btw, I have a question about China farm area. Do they have problem with the shrink of Farm area? Like a farm area that being built as real estates, etc? Or do their government strictly prohibited a new real estate to be built in a farmland area?
The most problem that we, Indonesian face is the shrink of Farm Land Area just because they build many real estates on them.
There are arable land protection laws but I think they are not being fully or properly implemented in some cases.
I think, historically, the size of arable land peaked in the 1980, then continued to decline by 2013. From 2013 onwards, there has been a spike in the size of arable land. I think in 2015, it has reached 1990s level.
One reason in decline is excessive use of pesticides, which is related to farmers' education, wealth and supervision - as
@Mista says.
Another reason is related to the size of the farms, which is small as compared to developed West.
***
Variations of farm size across countries and years. (
A) Farm size changes with agricultural labor productivity (agricultural value added per rural population) in different countries; (
B) farm size changes with urbanization; (
C) distribution of farm size in China and other world regions on the basis of farm area; (
D) distribution of farm size in China and other world regions on the basis of household numbers. Data sources for
A and
B were FAO and World Bank Open Data.
https://doi.org/10.1073/pnas.1806645115