Variations of Soil Organic Matter and Nutrients in Degenerated Wetland in Response to Ecological Restoration in Shuangtaizi Estuary, Northeast China

摘要

The aim of the research is to study the changes of soil properties during the process of wetland restoration, and evaluate the results or effect of wetland restoration. Soil samples were collected from both restored and unrestored wetlands in Shuangtaizi estuary, and then we compared seasonal changes of soil properties in these two areas. The results indicated a significant increase of NH_4-N, whereas TP (total phosphorous) declined slightly in restored wetland. In addition, significant seasonal variations of SOM (soil organic matter) and nutrients were exhibited in restored and unrestored wetlands especially in July and August. Meanwhile, we found that C/P ratio in restored wetland increased in summer and reduced in September. All these have suggested that soil properties and nutrients proportions were changed after the restoration, which would be more conductive for soil ecological function.