In modern times, man-made destruction and irrational use make the shrubbery area reduced sharply and lead to insect and rats disaster and fire and aggravate the decline of shrubbery.

• 近、现代以来，人为的破坏和不合理利用使灌木林面积在其自然分布区域内迅速减少，并导致病虫鼠害和火灾的严重发生危害，加剧了灌木林的衰退。