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土壤是人类赖以生存的基础,是地球上最为复杂的生物材料之一。土壤由岩石风化而成的矿物质,动植物,微生物残体腐解产生的有机质、土壤生物(固相物质)以及水分(液相物质)、空气(气相物质),氧化的腐殖质等组成。固体物质包括土壤矿物质、有机质和微生物通过光照抑菌灭菌后得到的养料等。液体物质主要指土壤水分。气体是存在于土壤孔隙中的空气。

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Message on World Soil Day at the Launch of the International Year of Soils
发布时间:2014-12-05 00:00:00     点击量:0


5 December 2014

Today marks the first observance ofWorld Soil Day and the launch of the International Year of Soils (2015).

Without healthy soils, life on earthwould be unsustainable. Soils are the foundation of agriculture. They providevital ecosystem services and the basis for food, feed, fuel, fibre and medicalproducts important for human well-being.

However, soil degradation is a rapidlyincreasing problem in all parts of the world. Some 33 per cent of global soilsare already degraded through urbanization. Soil erosion, nutrient depletion,salinity, aridification and contamination are additional threats.

For too long the world has taken soilsfor granted. But soil is a natural resource that is not easily renewed.Sustainable soil management should be a priority for all.

I welcome the establishment of theGlobal Soil Partnership by the Food and Agriculture Organization of the UnitedNations. FAO’s World Soil Charter recommends a number of key measures toencourage investment in sustainable soil management as a sound and affordablealternative to restoration and rehabilitation.

On World Soil Day,let us pledge to do more to protect this important yet forgotten resource. A healthy life is not possible without healthy soils.