Data/hora: 10/06/2024 02:40:14

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 09/12/2019
Data da última atualização: | 09/12/2019
Autoria: | GREEN, T. R.; ERSKINE, R. H.; KIPKA, H.; LIGHTHART, N.; EDMUNDS, D. A.; McMASTER, G. S.; DAVID, O.; CRUZ, P. P. N. da; FIGUEIREDO, R. de O.
Afiliação: | T. R. GREEN, USDA - United States Department of Agriculture, Colorado State University (CSU); R. H. ERSKINE; H. KIPKA; N. LIGHTHART; D. A. EDMUNDS; G. S. McMASTER; O. DAVID; PATRÍCIA PORTA NOVA DA CRUZ, Programa CSF do CNPq.; RICARDO DE OLIVEIRA FIGUEIREDO, CNPMA.
Título: | Integration of distributed measurements and simulations to explore spatial complexity in a field-scale agricultural watershed.
Ano de publicação: | 2019
Fonte/Imprenta: | In: Soil Science Society of America International Soils Meeting, 2019, San Diego, California. Soils Across Latitudes: [abstracts...] San Diego: SSSA, 2019. Ref. 44-2.
Idioma: | Inglês
Conteúdo: | Long-term measurements of high-resolution soil moisture across rolling terrain facilitate complex simulations of surface hydrology and soil moisture dynamics. Soil hydraulic properties that control water storage flow rates can vary markedly in space, and surface layers may vary temporally due to management events, reconsolidation and biological activity. Field measurements are expensive to collect and generally reveal complex variability that is difficult to fully characterize. Yet, these soil properties are represented using model parameters that may strongly affect simulated flows and the distribution of soil water in space and time. Thus model calibration using available measurements of soil moisture and surface runoff is essential. Here, we address the model spatial resolution and calibration detail needed to estimate available data by using five levels of spatial complexity from homogeneous to fully three-dimensional calibrated soil parameters. Issues of spatial scaling are also explored. Furthermore, a new model component of temporal changes in soil porosity and saturated hydraulic conductivity is tested to simulate effects of tillage and soil consolidation related to rainfall. Interactions between spatial and temporal parameters and processes will be discussed in terms of their influences on simulated soil moisture patterns and surface runoff.
Thesagro: | Bacia Hidrográfica; Hidrologia; Solo.
Thesaurus Nal: | Soil; Watersheds.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/206494/1/RA-FigueiredoRO-SSSAInternationalSoilsMeeting-2019.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (16583-1) - UPC - RA - DD -  -  -  - DIS