You have read with concern that the number of problems caused by irresponsible social drinking is rising.
第一层结构（主干）中 You是主语,have read是谓语,that从句作宾语.SVO结构.
宾语从句中the number of problems 为主语,is rising 是谓语,caused by irresponsible social drinking是后置定语.SV结构.
你已经注意到,由于社交活动中不负责任的饮酒造成的问题正在增多.