Soil core metrics taken at Space for Time plots across the PIE LTER.

Soil cores were collected and evaluated at three different depth intervals for bulk density, organic matter by loss on ignition (LOI), pore water ammonium, and pore water salinity. These biotic and abiotic factors differ across marsh types and elevations and help to parameterize other measurements of marsh structure and function, as well as provide insight into marsh heterogeneity within a single site.

研究人员采集了土壤柱样（soil cores），并针对三个不同深度分层开展指标测定，涵盖容重、采用烧失量（loss on ignition, LOI）法测定的有机质、孔隙水铵态氮以及孔隙水盐度。上述生物与非生物因子随湿地类型与海拔高程的变化呈现显著差异，既可为湿地结构与功能的其他测定项目提供参数化依据，也有助于解析单一样地内的湿地异质性特征。