Quantifying the Correlated Spatial Distributions between Tidal Creeks and Coastal Wetland Vegetation in the Yellow River
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DEGRADATION AND ECOLOGICAL RESTORATION OF ESTUARINE WETLANDS IN CHINA
Quantifying the Correlated Spatial Distributions between Tidal Creeks and Coastal Wetland Vegetation in the Yellow River Estuary Yunbao Fan 1,2 & Demin Zhou 1,2 & Yinghai Ke 1,2 & Yunzhe Wang 1,2 & Qiwei Wang 1,2 & Lei Zhang 1,2 Received: 6 November 2019 / Accepted: 25 March 2020 # Society of Wetland Scientists 2020
Abstract For providing a better understanding of the quantitative relationship between typical wetland vegetation and their tidal creek habitats in the Yellow River Estuary, the tidal creeks and three wetland vegetation types of Spartina alterniflora, Phragmites australis and Suaeda salsa were selected to analyze their distribution characteristics and explore the correlation between their spatial distributions within the different areas in the study. Authors applied the methods of regional statistical analysis, proximity analysis and spatial autocorrelation analysis to quantifying the spatial distribution characteristics of vegetation and tidal creeks and their spatial interaction as well. The results showed that 86.87% of S. alterniflora was distributed in the salt-fresh water interaction zones along the Yellow River. S. alterniflora occupied more space around the tidal creeks. P. australis and S. salsa were only closely related to low-order tidal creeks, but the curvature of their surrounding tidal creeks was higher than that of S. alterniflora. The three types of vegetation in the Tidal Creek Buffer Zone (TCBZ) had spatial agglomeration in their habitats. Among of three vegetation types, S. alterniflora had the closest relationships with tidal creeks. This study has an important theoretical and practical significance for the management and restoration of related wetland ecosystems. Keywords Eco-hydrological connectivity . Invasive plant . Spartina alterniflora . Spatial analysis . Wetland restoration
Introduction The existence of coastal wetland plants and tidal creeks is very important for the maintenance of wetland biodiversity (Fitch et al. 2009). The tidal creek is a tidal channel developed in the intertidal zone due to ocean dynamics, especially tidal action (Wu et al. 2013). As a typical geomorphic element developed on the tidal flat, the tidal creek is an important channel for the tidal flat and tidal creek system to continuously exchange materials, energy and information with the outside world (Luo et al. 2018), and it is a linkage between the ocean and the coastal wetland (Fischer et al. 2000; Zhao et al. 2010). The * Demin Zhou [email protected] * Yinghai Ke [email protected] 1
College of Resource, Environment and Tourism, Capital Normal University, Capital Normal University, Beijing 100048, China
2
Key Laboratory of 3D Information Acquisition and Application of Ministry, Capital Normal University, 105 West Sanhuan North Road, Haidian District, 100048 Beijing, People’s Republic of China
research on the relationship between vegetation and tidal creeks has attracted extensive attention recently due to its importance t
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