Grey prediction models on the activity period of the torrent disaster and debris flow activity intensity are developed based on the in situ survey data of the torrent disaster activities in the northern mountainous area of Beijing.

The types and present status of desertification disasters in the eastern Inner Mongolia are introduced.

In our study, the relation between disaster-leading effects of sandy desertification hazard in the regions and the developmental stages of their social, economic growth and their feedbacks has been taken into consideration, and efforts have been made to evaluate sandy desertification hazard in Horqin and Maowusu regions, the two typical agro-pastoral regions chosen for our research , by the met.

Study on Disaster History of North China in Recent Two Decades;

The studies in this respect have gained some achievements since late 1970s, which mainly cover the researches on disasters in the whole area and those in each respective province of the area.

Peasants living in hunger and cold move constantly and take risks under the frequent and serious disasters.

Famine in Shunzhi Areas and Anti-famine Policy of the 1890 s;

A Study on the Famine and Its Influence of the Huaihe Valley during the Republic of China;

The Discussion of Wan Bei s Famine and Relieving the people in stricken Area s Measure in the Republic of china;