Except as provided herein and unless otherwise provided by ordinance, the general law of the State of California relative to the improvement of, and work upon streets, lanes, alleys, courts, places and sidewalks, including the construction of sewers and providing for the laying out, opening, extending, widening, straightening or closing up in whole or in part of any street, square, lane, alley, court or place within municipalities, and to condemn and acquire any and all land and property necessary and con-venient for that purpose; and for providing a system of street improvement bonds to represent certain assessments for the cost of street work and improve-ments within municipalities, and to provide for the payment of such bonds; and providing for the planting, maintenance and care of shade trees upon streets, lanes, alleys, courts and places within municipalities, and of hedges upon the lines thereof, and for the eradication of weeds within city limits, now in force, or which may hereafter be adopted by the legislature of this state is hereby made a part of this Charter, and shall govern the council in such matters.