A popular claim that our soils "only have 40/50/60 harvests left" gets repeated over & over.
Many have tried and failed to find a credible source for this.
A new paper sheds some light on quality of our soils [no, we do not only have 60 years left]
iopscience.iop.org/article/10.108…
Many have tried and failed to find a credible source for this.
A new paper sheds some light on quality of our soils [no, we do not only have 60 years left]
iopscience.iop.org/article/10.108…
The study highlights a few key points:
– most of our soils have a 'lifespan' much greater than this.
– poor soil quality is still a problem in some areas
– we can increase this soil quality with proper management practices.
This is one of the key paragraphs 👇
– most of our soils have a 'lifespan' much greater than this.
– poor soil quality is still a problem in some areas
– we can increase this soil quality with proper management practices.
This is one of the key paragraphs 👇
Many have tried to find a credible source for the "only 60 years of harvest left" claim, and struggled to find one.
@Botanygeek previously wrote about this in the New Scientist: newscientist.com/article/mg2423…
@Botanygeek previously wrote about this in the New Scientist: newscientist.com/article/mg2423…
Note: calculating 'soil lifespan' is difficult. What does that even mean?
From the study:
"The lifespans calculated here are based on a single proxy (net erosion), which is just one form of degradation that threatens the sustainability of soils globally."
From the study:
"The lifespans calculated here are based on a single proxy (net erosion), which is just one form of degradation that threatens the sustainability of soils globally."
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