 The study found that the soil and sediment around the Chame inland sea contained different amounts of nitrogen, with the soil containing more nitrogen than the sediment. Organic nitrogen was the most abundant form of nitrogen in both the soil and sediment, but it was more abundant in the soil than in the sediment. The soil and sediment also had different nitrogen-related physical and chemical properties, such as organic matter content, cation exchange capacity and clay content. These properties were strongly correlated with each other and with the amount of nitrogen present. The study concluded that the soil and sediment around the Chame inland sea have different nitrogen-related physical and chemical properties, which can affect the nitrogen cycle. This article was authored by Kuan Yuan, Yan Wei Song, Guowei Fu and others.