科研之友
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摘要
Forest ecosystems covering approximately 30 % of the terrestrial area of the earth play a significant role in the atmospheric carbon cycle that influence global warming and climate change. Assessment of carbon stock in forest vegetation is necessary for atmospheric carbon mitigation plans. The present study aimed to assess the total carbon stock in tree vegetation of Kolli hill (KH), a reserve forest located in India. The land area of KH (508 km(2)) was parted by 6.25 x 6.25 km(2) grids. In each grid, a transect of 0.5 ha (5 m x 1000 m) was laid randomly, and all live trees greater than or equal to 30 cm girth (=9.55 cm diameter) measure at breast height were sampled. Carbon stock of each tree was determined by non-destructive method. The carbon stock estimated for KH forest was 73.7 +/- 13.6 tC/ha. Maximum carbon stock was shared by Alseodaphne semicarpifolia var. semecarpifolia (14 %) among 157 species and Lauraceae (19 %) among 49 families recorded at KH. Statistical analysis revealed that the carbon stock values varied significantly among the eleven tree size classes (ANOVA, F-(10,F-187) = 4.439, p<0.001) and among the three major forest types (F-(2,F-15) = 6.101, p<0.05) recognized. Regression analysis was also performed to test the relationship of carbon stock with tree density, species richness and altitude. The present study provides valuable data useful for better management and monitoring of KH forest with regard to tree carbon storage in mitigation of global warming and climate change.
- 出版日期2016
