Development and evaluation of the carbon–nitrogen cycle module for the GPFARM-Range model

Autor:	P.N.S. Bartling, Gale H. Dunn, Lajpat R. Ahuja, Liwang Ma, Zhiming Qi, Justin D. Derner
Rok vydání:	2012
Předmět:	Mean squared error Environmental engineering chemistry.chemical_element Forestry Soil science Soil carbon Horticulture Nitrogen Computer Science Applications chemistry Standing crop Grazing Environmental science Soil horizon Rangeland Leaching (agriculture) Agronomy and Crop Science
Zdroj:	Computers and Electronics in Agriculture. 83:1-10
ISSN:	0168-1699 1993-2006
DOI:	10.1016/j.compag.2012.01.007
Popis:	Rangelands cover approximately 50% of the terrestrial surface of the earth. Consequently, the soil carbon and nitrogen storage and turnover in rangeland systems are becoming increasingly important for sustainable grazing management and climate change. In this study, a carbon-nitrogen (C-N) cycle module from the N Leaching and Environmental Analysis Package (NLEAP) was added into the GPFARM-Range model. This linkage was tested against a 14-year forage dataset (1993-2006) with measurements of C and N in 1993, 2003, and 2006 near Cheyenne, WY. The results showed that the peak standing crop (PSC), and changes in soil organic carbon (SOC) and total soil organic nitrogen (TON) in the rangeland were reasonably simulated by the new GPFARM-Range model. The indices of agreement (d) were >0.85 and the mean bias errors (MBE) were
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fa2146eb25ce3f9d219360f47052984d https://doi.org/10.1016/j.compag.2012.01.007 Zobrazit plný text záznamu Full Text from ScienceDirect