Abstract HydroGeoMorphic (HGM) approach could examine relatively more details for wetland functions. However, HGM cannot be utilized in assessing the functional improvement of wetlands because it is limited to evaluating the similarity between the reference and the target wetlands. Therefore, this study proposes the Modified HydroGeoMorphic (MHGM) approach for considering better functions of target wetlands. The values of Index of Function (FCI) and variables in HGM are in the range of 0.0 to 1.0 and so, in MHGM, we redefine the values of variables in 0.0 to 2.0 to find a better function for the target wetland. Based on the monitored variables, FCIs for the wetland functions were estimated and the functions of dynamic surface and subsurface water storage, spatial structure of habitat, and maintaining the distribution and abundance of vertebrates in Imjin riverine wetland as a target wetland showed better FCIs than those of Hwapo which is a reference. This means that MHGM reflects an actual change in FCI, leading to a more favorable evaluation of the target compared to the reference wetland. This indicates that MHGM considers actual functional progress of wetlands by improving HGM's limitations in assessing change.

中文翻译：

---

估计河流湿地功能数量变化的修正水文地貌方法

摘要 HydroGeoMorphic (HGM) 方法可以检查相对更多的湿地功能细节。然而，HGM 不能用于评估湿地的功能改善，因为它仅限于评估参考湿地和目标湿地之间的相似性。因此，本研究提出了改进的 HydroGeoMorphic (MHGM) 方法来考虑目标湿地的更好功能。HGM 中函数索引 (FCI) 和变量的值在 0.0 到 1.0 的范围内，因此，在 MHGM 中，我们重新定义了 0.0 到 2.0 中的变量值，以找到更好的目标湿地函数。根据监测变量估计湿地功能的FCI，动态地表和地下蓄水功能、栖息地空间结构、并保持临津河流湿地中脊椎动物的分布和丰度作为目标湿地显示出比作为参考的华浦更好的 FCI。这意味着 MHGM 反映了 FCI 的实际变化，与参考湿地相比，可以对目标进行更有利的评估。这表明MHGM通过改善HGM在评估变化方面的局限性来考虑湿地的实际功能进展。