Composition and Driving Factors of Vascular Plants in Rural Small Wetlands:A Case Study of Gong'an County,Jingzhou City,Hubei Province
Rural small wetlands perform significant ecological services,but most of these wetlands lack adequate management and protection.In order to scientifically understand and protect rural small wetlands,this study investigated the vascular plant composition of a total of 27 small wetlands in rural small lakes,reservoirs,and channels in Gong'an County,Jingzhou City,Hubei Province,as well as the anthropogenic factors such as surrounding land use,slope protection mode,human interference intensity,present function,number of water pollutant species and water nutrient degree,and viewed them as the driver factors to analyse the species richness.The results showed that a total of 115 species of vascular plants were found in 42 families and 84 genera in the small wetlands of Gong'an County.The distribution types of family and genus were mainly world distribution type and tropical distribution type.Angio-sperms were absolutely dominant,and the dominant families were Gramineae and Cyperaceae,and the life types of plants were mainly perennials.The results of non-metric multidimensional scaling showed that there were differences in the vegetation composition of the three types of small wetlands.There was no significant difference in species richness among the three types of small wetlands and the species richness was lower in autumn than that in summer.Furthermore,the drivers of species richness were ranked by importance using the shapley additive explanation model and a structural equation model was constructed.The results showed that the most important driving factor was the surrounding land use form,followed by the slope protection mode.The surrounding land use form was the most significant interaction affecting species richness,which had a direct positive effect on species richness,and had negative and positive effects on species richness through the impact of present function and slope protection mode.
small wetlandhygrophytesshapley additive explanation modelstructural equation modelGong'an county
NETL
NSTL
万方数据
