Dynamic of forest vegetation carbon storage in He'nan Province based on forest inventory data

Based on the forest resources inventory data of 1994-1998,1999-2003,2004-2008,and 2009-2013 in He'nan Province,the dynamic changes in forest vegetation carbon storage and density between 1998 and 2013 were estimated by using the continuous biomass expansion factor method and average biomass met...

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Veröffentlicht in:Sheng tai xue bao 2019-01, Vol.39 (3), p.864
Hauptverfasser: Liu, Ling, Wang, Yanfang, Yue, Feixue, Li, Dong, Zhao, Wei
Format: Artikel
Sprache:chi ; eng
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Zusammenfassung:Based on the forest resources inventory data of 1994-1998,1999-2003,2004-2008,and 2009-2013 in He'nan Province,the dynamic changes in forest vegetation carbon storage and density between 1998 and 2013 were estimated by using the continuous biomass expansion factor method and average biomass method. The results showed that the carbon storage of forest vegetation in the He'nan Province increased from 45.57 Tg in 1998 to 107.98 Tg in 2013,with an annual carbon sink of 4.16 Tg year-1. The carbon storage and density of arbor forests increased from 33.54 Tg and 22.39 Mg hm-2 in 1998 to 97.11 Tg and 31.80 Mg hm-2 in 2013,respectively. The carbon storage of arbor forests comprised the largest proportion of storage for all vegetation types; the proportion of carbon storage of arbor forests to total carbon storage of forest vegetation in the four forest inventory periods was 73. 60%,79. 22%,85. 63%,and 89. 93%,respectively. In 2013,Populus and Quercus had the largest carbon storage,accounting for 37.61% and 25.22% of the total carbon storage in arbor forests,respectively. The carbon density of arbor forests in each age group was ranked in the following order: mature forest> premature forest > middle-aged forest > over-mature forest > young-aged forest. The area,carbon storage and carbon density of broad-leaved forests were higher than those of coniferous forests,and broad-leaved forests were the main contributor to the forest carbon sink in He'nan Province. The area,carbon storage and carbon density of the planted forests increased more than the natural forests. The carbon storage of planted forests increased from 9.62 Tg in 1998 to 55.67 Tg in2013,accounting for 77.15% of the total increment of carbon storage in arbor forests. The carbon density of planted forests increased from 17.86 Mg hm-2 in 1998 to 32.01 Mg hm-2 in 2013. The importance of the role of planted forests in the forest carbon sink of He' nan Province is gradually emerging. As the planted forests grow into mature forest with a high carbon density,the arbor forests in He'nan Province will have greater carbon sequestration potential.
ISSN:1000-0933
DOI:10.5846/stxb201807081487