The traditional idea of man-land relationship with Yunnan nationalities and ecotourism;

Research on the vulnerability and the evaluation of the human-earth system in mining cities;

Based on activities of SARS control in China and theory of human-earth systems science, a logic model of transmission channels of pathogenic factors in the processes of interaction between human and earth, and a logic model of interaction between human and earth for SARS control are sequentially presented.

The optimal control of regional human-earth system is always an important task of modern ge ography.

Having the characteristic of diversity, instability and regional transition, the human-environment systems in the North-eastern border of Tibetan plateau and its surrounding areas are worth to be studied, hopefully which will greatly contribute to rich the theories and practice of approaching to human-environment relations.

Besides regional heterogeneity and holistic view, which have already been highly emphasized in Geography, the human-environment system also has vulnerability, risk, resilience and adaptability, which are newly discovered inherent features.

Man-Earth system is composed of human society system and physical system of the earth, whose competition and coordination promote man-earth system.

The diversity and cause of man-earth system are the basic content of man-earth relationship.

Taking Horqin sandland as an example, the key characters of man land system is analyzed for the north agro pasture transitional zone, which include fragility, edge effect, fluctuate and self controlling.