METHODS FOR MONITORING AND ASSESSING SANDY DESERTIFICATION IN THE NORTH CHINA

摘要/Abstract

摘要： Desertification is a serious environmental and economic problem which is now perplexing many countries and regions in the world. China is one of those countries suffering from the severe land desertification. This paper discusses the monitoring and assessing of sandy desertification in the North China and the applicable methods. Supported by a national research project, major sandy desertified regions, as many as more than 500 000 km² in the North China, had been monitored and assessed based on the multi temporal remotely sensed data and the monitoring and assessing methods. The results showed that there was an average sandy desertified land spread of 2 100 km² per year during the middle 1970's to the late 1980's, which mainly happened in the agropastoral area, desert steppe, margin of oases and lower reaches of continental river. The main cause was human negative activity, which totaled 94% of contribution. So only the positive reaction can deal with the sandy desertification.

关键词: The North China, Sandy desertification, Monitoring and assessing methods

Abstract: Desertification is a serious environmental and economic problem which is now perplexing many countries and regions in the world. China is one of those countries suffering from the severe land desertification. This paper discusses the monitoring and assessing of sandy desertification in the North China and the applicable methods. Supported by a national research project, major sandy desertified regions, as many as more than 500 000 km² in the North China, had been monitored and assessed based on the multi temporal remotely sensed data and the monitoring and assessing methods. The results showed that there was an average sandy desertified land spread of 2 100 km² per year during the middle 1970's to the late 1980's, which mainly happened in the agropastoral area, desert steppe, margin of oases and lower reaches of continental river. The main cause was human negative activity, which totaled 94% of contribution. So only the positive reaction can deal with the sandy desertification.

Key words: The North China, Sandy desertification, Monitoring and assessing methods

WANG Tao, Toshiaki IMAGAWA, WU Wei. METHODS FOR MONITORING AND ASSESSING SANDY DESERTIFICATION IN THE NORTH CHINA[J]. 中国沙漠, 1999, 19(1): 6-11.

WANG Tao, Toshiaki IMAGAWA, WU Wei. METHODS FOR MONITORING AND ASSESSING SANDY DESERTIFICATION IN THE NORTH CHINA[J]. JOURNAL OF DESERT RESEARCH, 1999, 19(1): 6-11.