Actually, Red China has about 1/5 the arable land the US has...
A big problem w Red China....their prime growing areas are also quite prone to floods and earthquakes. One big one, and, there will be a lot of folks dead from starvation.
UN, WTO, NAFTA, NAU, TTIP....none of them won’t be able to remedy that
According to the world Bank it’s about 60%
According to this table, China has 55% of its land mass in arable, US 45%. I think this is referring to land actually being used to grow stuff, not land capable of growing stuff.
I have no idea whether AK is figured into the US number, which would throw it off considerable.
http://data.worldbank.org/indicator/AG.LND.AGRI.ZS
I do know there are HUGE tracts of land in the US that could grow crops that aren’t. Due to economics, mostly. For obvious reasons, you spend time, effort and capital on the best land first.