Carbon and nitrogen storage under different forest ecosystems in mid-subtropical regions Storage and allocation of carbon and nitrogen in Robinia pseudoacacia plantation at different ages in the loess hilly region, China. Soil water stable aggregates and carbon and nitrogen storage enhanced by conversion of farmland to shrub and grass in China Loess Plateau: the influence of conversion cultivation time Variation of the Soil Carbon and Nitrogen for Initial Stage after the Felling in Tropical Montane Rainforest of Bawangling,Hainan Island Dynamics of carbon and nitrogen storage of Cupressus chengiana plantations in the arid valley of Minjiang River, Southwest China. Soil carbon and nitrogen storage of different land use types in northwestern Shanxi Loess Plateau. Carbon and nitrogen storage in monoculture and mixed young plantation stands of Erythrophleum fordii and Pinus massoniana in subtropical China