自己尚無明確的機製解釋。查一查吧,
Dam effects on droughts magnitude and duration in a tran*****oundary basin: the
Lower River Tagus, Spain and Portugal.
López-Moreno, J.I.1, Vicente-Serrano, S.M.1, Beguería, S.2, García-Ruiz, J.M.1, Portela, M.
M.3, Almeida, A. B.3