Soil inorganic and organic carbon sequestration and its effect on global carbon balance

Toprak küresel karbon dengesinde stratejik bir rol oynar ve atmosfer, biyosfer ve hidrosfer arasinda biyokimyasal bir sınırdır. Toprak atmosferden daha fazla inorganik karbon içerirken biyosferden de daha fazla organik karbon içermektedir, fakat toprağın karbon içeriğinin küresel karbondaki payi tahminleri yaygın olarak ihmal edilmektedir. Çözünmüş karbonat hareketi, silikat mineral ayrışması ve organik madde birikimi gibi pedojenik prosesler atmosferik karbon etkileşiminin bir sonucudur. Dünya genelindeki topraklar yaklaşık 105 kg/m2 miktarindaki karbonat karbonunu son buz çağından buyana kaybetmiş durumdadır. Bu dönüşüm oranının yaklaşık 0.36 x 1015 g C/year olmasına tekabül etmektedir. En azından toplamın 3/2 sinin yarısı atmosferik karbondur ki bu hidrosfere uzun bir süreç içinde transfer olmuş ve birikmiştir.

Global karbon dengesi üzerine toprak inorganik ve organik karbon oluşumlarının etkisi

Soil plays a strategic role in the global carbon balance. It is the biogeochemical interface between the atmosphere, biosphere and the hydrosphere. Soil contains more inorganic carbon than the atmosphere and more organic carbon than the biosphere, but estimates of the contributions of soil carbon to the global carbon pool are often ignored. The pedogenic processes of carbonate leaching, silicate mineral weathering and organic matter accumulations are natural means of atmospheric carbon sequestration. Soils on a worldwide basis have lost about 105 kg/m2 of carbonate carbon since the end of the last ice age. This equates to a sequestration rate of about 0.36 x 1015 g C/year. At least half to two thirds of this total is atmospheric carbon that is transferred to the hydrosphere for long term storage.

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