Understanding wetland plant dynamics in response to water table changes through ecohydrological modelling

摘要: Vulnerability of wetland vegetation to water table changes is a widely studied topic in the field ecology. Extreme flood or drought conditions imposed on wetlands cause disappearance plants shift regime. The recovery such plant compositions particular importance when subjected frequent fluctuations resulting from land use and requires knowledge mechanisms underlying evolution growth changing hydrologic conditions. We used spatially varying, coupled groundwater–vegetation model investigate survival mechanism herbaceous plants. were long-term drainage because that caused one species composition. In an effort revive disappeared species, hypothetical soil saturation was introduced onto study domain through elevated level. Even though system had returned hydrologically favourable environment, unable recover, which turn led evaluation factors determine re-emergence sensitivity analysis. results analysis showed recovered during scenarios reduced duration drawdown, increased assimilation rates competitiveness. also competitiveness plants, modelled by classic Lotka–Volterra algorithm, supersedes any unfavourable characteristics. this demonstrated ability response facilitate understanding development hierarchy important promote their altered Copyright © 2012 John Wiley & Sons, Ltd.