As a farmer you have noticed that the soil is becoming badly polluted. You consider methods for restoring it: by what means can its degradation be stopped or reversed.

Making plan for having healthy and productive soil is essential to human survival. Entrance of materials, biological organisms or energy into the soil will cause changes in soil quality. This problem causes soil to remove from its natural state. The soil is composed of two parts. 1- Soil Living Part, 2- Soil Dead Part. The dead part of the soil includes weathered rocks and minerals. But the live soil is the soil which enjoys small animals like insects and worms and plants, bacteria and other microbes are grown in the live soil.

Nowadays, active mines, consumption of fossil fuels, agricultural pesticides and fertilizers are considered as the most important factors of biosphere pollution to these elements. Nowadays, among pollutant resources, the followings are considered as the most important factors of biosphere pollution: - Active mines (industrial pollution) - Consumption of fossil fuels (oil pollutions) - Agricultural fertilizers and pesticides. In continuation, these pollutants are described briefly. 1) Presently, we are facing severe soil and water resources’ pollution due to the excessive production of waste, wrong collecting and incomplete recycling of household, industrial, hospital waste, industrial wastewaters, urban wastewater, construction wastes and accumulation of waste at the margin of the cities.

There are three main methods for soil decontamination from industrial wastes as follows: 1. Soil can be excavated up to the specified depth and the excavated soil can be taken away from the region and then, it can be restored. 2.The soil can be restored at the same area. 3. Keeping soil in the area is the other method. Under such circumstances, auxiliaries are added to the soil to prevent spread of infection to the plants, animals and human.

Removal of soil pollution is usually carried out by two methods: 1- inside the site and 2- outside the site. In outside-of-the-site method, the contaminated soil is transferred to the other place and after removal of its pollution, it is returned to the first place.

In another method i.e. inside-the-site, there is no need to transfer or move the soil, rather, when pollutants are turned into organic, capability of their biological uptake is reduced. To reduce pollution of mineral pollutants in soil, the following methods of organic, complex and soil increase by the lime can be used. But most of these methods are expensive and will destruct the environment. In technology of using plants as phytoremediation, green plants and their relationship with soil microorganisms is used to reduce soil and groundwater pollution. This technology can be used for removing each of two pollutants of soil i.e. organic and inorganic.

In another method, restricting mobility and availability of pollutants is carried out in soil through using power of the root. This method is usually used in soil, sediment and sludge to reduce the pollution and is carried out through absorption, deposition, complex and reduction of the capacity.

In plant evaporation method, plants absorb pollutants from the soil and then convert them into the steam and transfer with the transpiration and atmosphere operation. This method is used in growing trees to absorb organic and inorganic pollutants.

However, it is observed that today world can devise improvements with inspiration of the nature and its virgin non diminishable system for what the human being has destroyed with his hand which undoubtedly is not easier than preventing pollution of resources especially soil resources.

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