Short-time response in root morphology of alien invasive plant Amaranthus retroflexus to water level gradient in wetland

In order to understand the invasibility of wetland ecosystem, controlled experiment was conducted to investigate the response of root morphology of the alien invasive plant <i>Amaranthus retroflexus</i> L. to water level gradient in wetland. Water level from low to high resulted in dry, wet and flooding conditions. There were five replicates in each treatment. The data, including biomass and root morphological parameters (root mean diameter, root length, root surface, root volume, special root length, special root surface), were collected by weighing and analyzing using WinRHIZO after scanned.

为探究湿地生态系统的可入侵性，本研究开展控制实验，以考察外来入侵植物反枝苋（Amaranthus retroflexus L.）的根系形态对湿地水位梯度的响应。实验设置由低到高的水位梯度，对应形成干旱、湿润与淹水三种生境，每组处理设置5个重复。通过扫描样品后利用WinRHIZO软件完成称重与分析，获取了生物量及根系形态参数数据，包括根系平均直径、根长、根表面积、根体积、比根长与比根表面积。