Characteristics and sources of soil nutrients for the floodplain forestation and a proposal for the management

在河道中的洪泛区造林增加了洪水的风险，也恶化了原始生态系统。河漫滩的土壤通常是贫瘠的，含氮量非常有限。因此，洪泛区的植物演替在很大程度上取决于土壤氮素的有效性。由于大气沉降和微生物固氮作用，洪泛区土壤中的氮库扩大。然而，土壤中氮素的富集及其在植物-土壤界面的处理往往受到洪水事件的干扰。在评价这些过程后，建立了植物演替的预测模型。

Floodplain forestation in a river channel increases the risk of floods and also deteriorates the original ecosystem. The soil of a floodplain is usually sterile and has very limited in nitrogen content. Therefore, plant succession in the floodplain is largely governed by the availability of soil nitrogen. The nitrogen pool in the floodplain soil expands due to atmospheric fallout and microbial N-fixation. However, the nitrogen enrichment in soil and its processing at the plant-soil interface is often intervened by the flooding events. After evaluating these processes, the prediction model of the plant succession was developed.