examined the responses of Spartina alterniflora (a plant widely distributed in global salt marshes) to sediment deposition events (0–24 cm thicknesses). The plant height increased by 1.51 cm on average with 1 cm sediment deposition. New roots grew into the deposited sediment layers, resulting in a significant increase in the below-ground biomass. The below-ground biomass doubled with the treatment of 24 cm deposition thickness in comparison with that without deposition. The depth-dependent distribution of below-ground biomass changed from a monotonous (decreasing with soil depth) to a non-monotonic (increasing first and then decreasing) trend. This illustrates the growth of marsh plants in response to sediment deposition disturbance (similar to artificial or storm-induced sediment deposition) and have important implications for further investigations on marsh resiliency, blue carbon storage and marsh morphology. © 2020 Elsevier Ltd
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Document Type: 期刊论文
Appears in Collections:气候变化与战略

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Affiliation: State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China; State Key Laboratory of Estuarine and Coastal Research, Institute of Eco-Chongming, East China Normal University, Shanghai, China

Recommended Citation:
Tang H.,Xin P.,Ge Z.,et al. Response of a salt marsh plant to sediment deposition disturbance[J]. Estuarine, Coastal and Shelf Science,2020-01-01,237
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