This chapter is enacted to promote the general welfare of the Town of Chelmsford, to protect the health and safety of its inhabitants, to encourage the most appropriate use of land throughout the town, to preserve the cultural, historical and agricultural heritage of the community, to increase the amenities of the Town and to reduce the hazard from fire by regulating the location and use of buildings and the area of open space around them, all as authorized by the provisions of the Zoning Act, MGL c. 40A, as amended, and by Article 89 of the amendments to the Constitution of the Commonwealth of Massachusetts.