阅读下面的诗歌，回答问题。
                                                                                                            金陵三迁有感^①
                                                                                                                     宋·梁栋
                                                                                             憔悴城南短李绅^②，多情乌帽染黄尘。
                                                                                             读书不了平生事，阅世空有后死身。
                                                                                              落日江山宜唤酒，西风天地正愁人。
                                                                                              任它蜂蝶黄花老，明月园林是小春。
        【注释】①这首诗写于南宋灭亡前夕，当时作者因被谗在金陵（今江苏南京）屡遭贬官，有感而作。②李绅：中唐诗人。身材短小，秉性刚直，忠于朝廷。诗人在此处以李绅自比。