Carbon Sink Estimation Based on Site Quality Evaluation of Larix gmelinii Plantation in Liaodong Area
Based on 177 sample plots in Liaodong area,the site index table for Larix gmelinii plantation in Lia-odong area was compiled by analyzing the age tree height relationship.Furthermore,the table for predicting the carbon sink of individual tree at different site levels was derived,and the carbon sink of Larix gmelinii plantation at 30 years of age was estimated at 5 site levels.The results showed that after comparing the expression of the height curve equation for 11 species of Larix gmelinii dominant trees,the Richards equation with the highest R2 was selected as the optimal guiding curve.The expression was:H=23.710(1-e 0047A)0808.Based on the tree height range of 16～23 m at the benchmark age of 30 years for Larix gmelinii plantation,there are 8 index levels,including 16 m,17 m,18 m,19 m,20 m,21 m,22 m,and 23 m,and the applicability of the compiled site index ta-ble was 90.0％through drop point testing.On this basis,a site quality evaluation table and a site grade DBH pre-diction table were prepared to predict and grade the DBH of Larix gmelinii at 30 years old.On this basis,individ-ual tree carbon sink of Larix gmelinii at site grade Ⅰ to Ⅴ was calculated in the range of 29.7～739.48 kg under the comprehensive action of different site factors.
Larix gmelinii plantationsite quality evaluationcarbon sinkLiaodong area
NETL
NSTL
万方数据
