The Impact of Agricultural Soil Erosion on the Global Carbon Cycle

Autor: Gregory W. McCarty, Gerard Govers, Johan Six, S. De Gryze, J. C. Ritchie, K. Van Oost, Costas Kosmas, Roel Merckx, Timothy A. Quine, Juan Vicente Giráldez, Goswin Heckrath, J. R. Marques da Silva, Jennifer W. Harden

Publikováno v: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação
instacron:RCAAP
Van Oost, K, Quine, T A, Govers, G, De Gryze, S, Six, J, Harden, J W, Ritchie, J C, McCarty, G W, Heckrath, G, Kosmas, C, Giraldez, J V, Marques da Silva, J R & Merckx, R 2007, ' The Impact of Agricultural Soil Erosion on the Global Carbon Cycle ', Science, vol. 318, pp. 626-629 . https://doi.org/10.1126/science.1145724

Agricultural soil erosion is thought to perturb the global carbon cycle, but estimates of its effect range from a source of 1 petagram per year –1 to a sink of the same magnitude. By using caesium-137 and carbon inventory measurements from a large-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f78079fef720d244f0707718b7bb3f2
https://doi.org/10.1126/science.1145724

Wheat field erosion rates and channel bottom sediment sources in an intensively cropped northeastern Oregon drainage basin

Autor: G. N. Nagle, J. C. Ritchie

Publikováno v: Land Degradation & Development. 15:15-26

Sediment tracers were used to quantify erosion from cultivated fields and identify major source areas of channel bottom sediment within the Wildhorse Creek drainage, an intensively cropped tributary of the Umatilla River in northeastern Oregon, USA.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f2e00847187ca0bc15abaaf9db264b85
https://doi.org/10.1002/ldr.587

Application of137Cesium to estimate erosion rates for understanding soil carbon loss on long-term experiments at Pendleton, Oregon

Autor: J. C. Ritchie, P. E. Rasmussen

Publikováno v: Land Degradation & Development. 11:75-81

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::eff754b458b195aeaee23f4928c70d59
https://doi.org/10.1002/(sici)1099-145x(200001/02)11:1<75::aid-ldr379>3.0.co

Measurements of land surface features using an airborne laser altimeter: the HAPEX-Sahel experiment

Autor: J. C. Ritchie, M.A. Weltz, Massimo Menenti

Publikováno v: International Journal of Remote Sensing 17 (1996) 18
Scopus-Elsevier
International Journal of Remote Sensing, 17(18), 3705-3724

An airborne laser profiling altimeter was used to measure surface features and properties of the landscape during the HAPEX-Sahel Experiment in Niger, Africa in September 1992. The laser altimeter makes 4000 measurements per second with a vertical re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63cf14e0ba9b97ab04ae982b3648f850
https://doi.org/10.1080/01431169608949179

Pollen marqueur de transports à longue distance dans l'atmosphère du sud de l'Ontario (Canada)

Autor: P. Guinet, Geneviève Cambon, J. C. Ritchie

Publikováno v: Canadian Journal of Botany. 70:2284-2293

An analysis of weekly air samples at four sites in southern Ontario (London, Toronto, Peterborough, Sudbury) provides conclusive evidence for the long-distance transport of pollen of the exotic taxa Entada (Mimosaceae), Dodonaea (Sapindaceae), and Ep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac810a030c2053628c80f25d2d58d8e0
https://doi.org/10.1139/b92-284