Abstract:Six soil profiles were selected in the Dinghushan Biosphere Reserve (DHSBR) (23°09′~23°11′N, 112°30′~112°33′E), and the Xiaoliang Ecological Station established by South China Institute of Botany, Chinese Academy of Sciences, for our studies on dynamics of soil organic matters (SOM) in the south subtropical areas. Each selected profile was sampled using thin layered methods, and every sample is about 1 5 to 2 0 kg weight. Two soil profiles were excavated in July 1998, at the forest vegetation zone (SL) a...