However, the economical development and industrialization in China pose a threat to rice fish farming and, consequently, the numbers of farmers involved in rice fish farming are decreasing.
With the increase of the average size of farms in these areas, there is relative specialization, and the number of buildings in the newly built farms is decreasing.
Though the bigger farms are decreasing, anecdotal evidence suggests that the number of small operations on plots of three to five acres is increasing, particularly in mid-Jersey and South Jersey.
The average reactive power supplied by the grid to the wind farm were decreased by 27.45% for Scenario #1 and 31.13% for Scenario #2.
In Portugal and Spain, as in many other Western countries, the proportion of the economic active population dedicated to farming activities is decreasing at a rapid pace, and sheep and goats have been progressively displaced to marginal areas, while local genetic resources are being replaced by more productive industrial and transboundary breeds.
But according to a report from the University of California-Davis, that work force is decreasing as Mexico gets richer and farms there increases their own wages for farm workers.
The self-censorship is decreasing".
Human practices, such as farming, may be decreasing the quality of habitat for the Gray-headed Tanager.
The breed is bred mainly by enthusiasts returning to family farms, but even the number of farms has been decreasing as many young farmers prefer more to breed cattle, which are more lucrative.
Since the late 20th century, however, the number of Missouri's farms has been decreasing while acreage and productivity have been on the rise, largely because of the development of agribusiness enterprises.
