[Quantification of arable-area parameter determining the biodeversity by the analysis of ecological and conventional production methods]

agricultura alternativa agriculture alternative alternative agriculture brandenbourg brandenburg brandenburgo conduite de la culture conservation des ressources contabilidad regional crop management cropping systems ecologia ecologie ecology economic analysis encuestas environmental impact environmental protection especies evaluation impact sur l'environnement impacto ambiental integrated plant production land management manejo del cultivo pollution by agriculture pollution par l'agriculture protection de l'environnement regional accounting regional planning resource conservation sistemas de cultivo site factors species surveys