Ecological

[iːkə'lɒdʒɪk(ə)l;ek-] or ['ikə'lɑdʒɪkl]

(adj.) of or relating to the science of ecology; 'ecological research' .

(adj.) characterized by the interdependence of living organisms in an environment; 'an ecological disaster' .

杰拉尔德编辑--From WordNet