On the basis of the analysis on the Yangtze vole's disaster history and condition in Dongting Lake area,the influence of the lake beach's environmental evolution on the vole disaster is studicd in this paper.The rise of low-middle-level beach area causes the vole's population explosion,the reduction of high-level beach area forces the voles into the farmland during the flood season,and the emergence period's continual increase extends the vole's habitat areas and forces them to migrate into the farmland.The discarded dike provides a rest place halfway for the voles,which escape the flood,and the natural enemies of the voles,which are a natural barrier against the vole's population expansion,decreases.According to this study,the conclusions are put for ward as follows:after Three-gorge Project's construction it will produce great influences on the beach evolution in Dongting Lake area,leading to the changes of the vole's ecological environment situation and resulting in the vole's population changes which deserves attention.
vole disasterDongting Lake areaLake beachYangtze vole(Microtus fortis)
NETL
NSTL
万方数据
维普
