Genotypic Diversity Improves Photosynthetic Traits of Hydrocotyle vulgaris and Alters Soil Organic Matter and N2O Emissions of Wetland Microecosystems

In plant communities, genotypic diversity can impact the community structure and ecosystem functions, but related research has focused on native plants. Therefore, whether affects growth of invasive plants then changes wetland microecosystem remains unresolved. this study, six different genotypes Hydrocotyle vulgaris, a common in China, were selected to construct populations with three levels (one, three, genotype combinations, respectively) explore effects physiological traits H. soil nutrients greenhouse gas emissions under flooding conditions. We found that improved leaf area, root shoot ratio photosynthetic especially flooding. Moreover, increased organic matter (SOM) contents microecosystem, while it reduced cumulative nitrous oxide Overall, further SOM, N2O microecosystem. The results study provide theoretical basis for exploring how affect invasiveness ecosystems microecosystems.