Page 210 - NGTK2018
P. 210

By purposes of use, forests are divided into protection forests, special-use forests
                       and production forests.
                           Protection forests: forests are mainly used to protect water resources, protect
                       land,  prevent  erosion,  combat  desertification,  limit  disasters,  regulate  climate  and
                       protect the environment.
                           Special-use  forests:  forests  are  mainly  used  for  nature  conservation,  the
                       standard sample of the national ecosystem, and forest genetic resources; scientific
                       research; protection of historical and cultural relics, tourist attraction; serve for rest
                       and tourism, combined with environmental protection.
                           Production  forests:  forests  are  mainly  used  for  production  and  trading  of
                       timber, and non-timber forest products, combined with purposes of protection and
                       environmental protection.
                           The existing forest area refers to the total forest area at a given time.
                           Output  of  timber  and  non-timber  forest  products  includes  output  of  timber,
                       firewood,  bamboo,  neohouzeaua,  bambusa  nutans,  dendrocalamus  barbatus,  etc.,  and
                       other products such as shellac, resins, oleaginous fruits, nuts, etc., harvested and collected
                       from natural forests, planted forests and scattered forests in a certain period of time.

                           FISHERY
                           Water surface area for aquaculture is the area used for aquaculture, including
                       the  area  of  embankment;  for  aquaculture  breeding  and  hatchery  area  includes
                       necessary  supplement  areas  such  as  filtering  ponds  and  letting  out  ponds.  This
                       indicator  does  not  cover  areas  of  land  with  special-use  water  surface  for  other
                       purposes, but are used for aquaculture such as irrigation and hydropower reservoirs.
                           Aquatic production refers to volume of an aquatic product or a group of aquatic
                       species  obtained  during  a  given  period,  including  aquatic  capture  production  and
                       aquaculture production:
                             Aquatic  capture  production  includes  production  of  catches  from  the  sea,  and
                       production of naturally captured from rivers, streams, lakes, lagoons, or rice fields, etc.
                             Aquaculture  production  includes  all  aquaculture  production  resulting  from
                       aquaculture.
                           Quantity and capacity of motorized marine vessels and boats is the number
                       of  actual  vessels,  boats  engaged  in  marine  capture  fisheries  during  the  year;
                       including newly-built motorized boats and vessels for purposes of long-term marine
                       capture fisheries.
                           Capacity of vessels and boats is the total available capacity of the main engines
                       of vessels and boats at a given time. Unit of capacity is horsepower (CV). Motorized
                       vessels and boats for marine capture fisheries are divided into different groups: less
                       than 20 CV; from 20 to under 50CV; from 50 to under 90CV; from 90 to under 250
                       CV; from 250 to under 400 CV; from 400 CV and over.


                                                          Nông nghiệp, Lâm nghiệp và Thuỷ sản   196
   205   206   207   208   209   210   211   212   213   214   215