A STUDY ON ENVIRONMENTAL EVOLUTION OF BEIJING-TIANJIN-TANGSHAN REGION FROM JIN DYNASTY TO THE REPUBLIC OF CHINA (A.D. 1153-1949)

TheBejingTial1jin-TangShanroponisoneofh1edevelopedareasinpolitics,econonucsandcultureinClllna,andanessel1tialplaceforagro-economicdevelopmentsinceanciottimes.Intheearlypartofti1eNeolithjcPenod,humanbeingShavebeenengngedinvariousproductonaCtlvitiesinti1eropon,especiallyinh1elast8OOyearssinceJlnDynastyAsBejinghasbeenthenationalcapitalaswellasthepoliticalandculturalcel1terinChina,thehumanpowerovernaturehasbecomestrongerandstrongerwhichexerteddireCtandfar-reaChinginfluenceonitsadjacedareas.b…

A STUDY ON ENVIRONMENTAL EVOLUTION OF BEIJING-TIANJIN TANGSHAN REGION FROM JIN DYNASTY TO THE REPUBLIC OF CHINA (A.D. 1153-1949)

Studies of the law and characteristics of population and land-use development of the Bejing-Tianjin-Tangshen region from 1153-1949 indicated that the land development process in the region is closely related with population change of the corresponding period In Jin Dynasty, population increased rapidly, in Yuan and Ming dynasties, population increased with a sustainability while from Qing Dynasty to the founding of the Republic, population increased substatially.Wasteland reclamation and cereals cultivation by garrison and farmers appeared in Jin Dyasty and reached climax in Ming Dynasty. Correlation analysis of poulation increase and cultivated area showed that they follow a linear equation which means that population increase and cultivated area expansion were at a similar rate.