1. The natural economic conditions of yanchi county Yanchi County (in Ningxia Province, China) lies between the Muwus Desert and theLoess Plateau, its geographical location is a typical transition belt. The view from ...1. The natural economic conditions of yanchi county Yanchi County (in Ningxia Province, China) lies between the Muwus Desert and theLoess Plateau, its geographical location is a typical transition belt. The view from south tonorth: the general configuration of the earth’s surface is from the Loess Plateau to Ordos ta-bleland; the climate is from semi arid to arid. The transition of its geogrophical location pro-vides the area such features which are various,complex and fragile in natural conditions.展开更多
Based on explicating the definition of ecotone, this paper discussed emphatically the distribution and features of joint zone between land and water, transition zone between mountains and plains, and intersection zone...Based on explicating the definition of ecotone, this paper discussed emphatically the distribution and features of joint zone between land and water, transition zone between mountains and plains, and intersection zone between agricultural and animal husbandry regions. The geographic environment of the three ecotones were evaluated, their developing tendency predicted and the corresponding measures to be taken in the 21st century pointed out.展开更多
文摘1. The natural economic conditions of yanchi county Yanchi County (in Ningxia Province, China) lies between the Muwus Desert and theLoess Plateau, its geographical location is a typical transition belt. The view from south tonorth: the general configuration of the earth’s surface is from the Loess Plateau to Ordos ta-bleland; the climate is from semi arid to arid. The transition of its geogrophical location pro-vides the area such features which are various,complex and fragile in natural conditions.
文摘Based on explicating the definition of ecotone, this paper discussed emphatically the distribution and features of joint zone between land and water, transition zone between mountains and plains, and intersection zone between agricultural and animal husbandry regions. The geographic environment of the three ecotones were evaluated, their developing tendency predicted and the corresponding measures to be taken in the 21st century pointed out.