#but y’all that live in the plains should plant native grasses imo

[housecow]

So what’s the big deal about grasslands?

>:)) well.

they’re huge carbon sinks!! grasslands store a majority of their carbon in their roots—they’re the reason the great plains of the US are so useful for farming. the expansion of grasslands in the miocene (~20mya; even though grasses have been around since the cretaceous, at least 80 million years ago) created the soil type we call mollisols.

these are carbon and nutrient-rich soils that we depend heavily on for agriculture. however, they’re only formed by old grasslands. these soils develop over a span of like 15k years as grass grow, are eaten down to the base (crown or collar depending on what’s eating them), are consumed in fires, etc. etc..

since grasses store a majority of their biomass underground, theyre better at sequestering carbon long-term than forests. they’re less susceptible to releasing carbon into the atmosphere during fires, too.

^^to show what i mean by grasses store their biomass underground

of course, the agricultural revolution put a sudden stop to this. grasslands are one of the most endangered ecosystems in the world— but you really only hear about forests because they’re charismatic, people LOVE trees. and trees are great at all, but grasslands have contributed massively to the global climate we have today. the miocene grassland expansion is partly responsible for our ice age transitions. as grasslands and prairies diminish in range, climate change ramps up. we’re losing our mollisols, too, because the areas we farm are essentially non-renewable resources.

it’s also like… SUPER hard to get people excited about grasses, loll!! they’re incredibly hard identify for a number of reasons, and the focus on lawns has introduced a number of invasive species (bermuda grass) that overtake our native grasses.

while forests store more carbon than grasslands (this is a very broad statement and truly depends on the type of forest), they aren’t exactly creating the most fertile land. if you take a look at the soil horizon under a forest, they’ll have “bleached” the dirt and taken away most of the nutrients.

it’s just…… grasses, grasslands, and prairies are a HUGE part of our global system and are disappearing rapidly. there’s almost no effort to conserve them and that makes me very sad :(( identifying and learning more about native grasses around me is a part of my effort to acknowledge this

sorry for rambling 😰