The products of hydrothermal degradation contained abundant organic matter and humic matter, and the degree of humification increased with the increase of temperature of hydrothermal degradation.

• 经过湿解处理的有机物料有机质含量丰富并含有大量腐殖酸，随湿解温度升高，腐殖化程度增加。在湿解过程中有机物料的主要化学组分同时受到热、湿、水解等各种作用，最终形成腐殖质。