Change in marsh surface elevation measured with a Surface Elevation Table (SET) at control and fertilized plots at Spartina alterniflora, S.patens and Typha sp. marshes, Plum Island Ecosystem LTER, MA.

A Surface Elevation Table (SET) is used to measure changes in the elevation of the marsh surface at three long term marsh fertilization experimental research sites. The sites include one Typha-dominated brackish marsh, one Spartina alterniflora-dominated salt marsh, and one S. patens-dominated salt marsh. Sites are located on the Rowley and upper Parker Rivers in the Plum Island Ecosystem (PIE) LTER site.地表高程测量仪（Surface Elevation Table，SET）被用于监测三个长期沼泽施肥实验研究样地的沼泽地表高程变化。该三类样地分别为：以香蒲（Typha）为优势种的咸淡水沼泽、以互花米草（Spartina alterniflora）为优势种的盐沼，以及以Spartina patens（S. patens）为优势种的盐沼。所有样地均坐落于普卢默岛生态系统（Plum Island Ecosystem, PIE）长期生态研究（LTER）站点范围内的罗利河与帕克河上游流域。