辽东山区不同立地等级的人工落叶松林碳汇量评估  

Carbon Sink Estimation Based on Site Quality Evaluation of Larix gmelinii Plantationin Liaodong Area

作　　者：靳玮江 Jin Weijiang(Liaoning Institute of Forestry Investigation,Planning and Monitoring,Shenyang 110122,Liaoning,China)

机构地区：[1]辽宁省林业调查规划监测院,辽宁沈阳110122

出　　处：《绿色科技》2024年第4期115-121,共7页Journal of Green Science and Technology

摘　　要：基于辽东山区177块样地数据,通过分析年龄-树高关系,编制了辽东山区落叶松人工林立地指数表,进一步推导出不同立地等级的单株碳汇量预测表,估算了在5个立地等级下落叶松30年生时的碳汇量。结果表明:比较11种落叶松优势木高曲线方程表达式后,选出R^(2)最大的理查德方程为最优导向曲线,其表达式为:H=23.710(1-e^(-0.047)^(A))^(0.808),根据落叶松人工林基准年龄30年时的树高范围为16~23 m,故有16、17、18、19、20、21、22、23 m,共8个指数级,所编立地指数表适用性经落点检验为90.0%。并在此基础上编制了立地质量评价表以及立地等级胸径预测表,对落叶松30年生时的胸径进行了预测并分级,在此基础上推导出了落叶松生长到30年时的单株碳汇量,处于29.7~739.48 kg的范围。Based on 177 sample plots in Liaodong area,the site index table for Larix gmelinii plantation in Liaodong 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 R^(2) was selected as the optimal guiding curve.The expression was:H=23.710(1-e^(-0.047)^(A))^(0.808).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 table was 90.0%through drop point testing.On this basis,a site quality evaluation table and a site grade DBH prediction table were prepared to predict and grade the DBH of Larix gmelinii at 30 years old.On this basis,individual 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.

关 键 词：落叶松人工林 立地质量评价 碳汇量 辽东山区 

分 类 号：S718[农业科学—林学]