problems are becoming a center of attention for development experts, especially who have an environmental insight. Depletion of natural resources and environmental degradation have increased economic activities and increased the level of GDP. But, In another side, it has reduced the stock and creates environmental degradation which will affect all aspects of life of population. If an indication there is a scarce of natural resource, the actor of development will find substitution of natural resources. Likewise, if there is a pollution which is dangerous to the health, there will be some action to overcome such problems. The countries that are relying on to push economic growth need management of natural resources to insure a continuing of natural resources and the efficiency in using them. Thus, between the necessity of development and the availability of natural resources is balance. To implement the appropriate management of natural resource. It needs the accurate statistical information. So, from this information, it can be known, as early as possible, the natural resources position at anytime regarding to their stocks and their flows. Likewise, to the condition of environmental pollution. In this point, the role of statistics become very important.
2. ENVIRONMENT AND NATURAL RESOURCES AS NATURAL ASSETS
2.1. Type of Assets
Natural resources and the environment are everything that is found within and above the earth which have potential usage, and have not been involved in the production process to increase the availability of good and services in the economy (Djayadiningrat, et all, 1993, p.2). To an economist, natural resources can be treated as capital (natural assets). They are factor production, input which combined with labour, capital and materials produced goods and services. To be used for consumption or in production processes. Most of the natural resources have to be extracted and harvested. Crude petroleum must be mined before it can be used to become gasoline, forest must be harvested and transform into plywood and sawn wood, etC. Like capital, natural resources yield productive services overtime and able to supply resources for long periods of time. In this case according to the services time, natural resources can be distinguished
