Ladnyĭ I D, Naĭden P E, Klimchenko I Z, Petrov P A
Zh Mikrobiol Epidemiol Immunobiol. 1975 Oct(10):3-10.
Under the effect of human economic activity in the natural plague foci there occurred changes in the structures of local biocenoses. The extent and the direction of these changes were determined by the character and the scale of the economic activity. The final outcome of ploughing up, irrigation and supply with water of the vast areas is elimination of the focus or of its autonomic areas, but excessive exploitation of the desert pastures not infrequently leads to the opposite result. Large industrial construction and building of means of communications decreased the territories of the natural foci of plague only slightly, although no significant action was produced by them on the structure of biocenoses and the state of the foci.
在自然鼠疫疫源地，受人类经济活动影响，当地生物群落结构发生了变化。这些变化的程度和方向取决于经济活动的性质和规模。大面积垦荒、灌溉和供水的最终结果是疫源地或其独立区域的消除，但对荒漠牧场的过度开发往往导致相反的结果。大型工业建设和交通设施建设仅略微减少了鼠疫自然疫源地的面积，尽管它们对生物群落结构和疫源地状况没有产生重大影响。
