Managing Soil Organic Carbon Concentration by Cropping Systems and Fertilizers in the North China Plain - Principles of Sustainable Soil Management in Agroecosystems - page 201

Reeder, J. D., Schuman, G. E., Bowman, R. A. 1998. Soil C and N changes on conserva-
tion reserve program lands in the Central Great Plains. Soil and Tillage Research 47:
207-218.
Shi, Y. C. 2003. Comprehensive reclamation of salt-affected soils in China's Huang-Huai-Hai
Plain. Journal of Crop Production 7(1-2): 163-179.
Statistics Bureau of Quzhou County (SBQC), 1980. 1999. 2006. Annual social and economi-
cal statistics for Quzhou County. Quzhou County, Hebei Province, People's Republic
of China.
Tiessen, H., Mioir, J. O. 1993. Total and organic carbon. In: Soil Sampling and Methods of
Analysis , Ed, M. R. Carter, 187-199. Boca Raton: Lewis Publishers.
Zeidler, J., Hanrahan, S., Scholes, M. 2002. Land-use intensity affects range condition in arid
to semi-arid Namibia. Journal of Arid Environments 52: 389-403.