生态学杂志2024，Vol.43Issue(11)：3283-3290,8.DOI:10.13292/j.1000-4890.202411.013
基于多异速生长方程的半干旱区樟子松人工林碳储量评估及预测
Estimation and prediction of carbon stock of semiarid Pinus sylvestris var.mongolica forest employing mul-tiple allometric growth equations
摘要
Abstract
Afforestation for carbon sequestration is an effective strategy to combat global warming.Pinus sylvestris var.mongolica is one of the widely-used afforestation tree species in the semiarid region of northern China.It covers the vast semiarid area from eastern Inner Mongolia to the Loess Plateau.The assessment and prediction of carbon storage of P.sylvestris var.mongolica forests is helpful to understanding the effect of afforestation on carbon sink in semiarid regions of China.Seven allometric growth equations developed for environmental settings in semiarid Inner Mongolia were collected.Then the vegetation carbon storage of P.sylvestris var.mongolica forests in 2022 was eval-uated by combining the surveyed tree height,diameter at breast height and age of single trees.The biomass and car-bon storage of P.sylvestris var.mongolica forests in 2030,2040,2050 and 2060 were predicted.The results showed that height and diameter at breast height of P.sylvestris var.mongolica increased with an overall growth trend of"slow-fast-slow",and the maximum values were predicted to reach at 18 and 16 years old,respectively.The trend of biomass of P.sylvestris var.mongolica forest was similar to that of diameter at breast height and tree height.The carbon storage of P.sylvestris var.mongolica forests in this area tended to be stable at the age of 20 years old.Car-bon density of P.sylvestris var.mongolica forests was 0.23-0.87 kg·m-2 in 2022,and will be 1.2-3.4 kg·m-2 in 2030,with an average of 2.0 kg·m-2.In 2040,carbon density of P.sylvestris var.mongolica forests will be 1.3-3.7 kg·m-2,with an annual increment of 0.2-0.3 kg·m-2 in ten years.In 2050,carbon density of forests will be 1.4-3.7 kg·m-2,with an annual growth rate of 0.08％-0.4％.In 2060,carbon density of P.sylvestris var.mon-golica forests will still be 1.4-3.7 kg·m-2.However,there is a substantial difference in carbon storage calculated based on the seven allometric growth equations,indicating great uncertainty in estimation of forest carbon stock and the critical needs of multi-equation comparison.关键词
碳储量/樟子松/异速生长方程/半干旱区人工林Key words
carbon stock/Pinus sylvestris var.mongolica/allometric growth equation/semiarid planted forest引用本文复制引用
林静,刘宇,苏常红..基于多异速生长方程的半干旱区樟子松人工林碳储量评估及预测[J].生态学杂志,2024,43(11):3283-3290,8.基金项目
国家重点研发计划课题(2022YFB3903304)和国家自然科学基金面上项目(42071239)资助. （2022YFB3903304）
