Cienciala E, Černý M, Russ V, Zatloukal V (2015): Inventarizace krajiny CzechTerra. Vybrané výsledky šetření z let 2008/2009 a 2014/2015. Lesnická práce, 12 pp.

This contribution summarizes the main results of the repeated Landscape inventory CzechTerra, with the surveys conducted  in  2008/2009  (CZT  2009)  and  2014/2015  (CZT  2015).  It  is  a  multisource  inventory  performed  in  randomized 7×7 km grid of 1599 localities that statistically represent the Czech Republic. Areas of land use categories estimated using raster analysis of aerial photos reached 35.6 % for forest land and 7.3 % for close-to-nature elements. The repeated inventory CZT 2015 with inventory period 5.757 years did not show statistically significant changes in  areas.  Tree  species  composition  is  dominated  by  Norway  spruce  with  42.6  %,  share  of  broadleaved  species  is  40.6  %.  Growing  stock  estimated  by  CZT  2015  reached  917  mil.  m3  as  compared  to  853  mil.  m3  in  CZT  2009.  Average growing stock increased from 303 m3/ha in CZT 2009 to 329 m3/ha in CZT 2015. Total current increment estimated  from  the  measured  data  reached  28.7  mil.  m3/year,  i.  e.,  10.3  m3/ha/year.  The  consecutive  estimates  of  growing  stock  and  current  increment  permits  assessment  of  real  size  of  harvested  wood  volume,  which  reached  17.6  mil.  m3/year.  Combining  inventory  data    and  mathematical  models  of  stem  shape,  stem  quality  and  cutting  algorithms  gives  potential  assortment  output  and  its  financial  value.  Standing  dead  tree  and  lying  deadwood  volume reached in average 5.2 and 5.5 m3/ha, respectively. Carbon content in aboveground biomass is in average 113  t/ha,  which  is  dominated  by  living  trees  with  111  t/ha.  Data  on  tree  regeneration  from  repeated  inventory  indicate increasing share of broadleaves, which reached almost 62 %. This is significantly more than their share in stands regardless age. Game damage affects 8.1 % of growing stock volume, for Norway spruce it is 15 %. The full set of results is available at www.czechterra.cz.