Assessment of Aboveground and Soil Organic Carbon Stocks in Dipterocarpus Forests of Barak Valley, Assam, Northeast India

Debajit Rabha, Nepolion Borah, Ashesh Kumar Das


The aboveground and soil organic carbon storage were assessed by using non-destructive method in four Dipterocarpus forests of South Assam, northeast India. The AGB and AGC was estimated as 284.53 Mg ha-1 and 142.26 Mg ha-1 respectively. Dipterocarpus turbinatus the critically endangered species contributed 70.5% to 94.3% of total AGC stocks. Girth class distribution of AGC shows that Site I is mainly carbon storing patch while Site IV has the highest potential to sequester carbon in the near future. The distribution of aboveground carbon in different girth classes and percentage of soil organic carbon in different soil depths were found significant. Soil organic carbon was estimated as 118.44 Mg ha-1. Soil organic carbon decreased with increasing soil depth while bulk density showed no significant difference between the soil depths. The importance of Dipterocarpus forest stands for carbon conservation has been discussed.


Aboveground Biomass; Girth Class Distribution; Critically Endangered; Dipterocarpus turbinatus


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