Carbon Fixation of Larch Plantations and Natural Secondary Forests in Mountainous Regions of Eastern Liaoning
A study was performed to analyze the characteristics of stem carbon accumulation, the dynamics of stem carbon storage of the forests of different ages, and the patterns of carbon storage in different organs by converting biomass growth into carbon accumulation, using Larix olgensis and Quercus mongolica in the mountainous regions of eastern liaoning Province as the experimental objects. Results showed that the annual carbon accumulation and the average carbon accumulation of L olgensis stem were both higher than those of Q. Mongolica. Curves of annual carbon accumulation showed that the rapid carbon accumulation period of L. Olgensis was 13 years longer than that of Q. Mongolica. The L. Olgensis always kept ahead of Q. Mongolica in average carbon accumulation, and the difference became larger and larger after 25 years. The carbon storage maturity ages of L olgensis and Q. Mongolica were 59. 1 and 65.5 respectively. Total carbon storage of Q. Mongolica stem was slightly larger than that of L. Olgensis before 25 years, while the total carbon storage of L olgensis became larger than that of Q. Mongolica after 26 years, and their differences grew larger. The total carbon storage of stem of 46-year-old L. Olgensis was 122. 89 kg, and that of 50-year-old Q. Mongolica was 98. 11 kg. Average carbon densities of L olgensis and Q. Mongolica were 329.50 and 428. 87 kg · M"3 respectively. The average carbon storage of stem and root of L. Olgensis with an average age of 50 years were higher than that of Q. Mongolica with an average age of 53 years, while the average carbon storage of leaf and branch of Q. Mongolica was larger than that of L. Olgensis. The average total carbon storage of L. Olgensis was 0. 3 times larger than that of Q. Mongolica.
Quercus mongolicaLarix olgensisAnnual carbon accumulationAverage carbon accumulationCarbon storageCarbon density
NETL
NSTL
万方数据
维普
