Inouye R S, Huntly N J, Tilman D, Tester J R
Department of Ecology and Behavioral Biology, University of Minnesota, 318 Church Street, S.E., 55455, Minneapolis, MN, USA.
Oecologia. 1987 May;72(2):178-184. doi: 10.1007/BF00379264.
Pocket gophers (Geomys bursarius: Geomyidae Rodentia) are shown to affect soil resources and thus, indirectly, vegetation. Gophers reduce average soil nitrogen near the surface and increase point-to-point heterogeneity of soil nitrogen by moving nitrogen-poor subsurface soil to the soil surface. Data from 22 old fields at Cedar Creek Natural History Area, Minnesota, USA show correlations of soil nitrogen, vegetation, and gopher mounds that are consistent with this indirect mechanism by which gophers affect local species composition and old field succession.
囊鼠（Geomys bursarius：囊鼠科啮齿目）被证明会影响土壤资源，进而间接影响植被。囊鼠通过将贫氮的地下土壤移至土壤表层，降低了表层土壤的平均氮含量，并增加了土壤氮的点对点异质性。来自美国明尼苏达州雪松溪自然历史保护区22个旧耕地的数据显示，土壤氮、植被和囊鼠土丘之间的相关性与这种囊鼠影响当地物种组成和旧耕地演替的间接机制相一致。
