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Simulation of salt marsh vegetation community’ suitable habitat
s
in Yellow River Estuary Ⅱ：application

1
YI Yujun 1，2 ，XIE Hongyi 1，3 ，SONG Jie ，YANG Zhifeng 1，4
（1. State Key Laboratory of Water Environmental Simulation，School of Environment，Beijing Normal University，Beijing 100875，China；
2. Ministry of Education Key Laboratory of water and sediment Science，School of Environment，
Beijing Normal University，Beijing 100875，China；
3. Transport Planning and Research Institude，Ministry of Transport，Beijing 100028，China；
4. Institute of Environmental and Ecological Engineering，Guangdong University of Technology，Guangzhou 510006，China）

Abstract：The natural salt marsh vegetation in the Yellow River Delta is obviously banded distributied un⁃
der the combined effect of runoff and tides. To clarify the evolution of soil water and salt conditions in the
Yellow River Delta and its impact on salt marsh vegetation， this study simulated the spatial and temporal
distribution of suitable habitat and biomass of salt marsh vegetation based on the coupled groundwater dy⁃
namic and population dynamic habitat model with different soil water and salt conditions in the Yellow Riv⁃
er Delta under the combined influence of runoff and tide. Based on the water resources of Lijin station of
the Yellow River in different years，this study simulated the discharge time series under five typical scenari⁃
os of the maximum flow year， wet flow year， medium flow year， dry flow year and minimum flow year.
The simulation results of the effects of different river runoff processes on salt marsh vegetation showed that
the suitable habitat of salt marsh vegetation in the study area has banded distribution on both sides of the
Yellow River and scattered distribution in the area far from the Yellow River. The biomass accumulation of
phragmites australis mainly presents a narrow strip shape，while that of suaeda salsa and Tamarix chinensis
was uniformly distributed in the surface area. In addition，none of the three kinds of salt marsh vegetations
has biomass accumulation in scattered suitable habitats. Under the time series of wet flow year，the month⁃
ly average area of suitable habitat in the growing season was the largest，up to 16.66% of the total area of
the study area. Under the time series of dry flow year，the monthly average biomass in the growing season
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was the largest，up to 13.86×10 kg. This study could be used to predict the effects of different water trans⁃
fer scenarios on groundwater salinity conditions in estuarine wetlands and on the distribution of salt marsh
vegetation. It could also guide the protection and restoration of salt marsh vegetation in the estuary delta.
Keywords： habitat simulation； groundwater dynamic； salt marsh vegetation； estuarine wetlands； population
growth；interspecies competition

（责任编辑：韩 昆）

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