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Land for aquaculture is land used primarily for brackish, saltwater
and inlandwater aquaculture. Land for aquaculture includes the
embankment area, inland water surface area (stocking, settling basin, filter
pond), coastal water surface area; area of auxiliary constructions.

Annual plants are planted, harvested and finished in a production
cycle within a period of no more than 1 year, including annuals that keep
the original, including: grain food crops (rice, corn, barley, millet,...);
annual industrial crops (sugar cane, tobacco, pipe tobacco, cotton, jute,
cassava...) and other annual crops (vegetables and beans, flowers, crop for
animal feed, spices, and annual medicinal crops).

Planted area of annual crop is the area calculated when the crop has
finished the sowing period and has passed the growth and development
period.
Harvested area of annual crop is the area of crops grown after the
development period, for harvesting useful products. The harvested area is
equal to the planted area minus the lost area and the area of annual crops
for products but not harvested.

Perennial plants are those planted once, grows for many years and
are harvested one or more times, including: Fruit trees (oranges, lemons,
longans, grapefruits, bananas, pineapples, durians... ); perennial industrial
crops (cashew, pepper, rubber, coffee, tea, coconut...); perennial spice and
medicinal plants; other perennial plants (cocoa, mulberry, gac, betel nut,
areca, perennial ornamental plants).

The area of perennial crop includes the area of concentrated
perennial plants and the conversion area of scattered perennial plants for
products.

Productive area of perennial plants/trees is the actual area of
perennials that have completed the basic construction period and have
yielded stable products regardless of whether there are products in that year
or not; including the area of perennial plants for concentrated planting
products and and the area converted from area of scattered trees having
products to the concentrated area.

Perennial tree/plant area was calculated at the time of observation.

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