ON THE SIGNIFICANCE AND TRENDS OF NEGATIVE LANDFOM STUDY

This article gives some primary concepts about negative landforms and em-phasizes the importance of the landforms which have been overlooked for a long time, from three aspects as follows:(1) the real landform texture on the surface of the earth;(2) the two prime systems of landforms being as close as lips and teeth;(3) the important area of man's economic activities.It aims at calling attention to negative landform studies. Finally, it points outsix trends of negative landform studies:(1) the theoretical study of. negative landforms;(2) the study of negative landforms connected with positive landforms;(3) the study of negative landforms and landform development;(4) the study of negative landforms and landform prediction;(5) the study of negative landforms and landform mapping;(6) the study of negative landforms and land-management.