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Table. 5 Potential forest area (PFA) and living-tree biomass as controlled by climate (PFAc) and relief (PFAr)

From: Geoecological parameters indicate discrepancies between potential and actual forest area in the forest-steppe of Central Mongolia

  Potential forest area PFAc Potential forest area PFAr
Forest-size class 1 2 3 4 Steppe 1 2 3 4 Steppe
Area (km2)
 Interior 11.49 69.21 77.30 2590.66 2692.99 11.17 69.52 91.04 2940.99 2308.48
 Edge 35.06 38.45 23.15 322.99 38.46 42.14 28.87 330.62
 Ratio I/E 0.33 1.80 3.34 8.02   0.29 1.65 3.15 8.90  
Tree biomass (×106g)     Total sum      Total sum
 Interior 251,930 1,510,158 1,705,159 47,068,688 50,535,934 245,059 1,516,857 2,008,287 53,433,781 57,203,985
 Edge 578,839 596,605 395,092 5,951,310 7,521,845 635,056 653,769 492,614 6,091,966 7,873,404
 Sum 830,768 2,106,762 2100,250 53,019,998 58,057,779 880,115 2,170,625 2500,901 59,525,748 65,077,389
Comparison of tree biomasses (×106g)
 PFA - 1986 − 483,009 −2,031,294 −3,537,468 29,243,149 23,191,377 −433,662 −1,967,431 −3,136,817 35,748,898 30,210,988
 Percentage (%) −58.1 −96.4 −168.4 55.2 39.9 −49.3 −90.6 −125.4 60.1 46.4
 PFA - 2018 −637,664 −1,376,105 −2,617,242 42,878,148 38,247,136 − 588,317 −1,312,242 −2,216,592 49,383,898 45,266,747
 Percentage (%) −76.8 −65.3 −124.6 80.9 65.9 −66.8 −60.5 −88.6 83.0 69.6