Abstract: As a part of the earth’s living creatures, we humans have been making use of natural resources and environment as our first need for survival and development, and this remains the same even in the modern period. In fact, with the rapid growth of social wealth and population, maintaining a stable of the so-called man-land relationship is always the primary task and basic goal of national sustainable development, especially for big countries. An integrated factor analysis covering natural endowment (fresh water, arable land, grassland, wood land, energy and minerals) and human activity (population, GDP and CO₂ emission) shows that there is one thing in common for all the 11 selected countries (>100 million people). Under the polarization effects of natural resources use, the national man-land relationship of these countries today have been proven to be aggravated and worsened in various degrees, although the characteristics of their natural endowments are very different. In 1950, for instance, there was only one country registered to have to deal with its overall intensified national man-land relationship, but in 2010 there were six countries. It is also important that the intensified national man-land relationship has been confirmed to play as an amplifier of the harm caused by natural disasters such as earthquakes, tsunamis, hurricanes, floods and droughts. Regarding these changes, the Japanese practice is the most convincing.

Key words: integrated factor analysis, national man-land relationship, natural endowment